diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5592b2bdef..4d7ca6a98e 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +1,4 @@
-# Contributing to FAIR Sequence-to-Sequence Toolkit (PyTorch)
+# Contributing to Facebook AI Research Sequence-to-Sequence Toolkit (fairseq)
 We want to make contributing to this project as easy and transparent as
 possible.
 
@@ -22,9 +22,7 @@ Complete your CLA here: <https://code.facebook.com/cla>
 We use GitHub issues to track public bugs. Please ensure your description is
 clear and has sufficient instructions to be able to reproduce the issue.
 
-## Coding Style
-We try to follow the PEP style guidelines and encourage you to as well.
-
 ## License
-By contributing to FAIR Sequence-to-Sequence Toolkit, you agree that your contributions will be licensed
-under the LICENSE file in the root directory of this source tree.
\ No newline at end of file
+By contributing to Facebook AI Research Sequence-to-Sequence Toolkit (fairseq),
+you agree that your contributions will be licensed under the LICENSE file in
+the root directory of this source tree.
diff --git a/LICENSE b/LICENSE
index 8144372d12..b96dcb0480 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,30 +1,21 @@
-BSD License
+MIT License
 
-For fairseq software
+Copyright (c) Facebook, Inc. and its affiliates.
 
-Copyright (c) 2017-present, Facebook, Inc. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
- * Redistributions of source code must retain the above copyright notice, this
-    list of conditions and the following disclaimer.
-
- * Redistributions in binary form must reproduce the above copyright notice,
-    this list of conditions and the following disclaimer in the documentation
-       and/or other materials provided with the distribution.
-
- * Neither the name Facebook nor the names of its contributors may be used to
-    endorse or promote products derived from this software without specific
-       prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/PATENTS b/PATENTS
deleted file mode 100644
index 18b09892ca..0000000000
--- a/PATENTS
+++ /dev/null
@@ -1,33 +0,0 @@
-Additional Grant of Patent Rights Version 2
-
-"Software" means the fairseq software distributed by Facebook, Inc.
-
-Facebook, Inc. ("Facebook") hereby grants to each recipient of the Software
-("you") a perpetual, worldwide, royalty-free, non-exclusive, irrevocable
-(subject to the termination provision below) license under any Necessary
-Claims, to make, have made, use, sell, offer to sell, import, and otherwise
-transfer the Software. For avoidance of doubt, no license is granted under
-Facebook’s rights in any patent claims that are infringed by (i) modifications
-to the Software made by you or any third party or (ii) the Software in
-combination with any software or other technology.
-
-The license granted hereunder will terminate, automatically and without notice,
-if you (or any of your subsidiaries, corporate affiliates or agents) initiate
-directly or indirectly, or take a direct financial interest in, any Patent
-Assertion: (i) against Facebook or any of its subsidiaries or corporate
-affiliates, (ii) against any party if such Patent Assertion arises in whole or
-in part from any software, technology, product or service of Facebook or any of
-its subsidiaries or corporate affiliates, or (iii) against any party relating
-to the Software. Notwithstanding the foregoing, if Facebook or any of its
-subsidiaries or corporate affiliates files a lawsuit alleging patent
-infringement against you in the first instance, and you respond by filing a
-patent infringement counterclaim in that lawsuit against that party that is
-unrelated to the Software, the license granted hereunder will not terminate
-under section (i) of this paragraph due to such counterclaim.
-
-A "Necessary Claim" is a claim of a patent owned by Facebook that is
-necessarily infringed by the Software standing alone.
-
-A "Patent Assertion" is any lawsuit or other action alleging direct, indirect,
-or contributory infringement or inducement to infringe any patent, including a
-cross-claim or counterclaim.
diff --git a/README.md b/README.md
index 0b5f9ea947..a748599895 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ modeling and other text generation tasks.
 
 ### What's New:
 
+- July 2019: fairseq relicensed under MIT license
 - July 2019: [RoBERTa models and code release](examples/roberta/README.md)
 - June 2019: [wav2vec models and code release](examples/wav2vec/README.md)
 - April 2019: [fairseq demo paper @ NAACL 2019](https://arxiv.org/abs/1904.01038)
@@ -109,9 +110,8 @@ We also have more detailed READMEs to reproduce results from specific papers:
 * Google group: https://groups.google.com/forum/#!forum/fairseq-users
 
 # License
-fairseq(-py) is BSD-licensed.
+fairseq(-py) is MIT-licensed.
 The license applies to the pre-trained models as well.
-We also provide an additional patent grant.
 
 # Citation
 
diff --git a/eval_lm.py b/eval_lm.py
index 34c9a5485d..e2da64fc1d 100644
--- a/eval_lm.py
+++ b/eval_lm.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3 -u
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 """
 Evaluate the perplexity of a trained language model.
diff --git a/examples/roberta/preprocess_GLUE_tasks.sh b/examples/roberta/preprocess_GLUE_tasks.sh
index 33fcd8f4f5..56addbc292 100755
--- a/examples/roberta/preprocess_GLUE_tasks.sh
+++ b/examples/roberta/preprocess_GLUE_tasks.sh
@@ -1,10 +1,8 @@
 #!/bin/bash
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 # raw glue data as downloaded by glue download script (https://gist.github.com/W4ngatang/60c2bdb54d156a41194446737ce03e2e)
diff --git a/examples/translation_moe/score.py b/examples/translation_moe/score.py
index f59fac0846..8e207093db 100644
--- a/examples/translation_moe/score.py
+++ b/examples/translation_moe/score.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Scoring script for computing pairwise BLEU and multi-ref BLEU over a set of
 candidate hypotheses.
diff --git a/fairseq/__init__.py b/fairseq/__init__.py
index 90ddc77812..1699f2bfca 100644
--- a/fairseq/__init__.py
+++ b/fairseq/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 __all__ = ['pdb']
 __version__ = '0.7.2'
diff --git a/fairseq/binarizer.py b/fairseq/binarizer.py
index 5130c4e12a..44dcb256c4 100644
--- a/fairseq/binarizer.py
+++ b/fairseq/binarizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import Counter
 import os
diff --git a/fairseq/bleu.py b/fairseq/bleu.py
index d46abd340f..36b15286fc 100644
--- a/fairseq/bleu.py
+++ b/fairseq/bleu.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import ctypes
 import math
diff --git a/fairseq/checkpoint_utils.py b/fairseq/checkpoint_utils.py
index 3e2fcbda7c..859f65351a 100644
--- a/fairseq/checkpoint_utils.py
+++ b/fairseq/checkpoint_utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 from collections import OrderedDict
diff --git a/fairseq/criterions/__init__.py b/fairseq/criterions/__init__.py
index 343ba0dc2d..618723aeff 100644
--- a/fairseq/criterions/__init__.py
+++ b/fairseq/criterions/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import importlib
 import os
diff --git a/fairseq/criterions/adaptive_loss.py b/fairseq/criterions/adaptive_loss.py
index 8982bd2b7d..6f282001c0 100644
--- a/fairseq/criterions/adaptive_loss.py
+++ b/fairseq/criterions/adaptive_loss.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import math
diff --git a/fairseq/criterions/binary_cross_entropy.py b/fairseq/criterions/binary_cross_entropy.py
index 06f269692c..d1f758f511 100644
--- a/fairseq/criterions/binary_cross_entropy.py
+++ b/fairseq/criterions/binary_cross_entropy.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import torch
diff --git a/fairseq/criterions/composite_loss.py b/fairseq/criterions/composite_loss.py
index 8b36434684..a638d268c7 100644
--- a/fairseq/criterions/composite_loss.py
+++ b/fairseq/criterions/composite_loss.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from torch import nn
 
diff --git a/fairseq/criterions/cross_entropy.py b/fairseq/criterions/cross_entropy.py
index fda539df6b..d6e8ff545f 100644
--- a/fairseq/criterions/cross_entropy.py
+++ b/fairseq/criterions/cross_entropy.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import torch.nn.functional as F
diff --git a/fairseq/criterions/fairseq_criterion.py b/fairseq/criterions/fairseq_criterion.py
index 4c167ac511..2df0819183 100644
--- a/fairseq/criterions/fairseq_criterion.py
+++ b/fairseq/criterions/fairseq_criterion.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from torch.nn.modules.loss import _Loss
 
diff --git a/fairseq/criterions/label_smoothed_cross_entropy.py b/fairseq/criterions/label_smoothed_cross_entropy.py
index 71448bf10b..6687718725 100644
--- a/fairseq/criterions/label_smoothed_cross_entropy.py
+++ b/fairseq/criterions/label_smoothed_cross_entropy.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/criterions/legacy_masked_lm.py b/fairseq/criterions/legacy_masked_lm.py
index ac7fb9d445..fe3c7bf2a6 100644
--- a/fairseq/criterions/legacy_masked_lm.py
+++ b/fairseq/criterions/legacy_masked_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import math
diff --git a/fairseq/criterions/masked_lm.py b/fairseq/criterions/masked_lm.py
index b899b87605..842fad0fa5 100644
--- a/fairseq/criterions/masked_lm.py
+++ b/fairseq/criterions/masked_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/criterions/sentence_prediction.py b/fairseq/criterions/sentence_prediction.py
index 9b4a2d1815..f116288b12 100644
--- a/fairseq/criterions/sentence_prediction.py
+++ b/fairseq/criterions/sentence_prediction.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/data/__init__.py b/fairseq/data/__init__.py
index 14e9770ae9..d400a9b034 100644
--- a/fairseq/data/__init__.py
+++ b/fairseq/data/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from .dictionary import Dictionary, TruncatedDictionary
 
diff --git a/fairseq/data/audio/raw_audio_dataset.py b/fairseq/data/audio/raw_audio_dataset.py
index 7fb25cc6c3..59bee89066 100644
--- a/fairseq/data/audio/raw_audio_dataset.py
+++ b/fairseq/data/audio/raw_audio_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import os
diff --git a/fairseq/data/backtranslation_dataset.py b/fairseq/data/backtranslation_dataset.py
index 9e0689e5e9..0007a01506 100644
--- a/fairseq/data/backtranslation_dataset.py
+++ b/fairseq/data/backtranslation_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/data/base_wrapper_dataset.py b/fairseq/data/base_wrapper_dataset.py
index 88609915c4..17b39133dc 100644
--- a/fairseq/data/base_wrapper_dataset.py
+++ b/fairseq/data/base_wrapper_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from torch.utils.data.dataloader import default_collate
 
diff --git a/fairseq/data/concat_dataset.py b/fairseq/data/concat_dataset.py
index 1a930b9334..659af9ae75 100644
--- a/fairseq/data/concat_dataset.py
+++ b/fairseq/data/concat_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import bisect
 
diff --git a/fairseq/data/concat_sentences_dataset.py b/fairseq/data/concat_sentences_dataset.py
index 342018f096..8a9336d360 100644
--- a/fairseq/data/concat_sentences_dataset.py
+++ b/fairseq/data/concat_sentences_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/data/data_utils.py b/fairseq/data/data_utils.py
index 71b450aabc..bd2c5d35c9 100644
--- a/fairseq/data/data_utils.py
+++ b/fairseq/data/data_utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 try:
     from collections.abc import Iterable
diff --git a/fairseq/data/dictionary.py b/fairseq/data/dictionary.py
index 4e4cbc0346..417105e50b 100644
--- a/fairseq/data/dictionary.py
+++ b/fairseq/data/dictionary.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import Counter
 from multiprocessing import Pool
diff --git a/fairseq/data/encoders/__init__.py b/fairseq/data/encoders/__init__.py
index 1e7e69fbea..c0909b6697 100644
--- a/fairseq/data/encoders/__init__.py
+++ b/fairseq/data/encoders/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import importlib
diff --git a/fairseq/data/encoders/gpt2_bpe.py b/fairseq/data/encoders/gpt2_bpe.py
index 283e6c4501..04a485add2 100644
--- a/fairseq/data/encoders/gpt2_bpe.py
+++ b/fairseq/data/encoders/gpt2_bpe.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import file_utils
 from fairseq.data.encoders import register_bpe
diff --git a/fairseq/data/encoders/moses_tokenizer.py b/fairseq/data/encoders/moses_tokenizer.py
index 4964a822c2..deed30d880 100644
--- a/fairseq/data/encoders/moses_tokenizer.py
+++ b/fairseq/data/encoders/moses_tokenizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.data.encoders import register_tokenizer
 
diff --git a/fairseq/data/encoders/nltk_tokenizer.py b/fairseq/data/encoders/nltk_tokenizer.py
index 61325efc42..3db8ee5652 100644
--- a/fairseq/data/encoders/nltk_tokenizer.py
+++ b/fairseq/data/encoders/nltk_tokenizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.data.encoders import register_tokenizer
 
diff --git a/fairseq/data/encoders/sentencepiece_bpe.py b/fairseq/data/encoders/sentencepiece_bpe.py
index 9b27460194..ecfe865c56 100644
--- a/fairseq/data/encoders/sentencepiece_bpe.py
+++ b/fairseq/data/encoders/sentencepiece_bpe.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import file_utils
 from fairseq.data.encoders import register_bpe
diff --git a/fairseq/data/encoders/space_tokenizer.py b/fairseq/data/encoders/space_tokenizer.py
index b804b969d8..670001a8e8 100644
--- a/fairseq/data/encoders/space_tokenizer.py
+++ b/fairseq/data/encoders/space_tokenizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import re
 
diff --git a/fairseq/data/encoders/subword_nmt_bpe.py b/fairseq/data/encoders/subword_nmt_bpe.py
index b2c1fa33b9..78f19b43ea 100644
--- a/fairseq/data/encoders/subword_nmt_bpe.py
+++ b/fairseq/data/encoders/subword_nmt_bpe.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import file_utils
 from fairseq.data.encoders import register_bpe
diff --git a/fairseq/data/fairseq_dataset.py b/fairseq/data/fairseq_dataset.py
index 55ffec30d0..f710b3d9f7 100644
--- a/fairseq/data/fairseq_dataset.py
+++ b/fairseq/data/fairseq_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch.utils.data
diff --git a/fairseq/data/id_dataset.py b/fairseq/data/id_dataset.py
index a10423e1af..6a73ba1ff7 100644
--- a/fairseq/data/id_dataset.py
+++ b/fairseq/data/id_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/data/indexed_dataset.py b/fairseq/data/indexed_dataset.py
index 7939a5a62d..12497989bb 100644
--- a/fairseq/data/indexed_dataset.py
+++ b/fairseq/data/indexed_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from functools import lru_cache
 import os
diff --git a/fairseq/data/iterators.py b/fairseq/data/iterators.py
index 313d546b83..451a8c5e1d 100644
--- a/fairseq/data/iterators.py
+++ b/fairseq/data/iterators.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import math
diff --git a/fairseq/data/language_pair_dataset.py b/fairseq/data/language_pair_dataset.py
index 64a5e4c7ee..5fc1371aae 100644
--- a/fairseq/data/language_pair_dataset.py
+++ b/fairseq/data/language_pair_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch
diff --git a/fairseq/data/legacy/__init__.py b/fairseq/data/legacy/__init__.py
index df912ec648..1acaafeb09 100644
--- a/fairseq/data/legacy/__init__.py
+++ b/fairseq/data/legacy/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from .masked_lm_dictionary import BertDictionary, MaskedLMDictionary
 from .block_pair_dataset import BlockPairDataset
diff --git a/fairseq/data/legacy/block_pair_dataset.py b/fairseq/data/legacy/block_pair_dataset.py
index db13f61c97..b9fc814147 100644
--- a/fairseq/data/legacy/block_pair_dataset.py
+++ b/fairseq/data/legacy/block_pair_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/data/legacy/masked_lm_dataset.py b/fairseq/data/legacy/masked_lm_dataset.py
index 864c5dcb67..953aa85dd4 100644
--- a/fairseq/data/legacy/masked_lm_dataset.py
+++ b/fairseq/data/legacy/masked_lm_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/data/legacy/masked_lm_dictionary.py b/fairseq/data/legacy/masked_lm_dictionary.py
index ef31373be3..254b0eb740 100644
--- a/fairseq/data/legacy/masked_lm_dictionary.py
+++ b/fairseq/data/legacy/masked_lm_dictionary.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.data import Dictionary
 
diff --git a/fairseq/data/lm_context_window_dataset.py b/fairseq/data/lm_context_window_dataset.py
index c3ff5a0deb..17ba08bc7f 100644
--- a/fairseq/data/lm_context_window_dataset.py
+++ b/fairseq/data/lm_context_window_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch
diff --git a/fairseq/data/lru_cache_dataset.py b/fairseq/data/lru_cache_dataset.py
index cea71731cc..833a2c75cb 100644
--- a/fairseq/data/lru_cache_dataset.py
+++ b/fairseq/data/lru_cache_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from functools import lru_cache
 
diff --git a/fairseq/data/mask_tokens_dataset.py b/fairseq/data/mask_tokens_dataset.py
index ecbf29d294..b73da6b0ca 100644
--- a/fairseq/data/mask_tokens_dataset.py
+++ b/fairseq/data/mask_tokens_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from functools import lru_cache
 
diff --git a/fairseq/data/monolingual_dataset.py b/fairseq/data/monolingual_dataset.py
index 4d41171aed..76c3772374 100644
--- a/fairseq/data/monolingual_dataset.py
+++ b/fairseq/data/monolingual_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch
diff --git a/fairseq/data/multi_corpus_sampled_dataset.py b/fairseq/data/multi_corpus_sampled_dataset.py
index ef7e1b794c..4d32d00fda 100644
--- a/fairseq/data/multi_corpus_sampled_dataset.py
+++ b/fairseq/data/multi_corpus_sampled_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 from typing import Callable, Dict, List
diff --git a/fairseq/data/nested_dictionary_dataset.py b/fairseq/data/nested_dictionary_dataset.py
index 385bf2324b..2795f895dd 100644
--- a/fairseq/data/nested_dictionary_dataset.py
+++ b/fairseq/data/nested_dictionary_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 
diff --git a/fairseq/data/noising.py b/fairseq/data/noising.py
index 0fe6597a82..bd67e7336c 100644
--- a/fairseq/data/noising.py
+++ b/fairseq/data/noising.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import numpy as np
diff --git a/fairseq/data/num_samples_dataset.py b/fairseq/data/num_samples_dataset.py
index 1ad2ce8290..9d7ea44019 100644
--- a/fairseq/data/num_samples_dataset.py
+++ b/fairseq/data/num_samples_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import FairseqDataset
 
diff --git a/fairseq/data/numel_dataset.py b/fairseq/data/numel_dataset.py
index efcd8f152c..50087e5857 100644
--- a/fairseq/data/numel_dataset.py
+++ b/fairseq/data/numel_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch
diff --git a/fairseq/data/offset_tokens_dataset.py b/fairseq/data/offset_tokens_dataset.py
index 7a947f66ed..a6fd559a30 100644
--- a/fairseq/data/offset_tokens_dataset.py
+++ b/fairseq/data/offset_tokens_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import BaseWrapperDataset
 
diff --git a/fairseq/data/pad_dataset.py b/fairseq/data/pad_dataset.py
index 28c372c134..4c13b549aa 100644
--- a/fairseq/data/pad_dataset.py
+++ b/fairseq/data/pad_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.data import data_utils
 
diff --git a/fairseq/data/prepend_token_dataset.py b/fairseq/data/prepend_token_dataset.py
index 3daf50f389..9dac71badf 100644
--- a/fairseq/data/prepend_token_dataset.py
+++ b/fairseq/data/prepend_token_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 import torch
diff --git a/fairseq/data/raw_label_dataset.py b/fairseq/data/raw_label_dataset.py
index 5f7cc0e43c..e67170f1a5 100644
--- a/fairseq/data/raw_label_dataset.py
+++ b/fairseq/data/raw_label_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/data/round_robin_zip_datasets.py b/fairseq/data/round_robin_zip_datasets.py
index d8ac04651b..5bfc966ce8 100644
--- a/fairseq/data/round_robin_zip_datasets.py
+++ b/fairseq/data/round_robin_zip_datasets.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 
diff --git a/fairseq/data/sort_dataset.py b/fairseq/data/sort_dataset.py
index 3755cd326c..9b510b93a0 100644
--- a/fairseq/data/sort_dataset.py
+++ b/fairseq/data/sort_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 
diff --git a/fairseq/data/strip_token_dataset.py b/fairseq/data/strip_token_dataset.py
index eeb48ae600..69e7ecf9cb 100644
--- a/fairseq/data/strip_token_dataset.py
+++ b/fairseq/data/strip_token_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import BaseWrapperDataset
 
diff --git a/fairseq/data/token_block_dataset.py b/fairseq/data/token_block_dataset.py
index 0e054c5e0d..4633167318 100644
--- a/fairseq/data/token_block_dataset.py
+++ b/fairseq/data/token_block_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/data/transform_eos_dataset.py b/fairseq/data/transform_eos_dataset.py
index 503e4516e2..84350c21cd 100644
--- a/fairseq/data/transform_eos_dataset.py
+++ b/fairseq/data/transform_eos_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/data/transform_eos_lang_pair_dataset.py b/fairseq/data/transform_eos_lang_pair_dataset.py
index 8da2597999..9e19da328b 100644
--- a/fairseq/data/transform_eos_lang_pair_dataset.py
+++ b/fairseq/data/transform_eos_lang_pair_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 from . import FairseqDataset
diff --git a/fairseq/data/truncate_dataset.py b/fairseq/data/truncate_dataset.py
index 0e350e407f..36d3745658 100644
--- a/fairseq/data/truncate_dataset.py
+++ b/fairseq/data/truncate_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import numpy as np
 
diff --git a/fairseq/distributed_utils.py b/fairseq/distributed_utils.py
index b6aa0d0492..e854b85195 100644
--- a/fairseq/distributed_utils.py
+++ b/fairseq/distributed_utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import namedtuple
 import os
diff --git a/fairseq/file_utils.py b/fairseq/file_utils.py
index cc9e7b02c1..d3f14dde54 100644
--- a/fairseq/file_utils.py
+++ b/fairseq/file_utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 """
 Utilities for working with the local dataset cache.
diff --git a/fairseq/hub_utils.py b/fairseq/hub_utils.py
index 60f5143878..bdd025bfca 100644
--- a/fairseq/hub_utils.py
+++ b/fairseq/hub_utils.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3 -u
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import os
 
diff --git a/fairseq/legacy_distributed_data_parallel.py b/fairseq/legacy_distributed_data_parallel.py
index 76824739f8..2e9c82539b 100644
--- a/fairseq/legacy_distributed_data_parallel.py
+++ b/fairseq/legacy_distributed_data_parallel.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 """
 A modified version of the legacy DistributedDataParallel module that uses c10d
diff --git a/fairseq/meters.py b/fairseq/meters.py
index 30973b3f3d..bfa9a24fb4 100644
--- a/fairseq/meters.py
+++ b/fairseq/meters.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import time
 
diff --git a/fairseq/models/__init__.py b/fairseq/models/__init__.py
index 0e3d146a6e..9cc884cc3a 100644
--- a/fairseq/models/__init__.py
+++ b/fairseq/models/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 MODEL_REGISTRY = {}
 ARCH_MODEL_REGISTRY = {}
diff --git a/fairseq/models/composite_encoder.py b/fairseq/models/composite_encoder.py
index d6859c7cb0..bae48e344c 100644
--- a/fairseq/models/composite_encoder.py
+++ b/fairseq/models/composite_encoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.models import FairseqEncoder
 
diff --git a/fairseq/models/distributed_fairseq_model.py b/fairseq/models/distributed_fairseq_model.py
index 5f5a474807..e858717d97 100644
--- a/fairseq/models/distributed_fairseq_model.py
+++ b/fairseq/models/distributed_fairseq_model.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import inspect
 
diff --git a/fairseq/models/fairseq_decoder.py b/fairseq/models/fairseq_decoder.py
index 2e5398e364..f301b96bbd 100644
--- a/fairseq/models/fairseq_decoder.py
+++ b/fairseq/models/fairseq_decoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn as nn
 
diff --git a/fairseq/models/fairseq_encoder.py b/fairseq/models/fairseq_encoder.py
index 52fd4ba4ca..934d6dc018 100644
--- a/fairseq/models/fairseq_encoder.py
+++ b/fairseq/models/fairseq_encoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn as nn
 
diff --git a/fairseq/models/fairseq_incremental_decoder.py b/fairseq/models/fairseq_incremental_decoder.py
index 1c41215571..9eccaf3d50 100644
--- a/fairseq/models/fairseq_incremental_decoder.py
+++ b/fairseq/models/fairseq_incremental_decoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.models import FairseqDecoder
 
diff --git a/fairseq/models/fairseq_model.py b/fairseq/models/fairseq_model.py
index f8bd5ba609..0cf7cf2684 100644
--- a/fairseq/models/fairseq_model.py
+++ b/fairseq/models/fairseq_model.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Base classes for various fairseq models.
 """
diff --git a/fairseq/models/fconv.py b/fairseq/models/fconv.py
index 8ca216644a..c0295a9172 100644
--- a/fairseq/models/fconv.py
+++ b/fairseq/models/fconv.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import torch
diff --git a/fairseq/models/fconv_lm.py b/fairseq/models/fconv_lm.py
index ef53bf8bc6..f2320b1700 100644
--- a/fairseq/models/fconv_lm.py
+++ b/fairseq/models/fconv_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import options
 from fairseq.models import (
diff --git a/fairseq/models/fconv_self_att.py b/fairseq/models/fconv_self_att.py
index 09b083303c..1740082572 100644
--- a/fairseq/models/fconv_self_att.py
+++ b/fairseq/models/fconv_self_att.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/models/lightconv.py b/fairseq/models/lightconv.py
index 0dc71a1f70..20ff4f0e6a 100644
--- a/fairseq/models/lightconv.py
+++ b/fairseq/models/lightconv.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/models/lightconv_lm.py b/fairseq/models/lightconv_lm.py
index 8017304983..a0aa13fbd1 100644
--- a/fairseq/models/lightconv_lm.py
+++ b/fairseq/models/lightconv_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import options
 from fairseq.models import (
diff --git a/fairseq/models/lstm.py b/fairseq/models/lstm.py
index 40d9ddf1ed..6b51350f96 100644
--- a/fairseq/models/lstm.py
+++ b/fairseq/models/lstm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/models/masked_lm.py b/fairseq/models/masked_lm.py
index 155173fcda..1ff9f90a3d 100644
--- a/fairseq/models/masked_lm.py
+++ b/fairseq/models/masked_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/models/multilingual_transformer.py b/fairseq/models/multilingual_transformer.py
index 4db2c59eb3..9d17cd6470 100644
--- a/fairseq/models/multilingual_transformer.py
+++ b/fairseq/models/multilingual_transformer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 
diff --git a/fairseq/models/roberta/__init__.py b/fairseq/models/roberta/__init__.py
index bf4bf8fad9..a701923f7e 100644
--- a/fairseq/models/roberta/__init__.py
+++ b/fairseq/models/roberta/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from .hub_interface import *  # noqa
 from .model import *  # noqa
diff --git a/fairseq/models/roberta/hub_interface.py b/fairseq/models/roberta/hub_interface.py
index a2654febb7..4fe2627bec 100644
--- a/fairseq/models/roberta/hub_interface.py
+++ b/fairseq/models/roberta/hub_interface.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/models/roberta/model.py b/fairseq/models/roberta/model.py
index c8794b2607..93555c7d66 100644
--- a/fairseq/models/roberta/model.py
+++ b/fairseq/models/roberta/model.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 RoBERTa: A Robustly Optimized BERT Pretraining Approach.
 """
diff --git a/fairseq/models/transformer.py b/fairseq/models/transformer.py
index 591a486066..53e8f26555 100644
--- a/fairseq/models/transformer.py
+++ b/fairseq/models/transformer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/models/transformer_from_pretrained_xlm.py b/fairseq/models/transformer_from_pretrained_xlm.py
index 06c4a2ca92..bd03c8450f 100644
--- a/fairseq/models/transformer_from_pretrained_xlm.py
+++ b/fairseq/models/transformer_from_pretrained_xlm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import os
 from typing import Any, Dict
diff --git a/fairseq/models/transformer_lm.py b/fairseq/models/transformer_lm.py
index 4a26a75e95..4d5e68e947 100644
--- a/fairseq/models/transformer_lm.py
+++ b/fairseq/models/transformer_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq import options, utils
 from fairseq.models import (
diff --git a/fairseq/models/wav2vec.py b/fairseq/models/wav2vec.py
index e89ede158b..050d4216ae 100644
--- a/fairseq/models/wav2vec.py
+++ b/fairseq/models/wav2vec.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import sys
 
diff --git a/fairseq/modules/__init__.py b/fairseq/modules/__init__.py
index 28abe64dca..8cffb0d792 100644
--- a/fairseq/modules/__init__.py
+++ b/fairseq/modules/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from .adaptive_input import AdaptiveInput
 from .adaptive_softmax import AdaptiveSoftmax
diff --git a/fairseq/modules/adaptive_input.py b/fairseq/modules/adaptive_input.py
index 3ad8603d21..1234b77237 100644
--- a/fairseq/modules/adaptive_input.py
+++ b/fairseq/modules/adaptive_input.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import torch
diff --git a/fairseq/modules/adaptive_softmax.py b/fairseq/modules/adaptive_softmax.py
index 90987950a0..2ab7282813 100644
--- a/fairseq/modules/adaptive_softmax.py
+++ b/fairseq/modules/adaptive_softmax.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import operator
 import functools
diff --git a/fairseq/modules/beamable_mm.py b/fairseq/modules/beamable_mm.py
index b0ece04c3e..df77105a94 100644
--- a/fairseq/modules/beamable_mm.py
+++ b/fairseq/modules/beamable_mm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/modules/character_token_embedder.py b/fairseq/modules/character_token_embedder.py
index 8a9e022812..47aeed1f15 100644
--- a/fairseq/modules/character_token_embedder.py
+++ b/fairseq/modules/character_token_embedder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn.functional as F
diff --git a/fairseq/modules/conv_tbc.py b/fairseq/modules/conv_tbc.py
index 1a033f294f..1aa3eff9dc 100644
--- a/fairseq/modules/conv_tbc.py
+++ b/fairseq/modules/conv_tbc.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 from torch.nn.modules.utils import _single
diff --git a/fairseq/modules/downsampled_multihead_attention.py b/fairseq/modules/downsampled_multihead_attention.py
index d9de0730f3..5c401e4f8e 100644
--- a/fairseq/modules/downsampled_multihead_attention.py
+++ b/fairseq/modules/downsampled_multihead_attention.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 #
 
 import math
diff --git a/fairseq/modules/dynamic_convolution.py b/fairseq/modules/dynamic_convolution.py
index 990ff80cf2..a8fa47225d 100644
--- a/fairseq/modules/dynamic_convolution.py
+++ b/fairseq/modules/dynamic_convolution.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/modules/gelu.py b/fairseq/modules/gelu.py
index 998610943b..09fefd850b 100644
--- a/fairseq/modules/gelu.py
+++ b/fairseq/modules/gelu.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 See "Gaussian Error Linear Units (GELUs)" by Dan Hendrycks and Kevin Gimpel with
 the corresponding GitHub repo: https://github.com/hendrycks/GELUs
diff --git a/fairseq/modules/grad_multiply.py b/fairseq/modules/grad_multiply.py
index dc52498132..08d15f55df 100644
--- a/fairseq/modules/grad_multiply.py
+++ b/fairseq/modules/grad_multiply.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/modules/highway.py b/fairseq/modules/highway.py
index 2fd3f6ace9..85212ff44f 100644
--- a/fairseq/modules/highway.py
+++ b/fairseq/modules/highway.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/modules/layer_norm.py b/fairseq/modules/layer_norm.py
index 9a9a4fd3c7..c4872da92f 100644
--- a/fairseq/modules/layer_norm.py
+++ b/fairseq/modules/layer_norm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/modules/learned_positional_embedding.py b/fairseq/modules/learned_positional_embedding.py
index 5636278075..e52b8d4715 100644
--- a/fairseq/modules/learned_positional_embedding.py
+++ b/fairseq/modules/learned_positional_embedding.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn as nn
 
diff --git a/fairseq/modules/lightweight_convolution.py b/fairseq/modules/lightweight_convolution.py
index 810788f206..6191d49501 100644
--- a/fairseq/modules/lightweight_convolution.py
+++ b/fairseq/modules/lightweight_convolution.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/modules/linearized_convolution.py b/fairseq/modules/linearized_convolution.py
index 762332296c..83cff25879 100644
--- a/fairseq/modules/linearized_convolution.py
+++ b/fairseq/modules/linearized_convolution.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn.functional as F
diff --git a/fairseq/modules/logsumexp_moe.py b/fairseq/modules/logsumexp_moe.py
index e1533fe45f..0379f226b0 100644
--- a/fairseq/modules/logsumexp_moe.py
+++ b/fairseq/modules/logsumexp_moe.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/modules/mean_pool_gating_network.py b/fairseq/modules/mean_pool_gating_network.py
index 4a2eb75bcd..7acc664488 100644
--- a/fairseq/modules/mean_pool_gating_network.py
+++ b/fairseq/modules/mean_pool_gating_network.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn.functional as F
diff --git a/fairseq/modules/multihead_attention.py b/fairseq/modules/multihead_attention.py
index 490b93f576..4da628655e 100644
--- a/fairseq/modules/multihead_attention.py
+++ b/fairseq/modules/multihead_attention.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 from torch import nn
diff --git a/fairseq/modules/positional_embedding.py b/fairseq/modules/positional_embedding.py
index 1e8b7373f0..2ba50113d7 100644
--- a/fairseq/modules/positional_embedding.py
+++ b/fairseq/modules/positional_embedding.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn as nn
 
diff --git a/fairseq/modules/scalar_bias.py b/fairseq/modules/scalar_bias.py
index 969f3ac327..c96247c759 100644
--- a/fairseq/modules/scalar_bias.py
+++ b/fairseq/modules/scalar_bias.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 #
 
 import torch
diff --git a/fairseq/modules/sinusoidal_positional_embedding.py b/fairseq/modules/sinusoidal_positional_embedding.py
index d43a0c9c9c..93429e1c0b 100644
--- a/fairseq/modules/sinusoidal_positional_embedding.py
+++ b/fairseq/modules/sinusoidal_positional_embedding.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/modules/sparse_multihead_attention.py b/fairseq/modules/sparse_multihead_attention.py
index a4e8848c43..7e83cc9529 100644
--- a/fairseq/modules/sparse_multihead_attention.py
+++ b/fairseq/modules/sparse_multihead_attention.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import torch
diff --git a/fairseq/modules/sparse_transformer_sentence_encoder.py b/fairseq/modules/sparse_transformer_sentence_encoder.py
index 9df5db5484..771a41e687 100644
--- a/fairseq/modules/sparse_transformer_sentence_encoder.py
+++ b/fairseq/modules/sparse_transformer_sentence_encoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn as nn
 from fairseq.modules import TransformerSentenceEncoder
diff --git a/fairseq/modules/sparse_transformer_sentence_encoder_layer.py b/fairseq/modules/sparse_transformer_sentence_encoder_layer.py
index 9a8f3296c2..f14540074a 100644
--- a/fairseq/modules/sparse_transformer_sentence_encoder_layer.py
+++ b/fairseq/modules/sparse_transformer_sentence_encoder_layer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.modules import TransformerSentenceEncoderLayer
 from fairseq.modules.sparse_multihead_attention import SparseMultiheadAttention
diff --git a/fairseq/modules/transformer_sentence_encoder.py b/fairseq/modules/transformer_sentence_encoder.py
index 08c2de91a2..1699291253 100644
--- a/fairseq/modules/transformer_sentence_encoder.py
+++ b/fairseq/modules/transformer_sentence_encoder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from typing import Optional, Tuple
 
diff --git a/fairseq/modules/transformer_sentence_encoder_layer.py b/fairseq/modules/transformer_sentence_encoder_layer.py
index 4be97d973a..8982ff0ea9 100644
--- a/fairseq/modules/transformer_sentence_encoder_layer.py
+++ b/fairseq/modules/transformer_sentence_encoder_layer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.nn as nn
diff --git a/fairseq/modules/unfold.py b/fairseq/modules/unfold.py
index fde3b4f032..3a142db698 100644
--- a/fairseq/modules/unfold.py
+++ b/fairseq/modules/unfold.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.nn.functional as F
 
diff --git a/fairseq/optim/__init__.py b/fairseq/optim/__init__.py
index 6d5a791232..d8306c4ef6 100644
--- a/fairseq/optim/__init__.py
+++ b/fairseq/optim/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import importlib
 import os
diff --git a/fairseq/optim/adadelta.py b/fairseq/optim/adadelta.py
index c175d51d30..27079a402b 100644
--- a/fairseq/optim/adadelta.py
+++ b/fairseq/optim/adadelta.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.optim
 
diff --git a/fairseq/optim/adafactor.py b/fairseq/optim/adafactor.py
index 55d61d4923..1c026244b5 100644
--- a/fairseq/optim/adafactor.py
+++ b/fairseq/optim/adafactor.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import torch
diff --git a/fairseq/optim/adagrad.py b/fairseq/optim/adagrad.py
index deafd3df92..15b3a1c25a 100644
--- a/fairseq/optim/adagrad.py
+++ b/fairseq/optim/adagrad.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.optim
 
diff --git a/fairseq/optim/adam.py b/fairseq/optim/adam.py
index 5f97173033..e60f2fdf6a 100644
--- a/fairseq/optim/adam.py
+++ b/fairseq/optim/adam.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 import types
diff --git a/fairseq/optim/adamax.py b/fairseq/optim/adamax.py
index fd6874f1dd..2a2e7698ad 100644
--- a/fairseq/optim/adamax.py
+++ b/fairseq/optim/adamax.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import torch.optim
diff --git a/fairseq/optim/bmuf.py b/fairseq/optim/bmuf.py
index c1ceccf827..deec08ea74 100644
--- a/fairseq/optim/bmuf.py
+++ b/fairseq/optim/bmuf.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 import sys
diff --git a/fairseq/optim/fairseq_optimizer.py b/fairseq/optim/fairseq_optimizer.py
index 6a85c33004..58bc7fc2d7 100644
--- a/fairseq/optim/fairseq_optimizer.py
+++ b/fairseq/optim/fairseq_optimizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/optim/fp16_optimizer.py b/fairseq/optim/fp16_optimizer.py
index 7e4f00434b..b3ae1ef49c 100644
--- a/fairseq/optim/fp16_optimizer.py
+++ b/fairseq/optim/fp16_optimizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from itertools import chain
 
diff --git a/fairseq/optim/lamb.py b/fairseq/optim/lamb.py
index b7c7f78b82..e49a96f101 100644
--- a/fairseq/optim/lamb.py
+++ b/fairseq/optim/lamb.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 LAMB optimizer from github.com/cybertronai/pytorch-lamb.
 """
diff --git a/fairseq/optim/lr_scheduler/__init__.py b/fairseq/optim/lr_scheduler/__init__.py
index d02feb5534..edd0a6a13e 100644
--- a/fairseq/optim/lr_scheduler/__init__.py
+++ b/fairseq/optim/lr_scheduler/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import importlib
 import os
diff --git a/fairseq/optim/lr_scheduler/cosine_lr_scheduler.py b/fairseq/optim/lr_scheduler/cosine_lr_scheduler.py
index cc34a3f719..206b79a009 100644
--- a/fairseq/optim/lr_scheduler/cosine_lr_scheduler.py
+++ b/fairseq/optim/lr_scheduler/cosine_lr_scheduler.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/optim/lr_scheduler/fairseq_lr_scheduler.py b/fairseq/optim/lr_scheduler/fairseq_lr_scheduler.py
index b7db369cc5..8b7884829a 100644
--- a/fairseq/optim/lr_scheduler/fairseq_lr_scheduler.py
+++ b/fairseq/optim/lr_scheduler/fairseq_lr_scheduler.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from .. import FairseqOptimizer
 
diff --git a/fairseq/optim/lr_scheduler/fixed_schedule.py b/fairseq/optim/lr_scheduler/fixed_schedule.py
index dc65d942ce..1b9ca3a639 100644
--- a/fairseq/optim/lr_scheduler/fixed_schedule.py
+++ b/fairseq/optim/lr_scheduler/fixed_schedule.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import FairseqLRScheduler, register_lr_scheduler
 
diff --git a/fairseq/optim/lr_scheduler/inverse_square_root_schedule.py b/fairseq/optim/lr_scheduler/inverse_square_root_schedule.py
index fb33ea0cdb..f98a7c3b99 100644
--- a/fairseq/optim/lr_scheduler/inverse_square_root_schedule.py
+++ b/fairseq/optim/lr_scheduler/inverse_square_root_schedule.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import FairseqLRScheduler, register_lr_scheduler
 
diff --git a/fairseq/optim/lr_scheduler/polynomial_decay_schedule.py b/fairseq/optim/lr_scheduler/polynomial_decay_schedule.py
index 1cb223b771..aff57f9b93 100644
--- a/fairseq/optim/lr_scheduler/polynomial_decay_schedule.py
+++ b/fairseq/optim/lr_scheduler/polynomial_decay_schedule.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from . import FairseqLRScheduler, register_lr_scheduler
 
diff --git a/fairseq/optim/lr_scheduler/reduce_lr_on_plateau.py b/fairseq/optim/lr_scheduler/reduce_lr_on_plateau.py
index 365a5e8971..715c714b65 100644
--- a/fairseq/optim/lr_scheduler/reduce_lr_on_plateau.py
+++ b/fairseq/optim/lr_scheduler/reduce_lr_on_plateau.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.optim.lr_scheduler
 
diff --git a/fairseq/optim/lr_scheduler/triangular_lr_scheduler.py b/fairseq/optim/lr_scheduler/triangular_lr_scheduler.py
index a9ef35a24a..fed0cf7ef1 100644
--- a/fairseq/optim/lr_scheduler/triangular_lr_scheduler.py
+++ b/fairseq/optim/lr_scheduler/triangular_lr_scheduler.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/optim/nag.py b/fairseq/optim/nag.py
index 8bdc1de606..c916b6fadb 100644
--- a/fairseq/optim/nag.py
+++ b/fairseq/optim/nag.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 from torch.optim.optimizer import Optimizer, required
diff --git a/fairseq/optim/sgd.py b/fairseq/optim/sgd.py
index ac54352075..c34b9590dd 100644
--- a/fairseq/optim/sgd.py
+++ b/fairseq/optim/sgd.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch.optim
 
diff --git a/fairseq/options.py b/fairseq/options.py
index a991cbef1f..e29187ee5d 100644
--- a/fairseq/options.py
+++ b/fairseq/options.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 
diff --git a/fairseq/pdb.py b/fairseq/pdb.py
index 2ba9982a80..f1ce3c46bc 100644
--- a/fairseq/pdb.py
+++ b/fairseq/pdb.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import multiprocessing
 import os
diff --git a/fairseq/progress_bar.py b/fairseq/progress_bar.py
index 870ac1dafe..a9bb5f97b4 100644
--- a/fairseq/progress_bar.py
+++ b/fairseq/progress_bar.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 """
 Wrapper around various loggers and progress bars (e.g., tqdm).
diff --git a/fairseq/registry.py b/fairseq/registry.py
index 25168e588d..cb0c984ade 100644
--- a/fairseq/registry.py
+++ b/fairseq/registry.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 
 REGISTRIES = {}
diff --git a/fairseq/search.py b/fairseq/search.py
index 742453468a..02dcf628ca 100644
--- a/fairseq/search.py
+++ b/fairseq/search.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/sequence_generator.py b/fairseq/sequence_generator.py
index 93e4fe1b53..87016e9281 100644
--- a/fairseq/sequence_generator.py
+++ b/fairseq/sequence_generator.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import math
 
diff --git a/fairseq/sequence_scorer.py b/fairseq/sequence_scorer.py
index 0ee9582a7f..d125422340 100644
--- a/fairseq/sequence_scorer.py
+++ b/fairseq/sequence_scorer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import sys
diff --git a/fairseq/tasks/__init__.py b/fairseq/tasks/__init__.py
index 5690fbee95..0c147568e6 100644
--- a/fairseq/tasks/__init__.py
+++ b/fairseq/tasks/__init__.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import importlib
diff --git a/fairseq/tasks/audio_pretraining.py b/fairseq/tasks/audio_pretraining.py
index ac97c38ada..e4bf0d79f6 100644
--- a/fairseq/tasks/audio_pretraining.py
+++ b/fairseq/tasks/audio_pretraining.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import os
 
diff --git a/fairseq/tasks/cross_lingual_lm.py b/fairseq/tasks/cross_lingual_lm.py
index 6ad58e79fa..c173f0ad16 100644
--- a/fairseq/tasks/cross_lingual_lm.py
+++ b/fairseq/tasks/cross_lingual_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import os
diff --git a/fairseq/tasks/fairseq_task.py b/fairseq/tasks/fairseq_task.py
index 2993865dab..89a1c866b8 100644
--- a/fairseq/tasks/fairseq_task.py
+++ b/fairseq/tasks/fairseq_task.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 
diff --git a/fairseq/tasks/language_modeling.py b/fairseq/tasks/language_modeling.py
index a5b3470982..066dd89544 100644
--- a/fairseq/tasks/language_modeling.py
+++ b/fairseq/tasks/language_modeling.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import os
diff --git a/fairseq/tasks/legacy_masked_lm.py b/fairseq/tasks/legacy_masked_lm.py
index b4f2c93ac2..12453d3f32 100644
--- a/fairseq/tasks/legacy_masked_lm.py
+++ b/fairseq/tasks/legacy_masked_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import numpy as np
diff --git a/fairseq/tasks/masked_lm.py b/fairseq/tasks/masked_lm.py
index 2b89b1b8e0..f1686258fb 100644
--- a/fairseq/tasks/masked_lm.py
+++ b/fairseq/tasks/masked_lm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import os
diff --git a/fairseq/tasks/multilingual_translation.py b/fairseq/tasks/multilingual_translation.py
index e3225eb5e2..87deadf4f0 100644
--- a/fairseq/tasks/multilingual_translation.py
+++ b/fairseq/tasks/multilingual_translation.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 import copy
diff --git a/fairseq/tasks/semisupervised_translation.py b/fairseq/tasks/semisupervised_translation.py
index 92053fa9aa..612ea48c46 100644
--- a/fairseq/tasks/semisupervised_translation.py
+++ b/fairseq/tasks/semisupervised_translation.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import OrderedDict
 import os
diff --git a/fairseq/tasks/sentence_prediction.py b/fairseq/tasks/sentence_prediction.py
index 0f54ef81f1..483e2469d4 100644
--- a/fairseq/tasks/sentence_prediction.py
+++ b/fairseq/tasks/sentence_prediction.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import os
 
diff --git a/fairseq/tasks/translation.py b/fairseq/tasks/translation.py
index 80e1c2960a..d3f51cb35c 100644
--- a/fairseq/tasks/translation.py
+++ b/fairseq/tasks/translation.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import itertools
 import os
diff --git a/fairseq/tasks/translation_from_pretrained_xlm.py b/fairseq/tasks/translation_from_pretrained_xlm.py
index 941634cf86..347a6eccb7 100644
--- a/fairseq/tasks/translation_from_pretrained_xlm.py
+++ b/fairseq/tasks/translation_from_pretrained_xlm.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from fairseq.data.legacy.masked_lm_dictionary import MaskedLMDictionary
 from fairseq.tasks.translation import TranslationTask
diff --git a/fairseq/tasks/translation_moe.py b/fairseq/tasks/translation_moe.py
index 932b017836..35d44e47cb 100644
--- a/fairseq/tasks/translation_moe.py
+++ b/fairseq/tasks/translation_moe.py
@@ -1,8 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.  # All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import contextlib
 
diff --git a/fairseq/tokenizer.py b/fairseq/tokenizer.py
index ca368db891..8c4d694aa0 100644
--- a/fairseq/tokenizer.py
+++ b/fairseq/tokenizer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import re
 
diff --git a/fairseq/trainer.py b/fairseq/trainer.py
index d2f27e05d1..507687e266 100644
--- a/fairseq/trainer.py
+++ b/fairseq/trainer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 """
 Train a network across multiple GPUs.
diff --git a/fairseq/utils.py b/fairseq/utils.py
index c5062274ac..76473837aa 100644
--- a/fairseq/utils.py
+++ b/fairseq/utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from collections import defaultdict
 import copy
diff --git a/generate.py b/generate.py
index 2498c39e83..c23cc79868 100644
--- a/generate.py
+++ b/generate.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3 -u
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Translate pre-processed data with a trained model.
 """
diff --git a/hubconf.py b/hubconf.py
index 992c259fa3..90acec6775 100644
--- a/hubconf.py
+++ b/hubconf.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import functools
 
diff --git a/interactive.py b/interactive.py
index 632a16f3ed..d9d547a974 100644
--- a/interactive.py
+++ b/interactive.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3 -u
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Translate raw text with a trained model. Batches data on-the-fly.
 """
diff --git a/preprocess.py b/preprocess.py
index c4ac37cf43..a157feeb68 100644
--- a/preprocess.py
+++ b/preprocess.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Data pre-processing: build vocabularies and binarize training data.
 """
diff --git a/score.py b/score.py
index 4aaa0f6bcc..6d9ac89a12 100644
--- a/score.py
+++ b/score.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 BLEU scoring of generated translations against reference translations.
 """
diff --git a/scripts/average_checkpoints.py b/scripts/average_checkpoints.py
index 24c7d9890f..e5e9bce156 100644
--- a/scripts/average_checkpoints.py
+++ b/scripts/average_checkpoints.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import collections
diff --git a/scripts/build_sym_alignment.py b/scripts/build_sym_alignment.py
index bb4809ea58..bb0cac09dd 100644
--- a/scripts/build_sym_alignment.py
+++ b/scripts/build_sym_alignment.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Use this script in order to build symmetric alignments for your translation
 dataset.
diff --git a/scripts/convert_dictionary.lua b/scripts/convert_dictionary.lua
index f0bdf45369..14ee8c997f 100644
--- a/scripts/convert_dictionary.lua
+++ b/scripts/convert_dictionary.lua
@@ -1,9 +1,7 @@
--- Copyright (c) 2017-present, Facebook, Inc.
--- All rights reserved.
+-- Copyright (c) Facebook, Inc. and its affiliates.
 --
--- This source code is licensed under the license found in the LICENSE file in
--- the root directory of this source tree. An additional grant of patent rights
--- can be found in the PATENTS file in the same directory.
+-- This source code is licensed under the MIT license found in the
+-- LICENSE file in the root directory of this source tree.
 --
 -- Usage: convert_dictionary.lua <dict.th7>
 require 'fairseq'
diff --git a/scripts/convert_model.lua b/scripts/convert_model.lua
index 33a0efb32d..61b9213929 100644
--- a/scripts/convert_model.lua
+++ b/scripts/convert_model.lua
@@ -1,9 +1,7 @@
--- Copyright (c) 2017-present, Facebook, Inc.
--- All rights reserved.
+-- Copyright (c) Facebook, Inc. and its affiliates.
 --
--- This source code is licensed under the license found in the LICENSE file in
--- the root directory of this source tree. An additional grant of patent rights
--- can be found in the PATENTS file in the same directory.
+-- This source code is licensed under the MIT license found in the
+-- LICENSE file in the root directory of this source tree.
 --
 -- Usage: convert_model.lua <model_epoch1.th7>
 require 'torch'
diff --git a/scripts/count_docs.py b/scripts/count_docs.py
index eb0de66977..13640f4b6f 100644
--- a/scripts/count_docs.py
+++ b/scripts/count_docs.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Count the number of documents and average number of lines and tokens per
 document in a large file. Documents should be separated by a single empty line.
diff --git a/scripts/read_binarized.py b/scripts/read_binarized.py
index 4b041cd8e6..f48409beb4 100644
--- a/scripts/read_binarized.py
+++ b/scripts/read_binarized.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 
diff --git a/scripts/rm_pt.py b/scripts/rm_pt.py
index de29edf67b..21976cee4f 100644
--- a/scripts/rm_pt.py
+++ b/scripts/rm_pt.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import os
diff --git a/scripts/shard_docs.py b/scripts/shard_docs.py
index 3a906cfd45..f1adac72aa 100644
--- a/scripts/shard_docs.py
+++ b/scripts/shard_docs.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Split a large file into shards while respecting document boundaries. Documents
 should be separated by a single empty line.
diff --git a/scripts/split_train_valid_docs.py b/scripts/split_train_valid_docs.py
index 01624da54c..41fb979ad1 100644
--- a/scripts/split_train_valid_docs.py
+++ b/scripts/split_train_valid_docs.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Split a large file into a train and valid set while respecting document
 boundaries. Documents should be separated by a single empty line.
diff --git a/scripts/wav2vec_manifest.py b/scripts/wav2vec_manifest.py
index 949edd58dc..c80f9883df 100644
--- a/scripts/wav2vec_manifest.py
+++ b/scripts/wav2vec_manifest.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Data pre-processing: build vocabularies and binarize training data.
 """
diff --git a/setup.py b/setup.py
index 7c965010a7..1fd3f6dd34 100644
--- a/setup.py
+++ b/setup.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 from setuptools import setup, find_packages, Extension
 import sys
@@ -37,7 +35,7 @@
     url='https://github.com/pytorch/fairseq',
     classifiers=[
         'Intended Audience :: Science/Research',
-        'License :: OSI Approved :: BSD License',
+        'License :: OSI Approved :: MIT License',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Topic :: Scientific/Engineering :: Artificial Intelligence',
diff --git a/tests/test_average_checkpoints.py b/tests/test_average_checkpoints.py
index e3e3c3c5fa..21f12cb421 100644
--- a/tests/test_average_checkpoints.py
+++ b/tests/test_average_checkpoints.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import collections
 import os
diff --git a/tests/test_backtranslation_dataset.py b/tests/test_backtranslation_dataset.py
index 4d25839f90..b0db3e78c2 100644
--- a/tests/test_backtranslation_dataset.py
+++ b/tests/test_backtranslation_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 
diff --git a/tests/test_binaries.py b/tests/test_binaries.py
index 79650df6ba..d7f80f86ba 100644
--- a/tests/test_binaries.py
+++ b/tests/test_binaries.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import contextlib
 from io import StringIO
diff --git a/tests/test_character_token_embedder.py b/tests/test_character_token_embedder.py
index c4bf6f6778..81042c2a3f 100644
--- a/tests/test_character_token_embedder.py
+++ b/tests/test_character_token_embedder.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import unittest
diff --git a/tests/test_concat_dataset.py b/tests/test_concat_dataset.py
index 5ced554845..dbdb2ac518 100644
--- a/tests/test_concat_dataset.py
+++ b/tests/test_concat_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 
diff --git a/tests/test_convtbc.py b/tests/test_convtbc.py
index d2720dd0ac..fc2ac0b5dc 100644
--- a/tests/test_convtbc.py
+++ b/tests/test_convtbc.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import unittest
diff --git a/tests/test_dictionary.py b/tests/test_dictionary.py
index 4df94b0ce9..b41838b54f 100644
--- a/tests/test_dictionary.py
+++ b/tests/test_dictionary.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import tempfile
 import unittest
diff --git a/tests/test_iterators.py b/tests/test_iterators.py
index 65c5aa70f8..e2751d2b17 100644
--- a/tests/test_iterators.py
+++ b/tests/test_iterators.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 
diff --git a/tests/test_label_smoothing.py b/tests/test_label_smoothing.py
index 5408e5c889..38a627c76c 100644
--- a/tests/test_label_smoothing.py
+++ b/tests/test_label_smoothing.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import copy
diff --git a/tests/test_memory_efficient_fp16.py b/tests/test_memory_efficient_fp16.py
index 296b162212..78e0ac02e8 100644
--- a/tests/test_memory_efficient_fp16.py
+++ b/tests/test_memory_efficient_fp16.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import unittest
diff --git a/tests/test_multi_corpus_sampled_dataset.py b/tests/test_multi_corpus_sampled_dataset.py
index 5d4f3d1964..05b20328c5 100644
--- a/tests/test_multi_corpus_sampled_dataset.py
+++ b/tests/test_multi_corpus_sampled_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 from collections import OrderedDict
diff --git a/tests/test_noising.py b/tests/test_noising.py
index 060b476703..da792a1826 100644
--- a/tests/test_noising.py
+++ b/tests/test_noising.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 from typing import Dict, List
diff --git a/tests/test_reproducibility.py b/tests/test_reproducibility.py
index d1891db3da..dc67379c22 100644
--- a/tests/test_reproducibility.py
+++ b/tests/test_reproducibility.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import contextlib
 from io import StringIO
diff --git a/tests/test_sequence_generator.py b/tests/test_sequence_generator.py
index b65b5e8c79..ce02400de4 100644
--- a/tests/test_sequence_generator.py
+++ b/tests/test_sequence_generator.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import unittest
diff --git a/tests/test_sequence_scorer.py b/tests/test_sequence_scorer.py
index d33ecfcb5e..a7c2a53a90 100644
--- a/tests/test_sequence_scorer.py
+++ b/tests/test_sequence_scorer.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import unittest
diff --git a/tests/test_sparse_multihead_attention.py b/tests/test_sparse_multihead_attention.py
index d6e6ebdb4c..eaf9742cdf 100644
--- a/tests/test_sparse_multihead_attention.py
+++ b/tests/test_sparse_multihead_attention.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import torch
 import unittest
diff --git a/tests/test_token_block_dataset.py b/tests/test_token_block_dataset.py
index 89a19f5dce..41abb194da 100644
--- a/tests/test_token_block_dataset.py
+++ b/tests/test_token_block_dataset.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 
diff --git a/tests/test_train.py b/tests/test_train.py
index 20f6942bbf..7f2eb40204 100644
--- a/tests/test_train.py
+++ b/tests/test_train.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import contextlib
 from io import StringIO
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 0f8dae4090..906289f547 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import unittest
 
diff --git a/tests/utils.py b/tests/utils.py
index 7eb0d297b7..9c0cea15a6 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,9 +1,7 @@
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 import argparse
 import torch
diff --git a/train.py b/train.py
index c4a95023c3..96855970fc 100644
--- a/train.py
+++ b/train.py
@@ -1,10 +1,8 @@
 #!/usr/bin/env python3 -u
-# Copyright (c) 2017-present, Facebook, Inc.
-# All rights reserved.
+# Copyright (c) Facebook, Inc. and its affiliates.
 #
-# This source code is licensed under the license found in the LICENSE file in
-# the root directory of this source tree. An additional grant of patent rights
-# can be found in the PATENTS file in the same directory.
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Train a new model on one or across multiple GPUs.
 """