diff --git a/PATENTS b/PATENTS
index cd717fa..021cf73 100644
--- a/PATENTS
+++ b/PATENTS
@@ -1,17 +1,33 @@
-Additional Grant of Patent Rights
+Additional Grant of Patent Rights Version 2
 
-“Software” means the Rebound software distributed by Facebook, Inc.
+"Software means the ReboundJS software distributed by Facebook, Inc.
 
-Facebook hereby grants you a perpetual, worldwide, royalty-free, non-exclusive, irrevocable (subject to the termination
-provision below) license under any rights in any patent claims owned by Facebook, 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 a third party, or
-(ii) the Software in combination with any software or other technology provided by you or a third party.
- 
-The license granted hereunder will terminate, automatically and without notice, for anyone that makes any claim
-(including by filing any lawsuit, assertion or other action) alleging (a) direct, indirect, or contributory infringement
-or inducement to infringe any patent: (i) by Facebook or any of its subsidiaries or affiliates, whether or not such
-claim is related to the Software, (ii) by any party if such claim arises in whole or in part from any software, product
-or service of Facebook or any of its subsidiaries or affiliates, whether or not such claim is related to the Software,
-or (iii) by any party relating to the Software; or (b) that any right in any patent claim of Facebook is invalid or
-unenforceable.
+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.