1Additional IP Rights Grant (Patents) 2 3"This implementation" means the copyrightable works distributed by 4Google as part of the WebRTC code package. 5 6Google hereby grants to you a perpetual, worldwide, non-exclusive, 7no-charge, irrevocable (except as stated in this section) patent 8license to make, have made, use, offer to sell, sell, import, 9transfer, and otherwise run, modify and propagate the contents of this 10implementation of the WebRTC code package, where such license applies 11only to those patent claims, both currently owned by Google and 12acquired in the future, licensable by Google that are necessarily 13infringed by this implementation of the WebRTC code package. This 14grant does not include claims that would be infringed only as a 15consequence of further modification of this implementation. If you or 16your agent or exclusive licensee institute or order or agree to the 17institution of patent litigation against any entity (including a 18cross-claim or counterclaim in a lawsuit) alleging that this 19implementation of the WebRTC code package or any code incorporated 20within this implementation of the WebRTC code package constitutes 21direct or contributory patent infringement, or inducement of patent 22infringement, then any patent rights granted to you under this License 23for this implementation of the WebRTC code package shall terminate as 24of the date such litigation is filed. 25