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