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