michael@0: Additional IP Rights Grant (Patents)
michael@0: 
michael@0: "This implementation" means the copyrightable works distributed by
michael@0: Google as part of the WebM Project.
michael@0: 
michael@0: Google hereby grants to you a perpetual, worldwide, non-exclusive,
michael@0: no-charge, royalty-free, irrevocable (except as stated in this section)
michael@0: patent license to make, have made, use, offer to sell, sell, import,
michael@0: transfer, and otherwise run, modify and propagate the contents of this
michael@0: implementation of VP8, where such license applies only to those patent
michael@0: claims, both currently owned by Google and acquired in the future,
michael@0: licensable by Google that are necessarily infringed by this
michael@0: implementation of VP8. This grant does not include claims that would be
michael@0: infringed only as a consequence of further modification of this
michael@0: implementation. If you or your agent or exclusive licensee institute or
michael@0: order or agree to the institution of patent litigation against any
michael@0: entity (including a cross-claim or counterclaim in a lawsuit) alleging
michael@0: that this implementation of VP8 or any code incorporated within this
michael@0: implementation of VP8 constitutes direct or contributory patent
michael@0: infringement, or inducement of patent infringement, then any patent
michael@0: rights granted to you under this License for this implementation of VP8
michael@0: shall terminate as of the date such litigation is filed.