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### Patent License {#h-00-05}
"This implementation" means the copyrightable works distributed by
Google as part of the WebM Project.
Google hereby grants to you a perpetual, worldwide, non-exclusive,
no-charge, royalty-free, irrevocable (except as stated in this
section) patent license to make, have made, use, offer to sell, sell,
import, transfer, and otherwise run, modify and propagate the
contents of this implementation of VP8, where such license applies
only to those patent claims, both currently owned by Google and
acquired in the future, licensable by Google that are necessarily
infringed by this implementation of VP8. This grant does not include
claims that would be infringed only as a consequence of further
modification of this implementation. If you or your agent or
exclusive licensee institute or order or agree to the institution of
patent litigation against any entity (including a cross-claim or
counterclaim in a lawsuit) alleging that this implementation of VP8
or any code incorporated within this implementation of VP8
constitutes direct or contributory patent infringement, or inducement
of patent infringement, then any patent rights granted to you under
this License for this implementation of VP8 shall terminate as of the
date such litigation is filed.