Standard anti-patent language to neuter the patents against AV1 users and implementors. Until patent reform occurs, it's the best we got, and the closest we can

Standard anti-patent language to neuter the patents against AV1 users and implementors. Until patent reform occurs, it's the best we got, and the closest we can get to keeping FOSS patent-free. This is no different than the GPLv3 anti-patent language, imo.