The patent license is irrevocable unless you file a suit against VP8 users claiming that VP8 violates your own patents. (This is a common clause for open-source patent grants; basically it means that Google can still use its patents "defensively" as a deterrent against other patent suits, but it can't use them in an "offensive" first-strike.)
The patent license is irrevocable unless you file a suit against VP8 users claiming that VP8 violates your own patents. (This is a common clause for open-source patent grants; basically it means that Google can still use its patents "defensively" as a deterrent against other patent suits, but it can't use them in an "offensive" first-strike.)