#av1 in patent trouble?

https://arstechnica.com/gadgets/2026/03/av1s-open-royalty-free-promise-in-question-as-dolby-sues-snapchat-over-codec/

“Only because Big Tech says a codec should be royalty-free doesn’t mean that it is. … Given that all codecs use somewhat similar techniques, the risk of an infringement of patents belonging to parties who did not offer royalty-free licenses is substantial”