While the US and EU patents around MPEG-4 Part 2 expired in recent years, until today there remained one patent still active in Brazil. This final patent was BRPI0109962B1 - "process for storing and processing image information from successive images over time" .
The VIA Licensing Alliance confirmed that this was the final MPEG-4 Visual patent and indeed expiring today, 19 July 2026.
Great to see this day finally realized given the prevalence of MPEG-4.