On November 11, 2021, the China National Intellectual Property Administration declared claims 1-4, 6-7, and 12 of CN1663258, owned by Dolby International AB, invalid. CN1663258 has been designated essential to the HEVC Advance pool and SISVEL’s AV1 pool. It is also related to patents that have been designated in those pools.

Unified is represented by JZMC Patent and Trademark Law Office, and the case is managed by in-house counsel, Jessica L.A. Marks, Ashraf Fawzy and Jung Hahm.