Dolby HEVC/AV1 patent affirmed invalid in China

On July 31, 2024, the Beijing Intellectual Property Court (BIPC) confirmed that all claims of Chinese patent CN102256122 were invalid. The CN’122 patent is owned by Dolby International. The claims were initially found invalid by the China National Intellectual Property Administration, but Dolby appealed to the BIPC. CN102256122 was purportedly essential or related to patents purportedly essential to the Access Advance patent pool and SISVEL’s AV1 and VP9 pools.

Unified was represented by Weichixue Law Firm for the appeal, and the case was managed by in-house counsel, Jessica L.A. Marks.

Two Chinese ETRI video codec patents held invalid

The Beijing Intellectual Property Court found all claims of two Chinese patents, CN103384333B and CN104219523B, invalid after the patent owner, Electronics and Telecommunications Research Institute (ETRI), filed an appeal. The CN’333 and CN’523 patents are related to patents that are designated essential to the Access Advance (formerly known as HEVC Advance) patent pool as well as SISVEL’s AV1 and VP9 patent pools.

Unified is represented by Tao Chen, Yu Yan, and Peter Zhang at Wei Chixue Law Firm, and the case is managed by in-house counsel, Jessica L.A. Marks and Roshan Mansinghani.

Interdigital AV1 patent deemed essential by SISVEL successfully challenged in China

On January 4, 2022, the China National Intellectual Property Administration declared all challenged claims of CN101491099, owned by Interdigital, invalid. CN101491099 has been designated as essential in the SISVEL’s VP9 and AV1 pools.

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

Interdigital CN'099 invalid by Jennifer M Gallagher on Scribd

Another Dolby patent deemed essential in multiple HEVC/AV1 pools invalidated in China

On December 20, 2021, the China National Intellectual Property Administration declared all claims of CN102256122, owned by Dolby International AB, invalid. CN102256122 is purportedly essential or related to patents purportedly essential to the HEVC Advance pool and SISVEL’s AV1 and VP9 pools.

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

CN102256122 invalidation by Jennifer M Gallagher

Dolby HEVC/AV1 patent challenged successfully in China

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.