The Patent Trial and Appeal Board of the U.S. Patent and Trademark Office issued a final written decision ending an Inter Partes Review (IPR) trial, rejecting a challenge by Netflix Inc. to U.S. Patent No.  9,184,920 and confirming all challenged claims as patentable.
The patent, owned by DivX LLC, protects an invention on a DRM (Digital Rights Management) architecture that enhances content security by binding active encryption keys to a user, allowing secure streaming.  Netflix filed the petition for IPR after DivX had gone to court to seek compensation from Netflix for infringing the patent.  After full trial, the Board upheld the claims’ patentability.  DivX is represented by Bridget Smith, Kenneth Weatherwax, and other attorneys of Lowenstein & Weatherwax LLP.  The Board’s August 13, 2021 decision may be accessed here.