Zimmer, Citron & Clarke Defends Viasat Victory in Federal Circuit Patent Appeal

Zimmer, Citron & Clarke LLP filed a brief in the U.S. Court of Appeals for the Federal Circuit defending Viasat’s district court victory in a patent dispute involving secure media streaming and digital rights management technology.

The case stems from allegations by Sandisk Technologies that Viasat infringed patents related to secure storage, streaming, and authentication systems for digital media content. The district court granted summary judgment for Viasat, adopting Viasat’s proposed claim constructions and holding that Sandisk had not properly disclosed a valid infringement theory under those constructions. Sandisk asks the Federal Circuit to reverse the district court’s claim constructions and summary judgment rulings. Viasat’s brief explains why the district court’s claim constructions were correct and why the district court acted well within its discretion in holding Sandisk to the infringement theories it timely disclosed.

The underlying case is Sandisk Technologies, Inc., et al. v. Viasat, Inc., U.S. District Court for the Northern District of California, Case No. 4:22-cv-04376. The appeal is pending before the U.S. Court of Appeals for the Federal Circuit, Case No. 26-1205