The U.S. Court of Appeals for the Federal Circuit has affirmed a Daubert ruling and summary judgment in favor of Sony, bringing a decisive close to Genuine Enabling Technology LLC’s (GET) $500 million patent infringement case.
GET had accused Sony’s PlayStation 3 and PlayStation 4 controllers and consoles of infringing claims of U.S. Patent No. 6,219,730, which relates to synchronizing and encoding multiple input data streams into a single combined stream. In November 2022, the Court granted Sony’s motion striking certain unfounded opinions of GET’s expert. Following that ruling, in March 2024, the U.S. District Court for the District of Delaware granted summary judgment of noninfringement to Sony. GET appealed.
On appeal, GET argued that the District Court erred in granting summary judgment of non-infringement to Sony and in excluding its technical expert’s testimony. The dispute centered on whether the Bluetooth module in Sony’s accused products was structurally equivalent to the claimed “encoding means” for synchronizing two input data streams.
As lead counsel for the appeal, Erise prepared the appellate briefs defending its work in the District Court and showing why the summary judgment order was correct. First, Erise showed that GET’s structural equivalency testimony fell short as a matter of law. The expert had ignored large parts of the specification explaining how the “encoding means” structure would operate, focusing almost exclusively on the mere presence of a bit-rate clock—an approach that ran contrary to controlling law.
Second, Erise demonstrated that the expert’s analysis of Sony’s Bluetooth module was a fundamentally flawed results-based analysis. During cross-examination, Erise got the expert to admit that his opinion rested on the belief that nearly all logic designs are equivalent and that all he needed to do was show similar results. Under the governing legal standard, that kind of results-based analysis was insufficient.
Erise partners Cliff Brazen and Adam Seitz were responsible for the appeal, with Mr. Brazen designing the winning strategy at the Federal Circuit.
Erise is trusted to protect some of the world’s most valuable brands in high-stakes disputes. From district court through appeal, we build strategies designed not just to win, but to withstand scrutiny at every level. Because a victory that doesn’t hold up on appeal isn’t a true win at all.
