In February, the U.S. Court of Appeals for the Federal Circuit (CAFC) agreed with the Patent Trial and Appeal Board’s (PTAB’s) decision that the original claims of Zaxcom’s U.S. Patent No. 9,336,307 for Engineering Emmy® and technical OSCAR award-winning wireless microphone technology were unpatentable as obvious, but upheld the substitute claims Zaxcom had proposed. Now, Zaxcom has petitioned the court for rehearing en banc, arguing that the CAFC’s precedent in Fox Factory, Inc. v. SRAM LLC, 944 F.3d 1366 (Fed. Cir. 2019), “confused the law” regarding a rebuttable presumption of nexus.

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