Federal Circuit Affirms Invalidity Findings For Audio Tech Patent

( November 5, 2025, 12:50 PM EST) -- WASHINGTON, D.C. — In a nonprecedential Nov. 4 opinion, a Federal Circuit U.S. Court of Appeals panel held that the U.S. Patent Trial and Appeal Board (PTAB) properly construed the disputed claim term “background noise level,” affirming the board’s finding that most claims in a technology company’s patent describing an earpiece device were unpatentable as obvious or anticipated by prior art....

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