Mealey's (October 7, 2020, 12:52 PM EDT) -- WASHINGTON, D.C. — In an Oct. 6 opinion, the Federal Circuit U.S. Court of Appeals upheld findings by a Nebraska federal judge that a single challenged claim of a lawn mower patent is not invalid, as well as his decision to award prejudgment interest in the case (Exmark Manufacturing Co. v. Briggs & Stratton Power Products Group LLC, No. 19-1878, Fed. Cir., 2020 U.S. App. LEXIS 31709)....