Mealey's (October 22, 2018, 10:44 AM EDT) -- WASHINGTON, D.C. — In an Oct. 12 appellant brief, a patent owner challenges a California federal judge’s determination that its infringement allegations were so baseless as to qualify as exceptional, urging vacatur of an award of more than $563,366 in attorney fees on behalf of six prevailing defendants (Cellspin Soft Inc. v. Fitbit Inc., et al., Nos. 18-2178, -2179, -2180, -2181, -2183, -2184, Fed. Cir.)....