Mealey's (November 5, 2018, 10:59 AM EST) -- ST. LOUIS — In a Nov. 2 ruling, the Eighth Circuit U.S. Court of Appeals partly found in favor of both parties embroiled in a protracted trademark dispute, upholding a South Dakota federal judge’s rejection of post-trial motions by a defendant accused of infringing the registered “Sturgis Bike Week” mark while also finding that a plaintiff failed to establish that its related registered “Sturgis” and unregistered “Sturgis Motorcycle Rally” and “Sturgis Rally & Races” marks are valid (Sturgis Motorcycle Rally Inc. v. Rushmore Photo & Gifts Inc., et al., Nos. 17-1762, -1869, -2712 and -2731, 8th Cir., 2018 U.S. App. LEXIS 31147)....