Mealey's (December 1, 2017, 12:17 PM EST) -- ST. LOUIS — In a Nov. 20 appellee brief, the defendant in a long-running dispute over the “Sealtight” and “Sealtite” trademarks asks the Eighth Circuit U.S. Court of Appeals to affirm a trial court’s judgment in its favor, citing its opponent’s fraud on the U.S. Patent and Trademark Office (PTO), as well as a lapse in the plaintiff’s registration for its purportedly incontestable trademark (B&B Hardware Inc. v. Hargis Industries Inc., No. 17-1570 and 17-1755, 8th Cir.)....