Mealey's (June 15, 2017, 1:22 PM EDT) -- CINCINNATI — A Michigan couple who sell the “Guppie Kid” children’s clothing line argue in a June 14 brief in the Sixth Circuit U.S. Court of Appeals that clothing related to the Nickelodeon show “Bubble Guppies” infringed their trademarks by overwhelming their senior marks via reverse confusion (Debbie Rohn, et al. v. Viacom International Inc., et al., No. 17-1225, 6th Cir.)....