Mealey's (June 19, 2018, 11:07 AM EDT) -- SAN FRANCISCO — A California federal judge erred when dismissing a trademark infringement complaint on grounds of trademark invalidity, as well as in his subsequent order canceling the “Mastermind” trademark, the Ninth Circuit U.S. Court of Appeals ruled June 15 (Raul Caiz v. William Leonard Roberts II, et al., No. 17-55051, 9th Cir., 2018 U.S. App. LEXIS 16171)....