U.S. Patent Office Cancels Trademark For Redskins Football Team Posted Jun 18, 2014 The United States Patent and Trademark Office has canceled six federal trademark registrations for the name of the Washington Redskins, ruling that the name is “disparaging to Native Americans” and thus cannot be trademarked under federal law that prohibits the protection of offensive or disparaging language. The U.S. PTO’s Trademark Trial and Appeal Board issued a ruling in the case, brought against the team by plaintiff Amanda Blackhorse, Wednesday morning. (Think Progress)