In the category of asshole owners, the Redskins newest argument for keeping the name is that the government can’t take their trademark away just because it’s offensive (Daily Kos link):

There are extraordinary free speech principles at issue far beyond the
Redskins trademarks. Cancelling a registration based on the government’s disapproval of a trademark discriminates against speech based on content and viewpoint. The District Court nonetheless declared the PTO’s action exempt from any First Amendment scrutiny because registered trademarks are all “government
speech” and registration is a government subsidy “program.” […]

They try to argue that a trademark is equivalent to a book and is protected speech.