How serious are the Oakland Raiders about moving to Las Vegas? Serious enough that they have filed for trademarks in case it happens.

Darren Heitner of Forbes discovered this week that the Raiders filed trademark applications with the U.S. Patent and Trademark Office for the mark “Las Vegas Raiders” on Aug. 20. The trademarks have been filed to cover such areas as education and entertainment services, apparel, mobile applications, football helmets, trading cards, jewelry and play figures. Here’s a screenshot of one of the filings.