An anonymous reader writes After Disney objected to musician Joel Zimmerman [aka Deadmau5]'s trademark application in the U.S. (his logo is already properly trademarked in many other countries), a battle of trademarks and copyrights ensued. Apparently, Disney was (URL has since been disabled, as per DMCA law requires) hosting a video containing a remix of music which Zimmerman claims ownership of. Not only that, but the Deadmau5 logo was prominently displayed next to said video. The mouse fight was on and a few hours ago Deadmau5 retaliated with a rather surprising counter attack. As it turns out, Disney is hosting a Deadmau5 video on their website, without permission. "Disney prominently features the deadmau5 Mark next to the Infringing Video. implying a non-existent endorsement by Zimmerman," the letter reads. "Again. we are unaware of any license allowing you the right to reproduce, distribute or otherwise exploit the deadmau5 Mark or to exploit Zimmerman's name and likeness in connection with same." At the time of writing Disney hasn't complied with the request, but it seems that they have no other option than to comply. Whether it will change anything in their stance towards the DJ's mouse ear trademark application is doubtful though.