TMZ reports that Disney has filed a claim to stop Deadmau5 from receiving a trademark in the United States for his signature mouse ears, saying that they are too similar to Mickey Mouse’s and would cause brand confusion. The EDM artist — who makes about $16 million a year, according to Forbes — has been wearing his mouse ear mask during live shows for almost a decade. According to his attorney, he already has a trademark for his ears in 30 other countries. Disney claims that by owning a trademark in the U.S., he would damage the company’s business. Deadmau5 tells TMZ that “he won’t be bullied, and is prepared to fight to protect his rights to his property.”

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