Mouse ears
Disney challenged prolific EDM musician Deadmau5 in 2014, filing a claim with the Trademark Trial and Appeal Board that stated the artist’s signature mouse head was “nearly identical in appearance, connotation and overall commercial impression to Disney’s Mouse Ear Marks.”
The parties settled the dispute out of court the following year. Terms of the agreement weren’t revealed, but considering that Deadmau5 has been seen wearing the mouse head since, we can safely say no trademark was issued to either party.