It is not often we hear about a star athlete embroiled in a legal dispute with his own mom, but that’s the case with Luka Doncic and his mother, Mirjam Poterbin.

Doncic confirmed to longtime NBA reporter Marc Stein that he filed a petition with the United States Patent and Trademark Office regarding canceling the “LUKA DONCIC 7” trademark, which is controlled by his mother and which she has refused to give up.