Although he sold his share of the team late last year, Jay-Z is facing a $600 million dollar lawsuit over the Brooklyn Nets’ trademark.

As reported by RadarOnline, even though the Brooklyn Nets are a new franchise, a New York doctor is suing Jay-Z, the NBA and Brooklyn Nets minority owner and developer Bruce Ratner for allegedly stealing the Brooklyn Nets name idea from him as the disgruntled doctor claims that he registered the name more than 10-years ago.

According to the report, Dr. Francois de Cassagnol filed a pro se complaint with the Eastern District of the State of New York on December 9th, 2013 asking for a jury trial over the issue, and he is seeking at least $600 million in damages.

The court documents state that de Cassagnol claims that Hov, the NBA, and Ratner ”fraudulently conspired” and used “loopholes” in the U.S. Patent Office so that they could use the Brooklyn Nets’ name in which he claims that he says he registered a long time before the franchise even moved to Brooklyn.

The docs also read that de Cassagnol claims that before the Nets moved to Brooklyn, he spoke with the NBA and New Jersey Nets, who assured him that the team would not use “Brooklyn Nets,” but would likely use “New York Nets” as the franchise name as he claims, “It was pure mismanagement of the facts.”

Stay tuned to DS and we will keep you updated as the lawsuit plays out in the courtroom.

View the court documents [here].