Mark Cuban has taken his increasingly public dispute with Dallas Mavericks majority owner Patrick Dumont to court, accusing his business partner of shutting him out of the team’s plans for a new arena and other lucrative development opportunities.

A new court filing alleges Dumont engaged in “adversarial business practices” and asks a Dallas County judge to force the Mavericks’ ownership to disclose details about its planned Valley View arena development, financing and corporate structure.

Cuban believes he still has a right to be involved in the Mavericks’ business opportunities, despite selling his majority stake in the team to Miriam Adelson and Dumont, her son-in-law, the filing shows.

The billionaire businessman filed a petition in Dallas County this week to review the contract to buy the former Valley View mall site to build a new basketball arena. Cuban also requests details on how the arena project will be financed and to see the corporate structure behind the team’s real estate deal.

Read more from our media partners, The Dallas Morning News.