​Mark Cuban is laying the groundwork for a potential lawsuit over plans for a new Mavericks home arena. His recent legal filing, first reported by Mavs Roundtable, aims to obtain information he says could show that new Mavs majority owner Patrick Dumont unlawfully cut him out of opportunities after he sold his majority stake.Cuban’s Rule 202 petition, filed in Texas state court, is not a lawsuit. It’s a precursor to a potential lawsuit.AdvertisementAdvertisementAdvertisementThe filing mentions multiple issues, with a focus on the Mavericks’ new arena plans, and seeks to compel the deposition of a “corporate representative” for Arena Development Intermediate (ADI), the Delaware-incorporated entity that Dumont’s ownership group formed to pursue a new arena. The petition also asks for “one narrow set of documents” related to that pursuit.“If Cuban is considering suing for fraud, then he will have to prove the other side’s intent—that they intentionally misled him,” says David Coale, a partner at Texas-based law firm Lynn Pinker Hurst & Schwegmann LLP.“That’s always tricky to do and even more challenging if you don’t have visibility into what the other side’s thought process really was,” Coale tells Front Office Sports. “This way, you get some of those cards on the table without beginning a full-blown lawsuit.”According to Coale, it’s going to be at least “several weeks” before any potential lawsuit is filed. First, there must be a court hearing on the petition. Then, if Cuban’s requests are granted, the Dumont side will get time to respond with the requested material. Finally, Cuban and his advisors will look through those materials to determine whether or not to file an actual lawsuit.AdvertisementAdvertisementAdvertisementFor Cuban to get the information he wants, he has to convince the judge he is “not just fishing around, but looking for something specific that really would influence whether a suit is filed or not,” Coale says.Cuban agreed to sell his majority stake in the Mavericks in 2023 at a $3.5 billion valuation; he still owns a 27% stake in the NBA team.This is his first legal action over selling the team, but hardly the first time he has expressed frustration with the sale. In March, he said on a podcast that while he doesn’t regret selling, “I regret who I sold to.” In April, he told Front Office Sports he would like to buy back majority control, but that Dumont and the Adelson family aren’t selling: “What happened was a bunch of people had contacted me; they weren’t happy with the way things were. And I was like, ‘Look, if you can get them to sell, I would be more than happy to contribute my equity… But I didn’t expect that to materialize. I told them I didn’t think it would happen, that I didn’t think the Adelsons had any interest in selling. And they don’t.”AdvertisementAdvertisementAdvertisementThe petition reiterates something Cuban has said publicly: th