Background: The Arena Partnership Dispute

This case arose from a dispute between the entities controlling the Dallas Mavericks (Dallas Sports Group, LLC and Radical Arena, Ltd.) and those controlling the Dallas Stars over their ownership interests in Center Operating Company, L.P. (COC), which leases the American Airlines Center from the City of Dallas, and its general partner, Center GP, LLC. The Mavericks filed suit in October 2025 seeking a declaration that their redemption letter and cash tender effectively redeemed DSE Hockey Club, L.P.'s interests in COC and Center GP. The Mavericks consistently identified Hockey Club as the entity that owned and operated the Dallas Stars and held the relevant partnership interests.

The Entity Identification Issue

The central procedural question involved whether the redemption was effective when the letter named DSE Hockey Club, L.P., but the actual owner of the COC and Center GP interests was Dallas Sports & Entertainment, L.P. (DSELP). The court's May 5, 2026 order ruled that the redemption letter and cash tender were effective as to DSELP despite the technical misnomer. From the outset, the Mavericks associated Hockey Club with the Dallas Stars, stating that "Hockey Club owns and operates the Dallas Stars, the professional ice hockey team headquartered in Frisco that competes in the National Hockey League." Hockey Club and the Stars did not object to, complain about, or raise any concerns regarding those associations. The Mavericks also identified Hockey Club as the entity that co-owned COC and Center GP, and again the Stars did not complain or correct the Mavericks.

Knowledge and Conduct During Litigation

The opinion examined Hockey Club's litigation conduct over seven months, during which it never objected to being sued in the wrong capacity or suggested DSELP was the proper party. The Mavericks identified Brad Alberts as "the Stars' CEO and President," and the court's analysis focused on whether officers, agents, or representatives had actual knowledge of facts that should be imputed to related entities. The court addressed whether an entity has a duty to act on its officers', agents', or representatives' actual knowledge of facts when those facts were arguably presented to a different entity.

Due Process and Accelerated Litigation

The opinion also addressed due process concerns when parties are added to litigation shortly before dispositive events affecting their rights. The parties had agreed to an accelerated schedule, and the court considered whether DSELP, when eventually added, had adequate opportunity to defend its interests. The court's April 2, 2026 summary judgment rulings and May 5, 2026 orders formed the basis for this opinion regarding combined dispositive motions.

Res Judicata and Post-Bankruptcy Claims

The third issue addressed the applicability of res judicata to causes of action based on post-confirmation events regarding assumed and accepted contracts. The court ruled that the Stars' 2011 bankruptcy was not a defense to the Mavericks' claims, and that the April 2nd summary judgment rulings negated the Stars' declaratory judgment counterclaim. The opinion clarifies that res judicata does not bar claims based on conduct occurring after bankruptcy confirmation when those claims involve contracts that were assumed and accepted during the bankruptcy proceedings.