Conversation so far:
What was Mark Cuban's relation to the Mavericks?
Mark Cuban is the owner of the National Basketball Association (NBA)'s Dallas Mavericks.
Did Mark Cuban's decision to buy the Dallas Mavericks pay off?
After Mark Cuban bought the Mavericks their win rate went from 40% to 69%.
Was Mark Cuban heavily involved with decision making about the Dallas Mavericks team?
Mark Cuban made sure he was involved in or at least informed about every decision, whether it was on the business or basketball side.
How else was Mark Cuban involved with the Dallas Mavericks?
Historically, NBA team owners play passive roles and watch basketball games from skyboxes; Mark Cuban sits alongside fans while donning team jerseys and travels in his airplane to attend games.
Were there any controversies involving Mark Cuban?
Mark Cuban's ownership has been the source of extensive media attention and controversy involving league policies.

Question: What was the lawsuit about?
Self-contained rewrite: What was the lawsuit against Mark Cuban about?