Anspach's game was subject to challenges in the courts. In 1982, after nine years of legal battles, Anspach won a trademark lawsuit in the United States Court of Appeals for the Ninth Circuit. The lawsuit had been brought over the use of the word 'Monopoly' in the game's title. A later act of Congress allowed Kenner's Parker Brothers division to re-register the Monopoly trademark; both companies were subsequently acquired by Hasbro in 1991, which owns the trademark and rights to the game today. Anspach uses the Anti-Monopoly name under a license from Hasbro; he assigned the trademark to Parker Brothers at the conclusion of the Anti-Monopoly case and its appeals.
The game is currently in print, and is produced and distributed worldwide by University Games.