Mitsubishi Motors Corp. v. Soler Chrysler-Plymouth, Inc., 473 U.S. 614 (1985), is a United States Supreme Court decision concerning arbitration of antitrust claims. The Court heard the case on appeal from the United States Court of Appeals for the First Circuit, which had ruled that the arbitration clause in a Puerto Rican car dealer's franchise agreement was broad enough to reach its antitrust claim. By a 5–3 margin it upheld the lower court, requiring that the dealer arbitrate its claim before a panel in Tokyo, as stipulated in the contract.