Perma Life Mufflers, Inc. v. International Parts Corp.

Perma Life Mufflers and other muffler dealers (plaintiffs) entered franchise agreements with Midas (defendant) that barred them from buying mufflers from other manufacturers or selling outside designated territories, and required them to stock a full Midas product line; the dealers later sued claiming these restrictions violated antitrust law and sought treble damages for lost profits. The court of appeals held the dealers' claim was barred by the unclean-hands doctrine, since they had knowingly accepted the restrictions and profited handsomely as franchisees; the dealers appealed.