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

Background

Dealers who ran 'Midas Muffler Shops' signed sales agreements from Midas, Inc., a subsidiary of International Parts. Those agreements required dealers to buy all mufflers and parts from Midas, sell at prices set by Midas, stay in assigned territories, and carry the full line — restrictions dealers say harmed their businesses. The dealers sued, claiming Midas and related companies combined to limit competition and gave better prices and services to some customers. Lower courts granted summary judgment for Midas, in part saying the dealers were 'in pari delicto' — equally at fault — for signing the agreements.

Reasoning

The Court asked whether the old common-law 'in pari delicto' or 'equal fault' rule should stop a private antitrust lawsuit. The majority said no. It explained that Congress created private antitrust suits to help enforce competition rules and that letting a defendant use an equal-fault defense would undermine that purpose. The Court found evidence that many restrictive clauses were not truly voluntary for dealers, that Midas refused requests to buy elsewhere, and that the dealers were often coerced by the business structure. The Court reversed and sent the case back for trial.

Real world impact

The decision makes it harder for companies to block dealer lawsuits by calling dealers equally at fault for unfair franchise terms. Dealers who can show they were forced into restrictive contracts can now seek damages, including triple damages, and have their claims tried on the facts. The ruling also rejected the idea that corporations with common ownership can avoid antitrust liability simply by acting through separate entities.

Dissents or concurrances

Several Justices agreed the result should be reversal but differed on limits. Some urged a narrower rule that bars recovery when a plaintiff truly helped form the illegal scheme, while others focused on measuring responsibility when both sides share blame.