Leh v. General Petroleum Corp.

Background

A partnership of independent gasoline distributors and one partner sued seven petroleum companies in 1956, seeking treble damages under the federal antitrust laws. The companies said the suit was time‑barred under California’s one‑year limit for statutory penalties because the plaintiffs’ claims had accrued by February 1954. Plaintiffs relied instead on a federal tolling rule that pauses the time limit while a related United States antitrust suit, begun in 1950 against many of the same companies, was still pending.

Reasoning

The Court addressed whether the Clayton Act’s tolling clause applies when a private suit is "based in whole or in part on any matter complained of" in a pending government antitrust action. Relying on an earlier decision (Minnesota Mining), the Court rejected a narrow test that required near‑identical claims or precisely the same defendants. Instead, it said courts should compare the complaints on their faces and allow tolling when the private claim bears a real relation to matters the government complained of. Because six of the seven defendants overlapped and the complaints raised substantially similar practices—price fixing, exclusion of independents, and control of supply—the Court found that the private suit was based in part on matters in the government case and reversed the lower courts’ dismissal.

Real world impact

The decision lets private plaintiffs in antitrust cases rely on earlier or ongoing government investigations to suspend filing deadlines when their claims overlap in subject. That gives harmed businesses more time to sue after government proceedings and prevents defendants from defeating suits simply by invoking short state filing periods.