Semtek International Incorporated v. Lockheed Martin Corporation

531 U.S. 497 · Decided February 27, 2001 · Supreme Court of the United States

At a glance

Semtek International Incorporated v. Lockheed Martin Corporation was decided on February 27, 2001 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. Justice Antonin Scalia wrote the opinion of the Court. SCDB classifies its main issue as “Collateral estoppel or res judicata” in the Judicial Power area.

Read the opinion

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Case details

How the Justices voted

Full case caption

Semtek International Incorporated v. Lockheed Martin Corporation

SCDB identifiers: case 2000-026, docket 2000-026-01.

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error