Illinois Brick Co. v. Illinois

431 U.S. 720 · Decided June 9, 1977 · Supreme Court of the United States

At a glance

Illinois Brick Co. v. Illinois was decided on June 9, 1977 by a vote of 6–3. The Court reversed the lower court's decision and remanded the case. Justice Byron R. White wrote the opinion of the Court. SCDB classifies its main issue as “Antitrust” in the Economic Activity area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

Illinois Brick Co. et al. v. Illinois et al.

SCDB identifiers: case 1976-127, docket 1976-127-01.

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Other cases on “Antitrust”

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Cases on the same legal provision: Clayton Act

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Same Term, same area (Economic Activity)

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  429 U.S. 318Decided January 12, 19779–0Byron R. White
• Brunswick Corp. v. Pueblo Bowl-O-Mat, Inc.
  429 U.S. 477Decided January 25, 19779–0Thurgood Marshall
• United States Steel Corp. v. Fortner Enterprises, Inc.
  429 U.S. 610Decided February 22, 19779–0John Paul Stevens
• Piper v. Chris-Craft Industries, Inc.
  430 U.S. 1Decided February 23, 19777–2Warren E. Burger
• E. I. Du Pont de Nemours & Co. v. Train
  430 U.S. 112Decided February 23, 19778–0John Paul Stevens
• City of Philadelphia v. New Jersey
  430 U.S. 141Decided February 23, 19775–4Per curiam

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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