Ohio v. American Express Co.

138 S. Ct. 2274 · Decided June 25, 2018 · Supreme Court of the United States

At a glance

Ohio v. American Express Co. was decided on June 25, 2018 by a vote of 5–4. The Court affirmed the lower court's decision. Justice Clarence Thomas 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
• Supreme Court of the United States — slip opinions, October Term 2017

Case details

How the Justices voted

Full case caption

Ohio v. American Express Co.

SCDB identifiers: case 2017-044, docket 2017-044-01.

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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