Exxon Corp. v. Governor of Maryland

437 U.S. 117 · Decided June 14, 1978 · Supreme Court of the United States

At a glance

Exxon Corp. v. Governor of Maryland was decided on June 14, 1978 by a vote of 7–1. The Court affirmed the lower court's decision. Justice John Paul Stevens wrote the opinion of the Court. SCDB classifies its main issue as “State or local business regulation” 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

Did not participate: Lewis F. Powell Jr..

Full case caption

Exxon Corp. et al. v. Governor of Maryland et al.

SCDB identifiers: case 1977-114, docket 1977-114-01.

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Cases on the same legal provision: Fourteenth Amendment (due process)

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• Flagg Bros., Inc. v. Brooks
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Same Term, same area (Economic Activity)

• County Board of Arlington County v. Richards
  434 U.S. 5Decided October 11, 19778–1Per curiam
• Southern Overlying Carrier Chapter of the California Dump Truck Owners Association v. Public Utilities Commission of California
  434 U.S. 9Decided October 11, 19778–1Per curiam
• Adamo Wrecking Co. v. United States
  434 U.S. 275Decided January 10, 19785–4William H. Rehnquist
• Pfizer Inc. v. Government of India
  434 U.S. 308Decided January 11, 19785–3Potter Stewart
• Carter v. MillerLaw held unconstitutional
  434 U.S. 356Decided January 17, 19784–4
• Raymond Motor Transportation, Inc. v. RiceLaw held unconstitutional
  434 U.S. 429Decided February 21, 19788–0Lewis F. Powell Jr.

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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