Simpson v. Union Oil Co. of California
377 U.S. 13 · Decided April 20, 1964 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Simpson v. Union Oil Co. of California was decided on April 20, 1964 by a vote of 5–3. The Court reversed the lower court's decision and remanded the case. Justice William O. Douglas wrote the opinion of the Court. SCDB classifies its main issue as “Antitrust” in the Economic Activity area.
Read the opinion
Case details
- Citations
- 377 U.S. 13 · 84 S. Ct. 1051 · 12 L. Ed. 2d 98 · 1964 U.S. LEXIS 2378
- Docket number
- 87
- Decided
- April 20, 1964
- Argued
- January 15, 1964
- Court era
- Warren Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 5–3
- Majority opinion
- William O. Douglas
- Opinion assigned by
- Earl Warren
- How the case arrived
- Certiorari
- Issue (SCDB)
- Antitrust
- Issue area
- Economic Activity
- Legal provision
- Clayton Act
- Type of law
- Federal statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Majority | |
| Justice William O. Douglas | Majority | Wrote an opinion |
| Justice Tom C. Clark | Majority | |
| Chief Justice Earl Warren | Majority | |
| Justice William J. Brennan Jr. | Dissent | Co-authored an opinion |
| Justice Potter Stewart | Dissent | Wrote an opinion |
| Justice Byron R. White | Majority | |
| Justice Arthur J. Goldberg | Dissent | Co-authored an opinion |
Did not participate: John M. Harlan II.
Full case caption
Simpson v. Union Oil Co. of California
SCDB identifiers: case 1963-101, docket 1963-101-01.
Related decisions
Other cases on “Antitrust”
- United States v. Ward Baking Co.
- Viking Theatre Corp. v. Paramount Film Distributing Corp.
- United States v. Singer Manufacturing Co.
- United States v. Boston & Maine Railroad
- Silver v. New York Stock Exchange
- Federal Trade Commission v. Colgate-Palmolive Co.
Cases on the same legal provision: Clayton Act
- United States v. El Paso Natural Gas Co.
- United States v. Aluminum Co. of America
- United States v. Penn-Olin Chemical Co.
- United States v. Continental Can Co.
- United States v. Philadelphia National Bank
- United States v. Von's Grocery Co.
Same Term, same area (Economic Activity)
- Tipton v. Socony Mobil Oil Co., Inc.
- Securities and Exchange Commission v. Capital Gains Research Bureau, Inc.
- Dennis v. Denver & Rio Grande Western Railroad Co.
- Eichel v. New York Central Railroad Co.
- Polar Ice Cream & Creamery Co. v. AndrewsLaw held unconstitutional
- United States v. Wiesenfeld Warehouse Co.
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