United States v. Penn-Olin Chemical Co.
378 U.S. 158 · Decided June 22, 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
United States v. Penn-Olin Chemical Co. was decided on June 22, 1964 by a vote of 7–2. The Court vacated the lower court's decision and remanded the case. Justice Tom C. Clark wrote the opinion of the Court. SCDB classifies its main issue as “Mergers” in the Economic Activity area.
Read the opinion
Case details
- Citations
- 378 U.S. 158 · 84 S. Ct. 1710 · 12 L. Ed. 2d 775 · 1964 U.S. LEXIS 2383
- Docket number
- 503
- Decided
- June 22, 1964
- Argued
- April 30, 1964
- Court era
- Warren Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Vacated and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 7–2
- Majority opinion
- Tom C. Clark
- Opinion assigned by
- Earl Warren
- How the case arrived
- Appeal
- Issue (SCDB)
- Mergers
- 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 | Special concurrence | |
| Justice William O. Douglas | Special concurrence | Wrote an opinion |
| Justice Tom C. Clark | Majority | Wrote an opinion |
| Chief Justice Earl Warren | Majority | |
| Justice John M. Harlan II | Dissent | Wrote an opinion |
| Justice William J. Brennan Jr. | Majority | |
| Justice Potter Stewart | Majority | |
| Justice Byron R. White | Dissent | |
| Justice Arthur J. Goldberg | Majority |
Full case caption
United States v. Penn-Olin Chemical Co. et al.
SCDB identifiers: case 1963-156, docket 1963-156-01.
Related decisions
Other cases on “Mergers”
- United States v. Continental Can Co.
- United States v. Aluminum Co. of America
- United States v. Continental Oil Co.
- United States v. First National Bank & Trust Co. of Lexington
- United States v. El Paso Natural Gas Co.
- Kennecott Copper Corp. v. United States
Cases on the same legal provision: Clayton Act
- Simpson v. Union Oil Co. of California
- United States v. Boston & Maine Railroad
- Federal Trade Commission v. Consolidated Foods Corp.
- Minnesota Mining & Manufacturing Co. v. New Jersey Wood Finishing Co.
- Leh v. General Petroleum Corp.
- Walker Process Equipment, Inc. v. Food Machinery & Chemical Corp.
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