Phillips Petroleum Co. v. Oklahoma
340 U.S. 190 · Decided December 11, 1950 · 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
Phillips Petroleum Co. v. Oklahoma was decided on December 11, 1950 unanimously (9–0). The Court affirmed the lower court's decision. Justice Tom C. Clark 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
Case details
- Citations
- 340 U.S. 190 · 71 S. Ct. 221 · 95 L. Ed. 2d 204 · 1950 U.S. LEXIS 2476
- Docket number
- 73
- Decided
- December 11, 1950
- Argued
- November 9, 1950
- Court era
- Vinson Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Affirmed
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- Tom C. Clark
- Opinion assigned by
- Fred M. Vinson
- How the case arrived
- Appeal
- Issue (SCDB)
- State or local business regulation
- Issue area
- Economic Activity
- Legal provision
- Fourteenth Amendment (due process)
- Type of law
- Constitutional amendment
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Special concurrence | Wrote an opinion |
| Justice Stanley F. Reed | Majority | |
| Justice Felix Frankfurter | Majority | |
| Justice William O. Douglas | Majority | |
| Justice Robert H. Jackson | Majority | |
| Justice Harold H. Burton | Majority | |
| Chief Justice Fred M. Vinson | Majority | |
| Justice Tom C. Clark | Majority | Wrote an opinion |
| Justice Sherman Minton | Majority |
Full case caption
Phillips Petroleum Co. v. Oklahoma et al.
SCDB identifiers: case 1950-018, docket 1950-018-01.
Related decisions
Other cases on “State or local business regulation”
- Cities Service Gas Co. v. Peerless Oil & Gas Co.
- Dean Milk Co. v. City of MadisonLaw held unconstitutional
- California State Automobile Association Inter-Insurance Bureau v. Maloney
- Standard Oil Co. v. New Jersey
- Breard v. Alexandria
- Buck v. California
Cases on the same legal provision: Fourteenth Amendment (due process)
- Williams v. United States
- Travelers Health Association v. Virginia ex Rel. State Corporation Commission
- Mullane v. Central Hanover Bank & Trust Co.Law held unconstitutional
- Solesbee v. Balkcom
- Treichler v. WisconsinLaw held unconstitutional
- Standard Oil Co. v. PeckAltered precedentLaw held unconstitutional
Same Term, same area (Economic Activity)
- Fogarty v. United States
- Standard Oil Company of New Jersey v. United States
- Libby v. United States
- United States v. United States Gypsum Co.
- Feres v. United States
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.
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