Kolovrat v. Oregon
366 U.S. 187 · Decided May 1, 1961 · 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
Kolovrat v. Oregon was decided on May 1, 1961 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. Justice Hugo L. Black wrote the opinion of the Court. SCDB classifies its main issue as “Federal preemption of state legislation or regulation” in the Federalism area.
Read the opinion
Case details
- Citations
- 366 U.S. 187 · 81 S. Ct. 922 · 6 L. Ed. 2d 218 · 1961 U.S. LEXIS 1232
- Docket number
- 102
- Decided
- May 1, 1961
- Argued
- March 30, 1961
- 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
- 9–0 (unanimous)
- Majority opinion
- Hugo L. Black
- Opinion assigned by
- Earl Warren
- How the case arrived
- Certiorari
- Issue area
- Federalism
- Legal provision
- Treaty
- Type of law
- Other
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Hugo L. Black | Majority | Wrote an opinion |
| Justice Felix Frankfurter | Majority | |
| Justice William O. Douglas | Majority | |
| Justice Tom C. Clark | Majority | |
| Chief Justice Earl Warren | Majority | |
| Justice John M. Harlan II | Majority | |
| Justice William J. Brennan Jr. | Majority | |
| Justice Charles E. Whittaker | Majority | |
| Justice Potter Stewart | Majority |
Full case caption
Kolovrat et al. v. Oregon
SCDB identifiers: case 1960-085, docket 1960-085-01.
Related decisions
Other cases on “Federal preemption of state legislation or regulation”
- Campbell v. Hussey
- De Veau v. Braisted
- Ex Parte George
- Northern Natural Gas Co. v. State Corporation Commission of Kansas
- Local 24 v. Oliver
- Local 20 v. Morton
Cases on the same legal provision: Treaty
- Maximov v. United States
- Wilson v. Girard
- Corbett v. Stergios
- Moser v. United States
- Texas v. Louisiana
- Clark v. Allen
Same Term, same area (Federalism)
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