Leonard v. United States
378 U.S. 544 · 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
Leonard v. United States was decided on June 22, 1964 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. The decision was issued per curiam (an unsigned opinion of the Court). SCDB classifies its main issue as “Extra-legal jury influences, miscellaneous” in the Criminal Procedure area.
Read the opinion
Case details
- Citations
- 378 U.S. 544 · 84 S. Ct. 1696 · 12 L. Ed. 2d 1028 · 1964 U.S. LEXIS 831
- Docket number
- 1017 M
- Decided
- June 22, 1964
- Court era
- Warren Court
- Decision type
- Per curiam (no oral argument)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 9–0 (unanimous)
- Opinion assigned by
- Earl Warren
- How the case arrived
- Certiorari
- Issue (SCDB)
- Extra-legal jury influences, miscellaneous
- Issue area
- Criminal Procedure
- 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 | |
| Justice Tom C. Clark | Majority | |
| Chief Justice Earl Warren | Majority | |
| Justice John M. Harlan II | Majority | |
| Justice William J. Brennan Jr. | Majority | |
| Justice Potter Stewart | Majority | |
| Justice Byron R. White | Majority | |
| Justice Arthur J. Goldberg | Majority |
Full case caption
Leonard v. United States
SCDB identifiers: case 1963-171, docket 1963-171-01.
Related decisions
Other cases on “Extra-legal jury influences, miscellaneous”
- Estes v. Texas
- Morford v. United States
- Dennis v. United States
- Frazier v. United States
- Chandler v. Florida
- Fay v. New York
Same Term, same area (Criminal Procedure)
- Newsome v. North Carolina
- Pickelsimer v. Wainwright
- Barnes v. North Carolina
- Panico v. United States
- Evola v. United States
- Crews v. Wainwright
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