CaseTrail

Antitrust: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “Antitrust,” part of the Economic Activity area.

222decisions
65%favorable to the petitioner
37%unanimous
6altered precedent or struck a law

Decisions by decade

1940s17
1950s50
1960s52
1970s38
1980s34
1990s13
2000s13
2010s4
2020s1

Most majority opinions

Legal provisions most often involved

Sherman Act96
Clayton Act39
Robinson-Patman Act24
Federal Trade Commission Act8
Federal Rules of Civil or Appellate Procedure6
Securities Act of 1933, Securities Exchange Act of 1934, or Williams Act3
15 U.S.C. § 10113
7 U.S.C. § 2912

All 222 decisions, newest first

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