CaseTrail

Collateral estoppel or res judicata: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “Collateral estoppel or res judicata,” part of the Judicial Power area.

15decisions
73%favorable to the petitioner
60%unanimous
1altered precedent or struck a law

Decisions by decade

1940s2
1950s4
1960s1
1970s1
1980s3
2000s3
2020s1

Most majority opinions

Legal provisions most often involved

Estoppel6
Res judicata3
Bankruptcy Code or Bankruptcy Act1
Federal Rules of Civil or Appellate Procedure1
Article IV, Section 1 (full faith and credit clause)1
Supreme Court Rules1

All 15 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