Is Swift v. Tyson still good law?

41 U.S. 1 (1842)

✗ Has been overruled

Editorially curated by Law Student Workbench. Last updated 2026-08-12.

Swift's federal general common law was overruled by Erie Railroad Co. v. Tompkins (1938): federal courts sitting in diversity apply state substantive law.

Later authority

Erie Railroad Co. v. Tompkins, 304 U.S. 64 (1938)overruled

This is an AI signal, not a citator. It flags whether later courts appear to have overruled, limited, or questioned this case — a research starting point. Always confirm on Westlaw (KeyCite) or Lexis (Shepard’s) before you rely on it. Not legal advice.

Check another case → All “still good law?” pages

Generated by Law Student Workbench — every citation checked against real law.