Patrick Knowles v. Iowa

525 U.S. 113 · Decided December 8, 1998 · Supreme Court of the United States

At a glance

Patrick Knowles v. Iowa was decided on December 8, 1998 unanimously (9–0). The Court reversed the lower court's decision and remanded the case. Chief Justice William H. Rehnquist wrote the opinion of the Court. SCDB classifies its main issue as “Search and seizure, vehicles” in the Criminal Procedure area. SCDB records that the Court declared a state or territorial law, regulation or constitutional provision unconstitutional.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

Patrick Knowles v. Iowa

SCDB identifiers: case 1998-005, docket 1998-005-01.

Related decisions

Other cases on “Search and seizure, vehicles”

• Wyoming v. Sandra Houghton
  526 U.S. 295Decided April 5, 19996–3Antonin Scalia
• Florida v. Tyvessel Tyvorus White
  526 U.S. 559Decided May 17, 19997–2Clarence Thomas
• Maryland v. Kevin Darnell Dyson
  527 U.S. 465Decided June 21, 19997–2Per curiam
• Maryland v. Jerry Lee Wilson
  519 U.S. 408Decided February 19, 19977–2William H. Rehnquist
• City of Indianapolis v. James EdmondLaw held unconstitutional
  531 U.S. 32Decided November 28, 20006–3Sandra Day O'Connor
• Ohio v. Robert D. Robinette
  519 U.S. 33Decided November 18, 19968–1William H. Rehnquist

See all

Cases on the same legal provision: Fourth Amendment

• Minnesota v. Wayne Thomas Carter
  525 U.S. 83Decided December 1, 19986–3William H. Rehnquist
• Charles H. Wilson v. Harry Layne
  526 U.S. 603Decided May 24, 19998–1William H. Rehnquist
• Rodney C. Hanlon v. Paul W. Berger et Ux.
  526 U.S. 808Decided May 24, 19998–1William H. Rehnquist
• Pennsylvania Board of Probation and Parole v. Keith M. Scott
  524 U.S. 357Decided June 22, 19985–4Clarence Thomas
• United States v. Hernan Ramirez
  523 U.S. 65Decided March 4, 19989–0William H. Rehnquist
• James Michael Flippo v. West Virginia
  528 U.S. 11Decided October 18, 19999–0Per curiam

Same Term, same area (Criminal Procedure)

• Minnesota v. Wayne Thomas Carter
  525 U.S. 83Decided December 1, 19986–3William H. Rehnquist
• Arthur Calderon v. Russell Coleman
  525 U.S. 141Decided December 14, 19985–4Per curiam
• Francois Holloway v. United States
  526 U.S. 1Decided March 2, 19997–2John Paul Stevens
• Manuel Dejesus Peguero v. United States
  526 U.S. 23Decided March 2, 19999–0Anthony M. Kennedy
• Terry Stewart v. Walter Lagrand
  526 U.S. 115Decided March 3, 19998–1Per curiam
• Nathaniel Jones v. United States
  526 U.S. 227Decided March 24, 19995–4David H. Souter

See all

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