Browse 26 fourth amendment search and seizure cases decided by Ninth Circuit. AI-powered summaries, holdings, and legal analysis.
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Bolandian, decided by Ninth Circuit on April 21, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obt...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Gonzalez-Reyes, decided by Ninth Circuit on April 15, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to su...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Williams, decided by Ninth Circuit on April 13, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obta...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Tekola, decided by Ninth Circuit on March 9, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obtaine...
Ninth Circuit: Ride-sharing data sharing ordinance doesn't violate Fourth Amendment
Uber Technologies, Inc. v. City of Seattle, decided by Ninth Circuit on March 4, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's grant of summary judgment to...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Boylan, decided by Ninth Circuit on March 3, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obtaine...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Motley, decided by Ninth Circuit on February 24, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppres...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Castro Alavez, decided by Ninth Circuit on February 20, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to ...
Ninth Circuit Upholds Warrantless Vehicle Search Under Automobile Exception
United States v. Ruiz, decided by Ninth Circuit on February 20, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obtai...
Consent to search vehicle extends to phone found inside
United States v. Ho-Romero, decided by Ninth Circuit on February 18, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to supp...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Brandenburg, decided by Ninth Circuit on February 17, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to su...
Ninth Circuit: Girlfriend's consent to search valid despite defendant's prior instruction
United States v. Engstrom, decided by Ninth Circuit on February 5, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppre...
Ninth Circuit Upholds Warrantless Vehicle Search Under Automobile Exception
Cardenas-Ornelas v. Johnson, decided by Ninth Circuit on January 29, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence ...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Gomez, decided by Ninth Circuit on January 13, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppress ...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Soto, decided by Ninth Circuit on January 8, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppress ev...
Ninth Circuit: Consent to Vehicle Search Was Voluntary
United States v. Ruiz, decided by Ninth Circuit on January 7, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obtaine...
Ninth Circuit: DOB/Gender Req. for Public Records Doesn't Violate Fourth Amendment
K.C. v. Las Vegas Metropolitan Police Department, decided by Ninth Circuit on January 2, 2026, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a prelimin...
Ninth Circuit: Unreasonable Belief of Weapon Possession Invalidates Search
United States v. Vazquez-Ramirez, decided by Ninth Circuit on January 2, 2026, resulted in a plaintiff win outcome. The Ninth Circuit reviewed the denial of a motion to suppress evidence seized from t...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause and Consent
United States v. Holmes, decided by Ninth Circuit on December 22, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obt...
Ninth Circuit Upholds Warrantless Vehicle Search Under Automobile Exception
United States v. Rodriguez, decided by Ninth Circuit on December 22, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to supp...
Consent to search vehicle extends to phone found inside
United States v. Justus, decided by Ninth Circuit on December 19, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obt...
Consent to search vehicle extends to phone found inside
United States v. Patrick, decided by Ninth Circuit on December 19, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence ob...
Ninth Circuit Upholds Warrantless Vehicle Search Under Automobile Exception
United States v. Avalos, decided by Ninth Circuit on December 17, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppres...
Ninth Circuit Upholds Warrantless Vehicle Search Based on Probable Cause
United States v. Kittson, decided by Ninth Circuit on December 10, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of the defendant's motion to suppre...
Ninth Circuit Upholds Vehicle Search Based on Probable Cause
United States v. Mark Dencklau, decided by Ninth Circuit on November 28, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of Mark Dencklau's motion to ...
Ninth Circuit Upholds Warrantless Vehicle Search Under Automobile Exception
United States v. Allen, decided by Ninth Circuit on November 17, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a motion to suppress evidence obta...
CaseLawBrief currently tracks 26 fourth amendment search and seizure cases from Ninth Circuit. This number is updated as new opinions are published.
Outcome breakdown: Defendant Win: 25, Plaintiff Win: 1.
Each case page on CaseLawBrief includes an AI-generated plain English summary, key holdings, and legal analysis. Click any case above to read its full analysis.