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Carpenter v. United States

138 S. Ct. 2206 · Decided June 22, 2018 · Supreme Court of the United States

Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.

At a glance

Carpenter v. United States was decided on June 22, 2018 by a vote of 5–4. The Court reversed the lower court's decision and remanded the case. Chief Justice John G. Roberts Jr. wrote the opinion of the Court. SCDB classifies its main issue as “Search and seizure (general)” in the Criminal Procedure area.

Read the opinion

Case details

Citations
138 S. Ct. 2206 · 201 L. Ed. 2d 507 · 2018 U.S. LEXIS 3844
Docket number
16-402
Decided
June 22, 2018
Argued
November 29, 2017
Court era
Roberts Court
Decision type
Opinion of the Court (orally argued)
Disposition
Reversed and remanded
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
5–4
Majority opinion
John G. Roberts Jr.
Opinion assigned by
John G. Roberts Jr.
How the case arrived
Certiorari
Legal provision
Fourth Amendment
Type of law
Constitutional amendment
Decision direction (SCDB)
Liberal what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Anthony M. KennedyDissentWrote an opinion
Justice Clarence ThomasDissentWrote an opinion
Justice Ruth Bader GinsburgMajority
Justice Stephen G. BreyerMajority
Chief Justice John G. Roberts Jr.MajorityWrote an opinion
Justice Samuel A. Alito Jr.DissentWrote an opinion
Justice Sonia SotomayorMajority
Justice Elena KaganMajority
Justice Neil M. GorsuchDissentWrote an opinion

Full case caption

Carpenter v. United States

SCDB identifiers: case 2017-021, docket 2017-021-01.

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Cases on the same legal provision: Fourth Amendment

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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