Chiaverini v. City of Napoleon, Ohio
In brief
Police or other officials cannot defeat a Fourth Amendment claim over a baseless charge merely by pointing to probable cause for a different charge.
- Where it stands
- Decided
Decided 6-3 · June 20, 2024 · Opinion by Justice Kagan
- What it’s about
- The Supreme Court ruled that a Fourth Amendment malicious prosecution claim can proceed regarding a baseless criminal charge, even if other valid charges supported by probable cause were brought at the same time.
- Who it affects
- A person facing several charges can challenge a baseless charge even when another charge was supported by probable cause. Lower courts must assess the challenged charge rather than treating one valid charge as a complete defense.
Summary: written with AI from the case record.

What it's about
The Court rejected a lower court's rule that the presence of probable cause for any single charge automatically defeats a malicious prosecution claim for other baseless charges.
The decision says Fourth Amendment claims involving pretrial detention and baseless charges are governed by a charge-specific rule.
Question presented
May a Fourth Amendment malicious-prosecution claim proceed as to a baseless criminal charge so long as other charges brought alongside the baseless charge are supported by probable cause?
What the Court decided
Holding
The presence of probable cause for one charge in a criminal proceeding does not categorically defeat a Fourth Amendment maliciousprosecution claim relating to another, baseless charge. The parties, and the United States as amicus curiae , all agree with this conclusion, which follows from both the Fourth Amendment and traditional common-law practice. Under the Fourth Amendment, a pretrial detention counts as an unreasonable seizure, and so is illegal, unless it is based on probable cause. See Manuel v. Joliet , 580 U. S. 357, at 364–369. Even when a detention is justified at the outset, moreover, it may become unreasonably prolonged if the reason for it lapses. Rodriguez v. Vacated and remanded.
- Result
- Vacated
The vote
From the opinions
“The presence of probable cause for one charge in a criminal proceeding does not categorically defeat a Fourth Amendment maliciousprosecution claim relating to another, baseless charge.”
“Respectfully, it is hard to know where this tort comes from.”
What's next
The case returns to the lower courts, which must apply the charge-specific rule. Courts and affected officials must evaluate whether the challenged charge itself lacked probable cause and caused an unreasonable seizure.
Docket activity
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AI analysis generated: Impact Analysis
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Brief added: Questions Presented
More questions
- What did the Supreme Court rule in Chiaverini v. City of Napoleon?
- The Court ruled that probable cause for one charge does not automatically defeat a Fourth Amendment claim concerning another baseless charge.
- Who won Chiaverini v. City of Napoleon?
- Jascha Chiaverini won the Supreme Court ruling on the legal question. The Court rejected the Sixth Circuit's contrary rule and sent the case back.
- How does Chiaverini affect people facing multiple charges?
- They may challenge a baseless charge even if another charge had probable cause. Courts must consider the challenged charge separately.
- What happens next in Chiaverini v. City of Napoleon?
- The lower courts will reconsider the case under the Supreme Court's charge-specific rule.
- Is the charge-specific rule still the law after Chiaverini?
- Yes. Probable cause for one charge does not categorically defeat a Fourth Amendment malicious-prosecution claim involving another baseless charge.
Sources
Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.