Home > Great American Court Cases > Mapp v. Ohio

Legal Citation: 367 U.S. 643 (1961)

Petitioner
Dollree Mapp

Respondent
State of Ohio

Petitioner's Claim
That the state is barred from using evidence at trial that was obtained through an unlawful search and seizure.

Chief Lawyer for Petitioner
A. L. Kearns

Chief Lawyer for Respondent
Gertrude Bauer Mahon

Justices for the Court
Hugo Lafayette Black, William J. Brennan, Jr., Tom C. Clark (writing for the Court), William O. Douglas, Potter Stewart, Earl Warren

Justices Dissenting
Felix Frankfurter, John Marshall Harlan II, Charles Evans Whittaker

Place
Washington, D.C.

Date of Decision
19 June 1961

Decision
The Court held that the exclusionary rule, which prevents unconstitutionally obtained evidence from being introduced at trial, applies to states as well...