Arizona v. Maricopa County Medical Society
457 U.S. 332 · Decided June 18, 1982 · 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
Arizona v. Maricopa County Medical Society was decided on June 18, 1982 by a vote of 4–3. The Court reversed the lower court's decision. Justice John Paul Stevens wrote the opinion of the Court. SCDB classifies its main issue as “Antitrust” in the Economic Activity area.
Read the opinion
Case details
- Citations
- 457 U.S. 332 · 102 S. Ct. 2466 · 73 L. Ed. 2d 48 · 1982 U.S. LEXIS 5
- Docket number
- 80-419
- Decided
- June 18, 1982
- Argued
- November 4, 1981
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 4–3
- Majority opinion
- John Paul Stevens
- Opinion assigned by
- William J. Brennan Jr.
- How the case arrived
- Certiorari
- Issue (SCDB)
- Antitrust
- Issue area
- Economic Activity
- Legal provision
- Sherman Act
- Type of law
- Federal statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice William J. Brennan Jr. | Majority | |
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Dissent | |
| Justice Lewis F. Powell Jr. | Dissent | Wrote an opinion |
| Justice William H. Rehnquist | Dissent | |
| Justice John Paul Stevens | Majority | Wrote an opinion |
Did not participate: Harry A. Blackmun, Sandra Day O'Connor.
Full case caption
Arizona v. Maricopa County Medical Society et al.
SCDB identifiers: case 1981-125, docket 1981-125-01.
Related decisions
Other cases on “Antitrust”
- Blue Shield of Virginia v. McCready
- Union Labor Life Insurance Co. v. Pireno
- American Society of Mechanical Engineers, Inc. v. Hydrolevel Corp.
- American Medical Association v. Federal Trade Commission
- Community Communications Co., Inc. v. City of Boulder
- Associated General Contractors of California, Inc. v. California State Council of Carpenters
Cases on the same legal provision: Sherman Act
- Rice v. Norman Williams Co.
- Federal Trade Commission v. Superior Court Trial Lawyers Association
- Zenith Radio Corp. v. Hazeltine Research, Inc.
- United Mine Workers of America v. Pennington
- Local Union No. 189 v. Jewel Tea Co., Inc.
- United States v. First National Bank & Trust Co. of Lexington
Same Term, same area (Economic Activity)
- Watt v. Energy Action Educational Foundation
- Central Trust Co. v. Official Creditors' Committee of Geiger Enterprises, Inc.
- United States v. Clark
- Community Communications Co., Inc. v. City of Boulder
- New England Power Co. v. New HampshireLaw held unconstitutional
- G.D. Searle & Co. v. Cohn
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