American Society of Mechanical Engineers, Inc. v. Hydrolevel Corp.
456 U.S. 556 · Decided May 17, 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
American Society of Mechanical Engineers, Inc. v. Hydrolevel Corp. was decided on May 17, 1982 by a vote of 6–3. The Court affirmed the lower court's decision. Justice Harry A. Blackmun wrote the opinion of the Court. SCDB classifies its main issue as “Antitrust” in the Economic Activity area.
Read the opinion
Case details
- Citations
- 456 U.S. 556 · 102 S. Ct. 1935 · 72 L. Ed. 2d 330 · 1982 U.S. LEXIS 3
- Docket number
- 80-1765
- Decided
- May 17, 1982
- Argued
- January 13, 1982
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Affirmed
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 6–3
- Majority opinion
- Harry A. Blackmun
- Opinion assigned by
- Warren E. Burger
- 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 | Dissent | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Special concurrence | Wrote an opinion |
| Justice Harry A. Blackmun | Majority | Wrote an opinion |
| Justice Lewis F. Powell Jr. | Dissent | Wrote an opinion |
| Justice William H. Rehnquist | Dissent | |
| Justice John Paul Stevens | Majority | |
| Justice Sandra Day O'Connor | Majority |
Full case caption
American Society of Mechanical Engineers, Inc. v. Hydrolevel Corp.
SCDB identifiers: case 1981-092, docket 1981-092-01.
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Cases on the same legal provision: Sherman Act
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- Watt v. Energy Action Educational Foundation
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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