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United States v. E. I. Du Pont de Nemours & Co.

351 U.S. 377 · Decided June 11, 1956 · 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

United States v. E. I. Du Pont de Nemours & Co. was decided on June 11, 1956 by a vote of 4–3. The Court affirmed the lower court's decision. Justice Stanley F. Reed wrote the opinion of the Court. SCDB classifies its main issue as “Antitrust” in the Economic Activity area.

Read the opinion

Case details

Citations
351 U.S. 377 · 76 S. Ct. 994 · 100 L. Ed. 2d 1264 · 1956 U.S. LEXIS 1628
Docket number
5
Decided
June 11, 1956
Argued
October 11, 1955
Court era
Warren Court
Decision type
Opinion of the Court (orally argued)
Disposition
Affirmed
Outcome for petitioner
The petitioning party did not receive a favorable disposition
Vote
4–3
Majority opinion
Stanley F. Reed
Opinion assigned by
Stanley F. Reed
How the case arrived
Appeal
Issue (SCDB)
Antitrust
Legal provision
Sherman Act
Type of law
Federal statute
Decision direction (SCDB)
Conservative what this means

How the Justices voted

JusticeVoteSeparate writing
Justice Hugo L. BlackDissent
Justice Stanley F. ReedMajorityWrote an opinion
Justice Felix FrankfurterConcurrenceWrote an opinion
Justice William O. DouglasDissent
Justice Harold H. BurtonMajority
Justice Sherman MintonMajority
Chief Justice Earl WarrenDissentWrote an opinion

Did not participate: Tom C. Clark, John M. Harlan II.

Full case caption

United States v. E. I. Du Pont de Nemours & Co.

SCDB identifiers: case 1955-092, docket 1955-092-01.

Other cases on “Antitrust”

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Cases on the same legal provision: Sherman Act

Same Term, same area (Economic Activity)

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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