Microsoft Corporation v. At&t Corp.
Decided April 30, 2007. Ruth Bader Ginsburg delivered the opinion of the Court.
Docket 05-1056 · 550 U.S. 437 (2007) · Cited 214 times
We don’t yet publish a summary of this opinion — read the official text below for the Court’s holding and reasoning.
How the Justices voted
Decided 7–1.
Majority · 4
- Ruth Bader Ginsburg · delivered the opinion of the Court
- Anthony McLeod Kennedy
- Antonin Scalia
- David Hackett Souter
Concurring · 3
- Clarence Thomas
- Samuel A. Alito Jr. · filed a concurring opinion
- Stephen Gerald Breyer
Dissenting · 1
- John Paul Stevens · filed a dissenting opinion
“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. Source: the Supreme Court Database (Spaeth et al.), Washington University.
Precedents cited
Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.
- Deepsouth Packing Co. v. Laitram Corp. · 406 U.S. 518 (1972)
- Smith v. United States · 507 U.S. 197 (1993)
- F. Hoffmann-La Roche Ltd. v. Empagran S. A. · 542 U.S. 155 (2004)
- Federal Deposit Insurance v. Meyer · 510 U.S. 471 (1994)
- Sony Corp. of America v. Universal City Studios, Inc. · 464 U.S. 417 (1984)
- Equal Employment Opportunity Commission v. Arabian American Oil Co. · 499 U.S. 244 (1991)
Cited by
Later Supreme Court opinions in our collection that cite this case.
- WesternGeco LLC v. ION Geophysical Corp. · 585 U.S. 407 (2018)
- Life Technologies Corp. v. Promega Corp. · 580 U.S. 140 (2017)
- Kiobel v. Royal Dutch Petroleum Co. · 569 U.S. 108 (2013)
- Impression Products, Inc. v. Lexmark Int'l, Inc. · 581 U.S. 360 (2017)
- Morrison v. National Australia Bank Ltd. · 561 U.S. 247 (2010)
- Abitron Austria GmbH v. Hetronic Int'l, Inc. · 600 U.S. 412 (2023)
- Federal Republic of Germany v. Philipp · 592 U.S. 169 (2021)
Official text
Read the official opinion (U.S. Reports, govinfo.gov)
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Ruth Bader Ginsburg’s profile · All Supreme Court opinions · The Supreme Court
Source: the U.S. Reports via govinfo.gov; authoring Justice and vote lineup from the Supreme Court Database (Washington University). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-07-03. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).