Cox Communications v. Sony Music Entm't
In a suit by music labels over an internet service provider's subscribers sharing copyrighted music, the Court held the provider was not contributorily liable for its users' infringement and reversed the Fourth Circuit.· AI-written
607 U.S. 583 · No. 24-171 · 2025 term · Roberts Court
Decided Mar 25, 2026 · argued Dec 1, 2025
Economic activity · Patents and copyrights: copyright
Majority opinion: Clarence Thomas
The voteMajority
9–09 in the majority, 0 in dissent
No dissent (9–0)
Reversed and remanded. Cox Communications won.
What this ruling means
Reversed and remanded: the Supreme Court overturned the decision of the U.S. Court of Appeals, Fourth Circuit and sent the case back to that court for further proceedings that follow the Supreme Court’s ruling.
Cox Communications was the petitioner, the side that asked the Supreme Court to review the case. “Won” means the Court gave that side the result it asked for.
From the Supreme Court Database. A justice who agreed with the result but not the reasoning counts in the majority.
Summary
The opening of the case’s Wikipedia article: what the case was about and what the Court held.
Cox Communications, Inc. v. Sony Music Entertainment, 607 U.S. ___ (2026), was a United States Supreme Court case regarding the liability of an internet service provider for its subscribers engaging in copyright infringement.
Cox Communications was sued by multiple music labels for lax enforcement of its users engaged in sharing the labels' copyrighted music, arguing Cox financially benefited from these users. A jury trial found Cox to be liable. On appeal to the Fourth Circuit, the court dismissed findings that Cox engaged in vicarious infringement, but held that Cox was still liable for contributory infringement, with Cox potentially owing several million dollars to the labels.
In a 9-0 decision split among the opinions, the Supreme Court found that Cox Communications was not contributorily liable for the actions of its users, reversing the Fourth Circuit's decision.
Data notes
The text is Wikipedia’s (CC BY-SA 4.0), matched to the case by its citation, docket number or name and year, and is not checked against the opinion. The site keeps the article’s opening section, ending on its last full sentence. The one-sentence summary under the title is the Decisions list’s: Wikipedia’s own ruling sentence, or, tagged “AI-written”, one Claude wrote from this opening.
How the justices voted
Each justice who took part, placed by their provisional Martin–Quinn ideology score for the 2025 term. Filled: the 9 in the majority. Hollow: the 0 in dissent. Colour is the party of the president who appointed them.
Majority(9)
Clarence ThomasWrote the majority opinion
Sonia SotomayorWrote a concurrence
Ketanji JacksonJoined the majority
Elena KaganJoined the majority
John RobertsJoined the majority
Brett KavanaughJoined the majority
Amy BarrettJoined the majority
Neil GorsuchJoined the majority
Samuel AlitoJoined the majority
Dissent(0)
- None.
Data notes
Each justice’s vote and what they wrote are from the justice-centered file of the Supreme Court Database. “Wrote a concurrence” means the justice sided with the majority and wrote separately; a justice who dissented in part is counted on the side they took overall. A justice who wrote nothing is listed as joining their side.
Positions are each justice’s Martin–Quinn score for the case’s term: negative is more liberal, positive more conservative. A score sums up a justice’s votes across the whole term, so it says where they usually sit, not why they voted as they did here. The median line is the Court’s median justice that term.
The 2025 scores are provisional. The official Martin–Quinn release does not cover this term yet, so the scores are copied from Lee Epstein, Andrew D. Martin & Michael J. Nelson, Provisional Data Report on the U.S. Supreme Court's 2025 Term, Table 3.1 (scores by Kevin Quinn), published 2026-06-30. They will be replaced by the official scores when those come out, and may change. The median line is the middle of these nine scores.
The parties
Who brought the case to the Court, who answered it, and how it got there.
- Petitioner
- Cox CommunicationsComputer business or manufacturer, hardware or software
- Respondent
- Sony Music Entm'tAuthor, copyright holder
- Reached the Court by
- Certiorari (the Court chose to hear it)
Data notes
The names are the two sides of the case’s title. The description under each is the Supreme Court Database’s category for that party, in its own wording. The petitioner is the side that asked the Supreme Court to review the decision below. “Why it was taken” appears only when the majority opinion says lower courts disagreed or were unsure about the question; reasons that would fit any case (“to resolve the question presented”, “an important question”) are left out.
The law at issue
The law the Court was asked to apply, and the kind of power it used to decide.
- Provision
- Copyright Act
- Kind of law
- Infrequently litigated statutes
- Decided by
- Statutory construction
Data notes
The Supreme Court Database codes the main constitutional provision, statute or court rule each case turned on, and the basis of the decision: judicial review of a federal or state law, interpreting a statute, supervising the lower courts, and so on. A case can rest on more than one. “Overruled” counts only where the majority opinion says so.
Timeline
What happened at the Court and how the case got there, newest first.
- Mar 25, 2026DecidedDecided · Decided 9–0: reversed and remanded. Cox Communications won.
- Dec 1, 2025ArguedArgued · Oral argument before the Court.
- Not datedTaken upTaken up · The Supreme Court agreed to hear the case (certiorari).
- Not datedCourt belowCourt below · Decided by the U.S. Court of Appeals, Fourth Circuit: affirmed and reversed (or vacated) in part.
- Not datedBeganBegan · The case began in the Virginia Eastern U.S. District Court.
Data notes
From the Supreme Court Database: the court the case began in, the court whose decision the Supreme Court reviewed and what that court did, how the case came to the Court, and the dates of argument and decision. The database does not date the steps in the lower courts. Court names are the database’s.
Other decisions on the same issue
36 other argued cases since 1946 on patents and copyrights: copyright, newest first.
- Warner Chappell Music v. Neal601 U.S. 366May 9, 2024 · 601 U.S. 366Economic activity6–36–3 band
- Andy Warhol Foundation for the Visual Arts v. Goldsmith598 U.S. 508May 18, 2023 · 598 U.S. 508Economic activity7–27–2 band
- Unicolors, Inc v. H&M Hennes & Mauritz, LP145 S. Ct. 941Feb 24, 2022 · 145 S. Ct. 941Economic activity6–36–3 band
- Google LLC v. Oracle America Inc.Landmark141 S. Ct. 1163Apr 5, 2021 · 141 S. Ct. 1163Economic activityLandmark6–27–2 band
- Georgia v. Public.resource.org Inc.140 S. Ct. 1498Apr 27, 2020 · 140 S. Ct. 1498Economic activity5–45–4 band
- Rimini Street Inc. v. Oracle USA Inc.139 S. Ct. 873Mar 4, 2019 · 139 S. Ct. 873Economic activity9–0Unanimous band
- Fourth Estate Public Benefit Corp. v. Wall-Street.com139 S. Ct. 881Mar 4, 2019 · 139 S. Ct. 881Economic activity9–0Unanimous band
- Star Athletica, L.L.C. v. Varsity Brands, Inc.137 S. Ct. 1002Mar 22, 2017 · 137 S. Ct. 1002Economic activity6–27–2 band
- American Broadcasting Cos. v. Aereo, Inc.573 U.S. 431Jun 25, 2014 · 573 U.S. 431Economic activity6–36–3 band
- Petrella v. Metro-Goldwyn-Mayer, Inc.572 U.S. 663May 19, 2014 · 572 U.S. 663Economic activity6–36–3 band
- Supap Kirtsaeng, dba Bluechristine99, Petitioner v. John Wiley & Sons, Inc.568 U.S. 519Mar 19, 2013 · 568 U.S. 519Economic activity6–36–3 band
- Lawrence Golan, et al. v. Eric H. Holder, Jr., Attorney General, et al.565 U.S. 302Jan 18, 2012 · 565 U.S. 302Economic activity6–27–2 band
- Costco Wholesale Corporation, Petitioner v. Omega, S.A.562 U.S. 40Dec 13, 2010 · 562 U.S. 40Economic activity4–45–4 band
- Reed Elsevier, Inc., et al., v. Irvin Muchnick et al.559 U.S. 154Mar 2, 2010 · 559 U.S. 154Economic activity8–0Unanimous band
- Metro-Goldwyn-Mayer Studios, Inc., et al. v. Grokster, Ltd., et al.545 U.S. 913Jun 27, 2005 · 545 U.S. 913Economic activity9–0Unanimous band
- Eric Eldred, et al. v. John D. Ashcroft, Attorney General537 U.S. 186Jan 15, 2003 · 537 U.S. 186Economic activity7–27–2 band
- New York Times Company, Inc., et al. v. Jonathan Tasini, et al.533 U.S. 483Jun 25, 2001 · 533 U.S. 483Economic activity7–27–2 band
- Traffix Devices, Inc. v. Marketing Displays, Inc.Landmark532 U.S. 23Mar 20, 2001 · 532 U.S. 23Economic activityLandmark9–0Unanimous band
- C. Elvin Feltner, Jr. v. Columbia Pictures Television, Inc.523 U.S. 340Mar 31, 1998 · 523 U.S. 340Economic activity9–0Unanimous band
- Quality King Distributors, Inc. v. L'Anza Research International, Inc.523 U.S. 135Mar 9, 1998 · 523 U.S. 135Economic activity9–0Unanimous band
- Lotus Development Corporation v. Borland International, Inc.516 U.S. 233Jan 16, 1996 · 516 U.S. 233Economic activity4–45–4 band
- Luther R. Campbell aka Luke Skyywalker, et al. v. Acuff-Rose Music, Inc.Landmark · Copyright/Patents510 U.S. 569Mar 7, 1994 · 510 U.S. 569Economic activityLandmark · Copyright/Patents9–0Unanimous band
- Feist Publications, Inc. v. Rural Telephone Service Co., Inc.Landmark · Copyright/Patents499 U.S. 340Mar 27, 1991 · 499 U.S. 340Economic activityLandmark · Copyright/Patents9–0Unanimous band
- Stewart et al. v. Abend, dba Authors Research Co.495 U.S. 207Apr 24, 1990 · 495 U.S. 207Economic activity6–36–3 band
- Community for Creative Non-Violence et al. v. Reid490 U.S. 730Jun 5, 1989 · 490 U.S. 730Economic activity9–0Unanimous band
- Harper & Row, Publishers, Inc., et al. v. Nation Enterprises et al.Landmark · Copyright/Patents471 U.S. 539May 20, 1985 · 471 U.S. 539Economic activityLandmark · Copyright/Patents6–36–3 band
- Mills Music, Inc. v. Snyder et al.469 U.S. 153Jan 8, 1985 · 469 U.S. 153Economic activity5–45–4 band
- Sony Corporation of America et al. v. Universal City Studios, Inc., et al.Landmark · Copyright/Patents464 U.S. 417Jan 17, 1984 · 464 U.S. 417Economic activityLandmark · Copyright/Patents5–45–4 band
- Twentieth Century Music Corp. et al. v. Aiken422 U.S. 151Jun 17, 1975 · 422 U.S. 151Economic activity7–27–2 band
- Teleprompter Corp. et al. v. Columbia Broadcasting System, Inc., et al.415 U.S. 394Mar 4, 1974 · 415 U.S. 394Economic activity6–36–3 band
- Goldstein et al. v. California412 U.S. 546Jun 18, 1973 · 412 U.S. 546Economic activity5–45–4 band
- Fortnightly Corp. v. United Artists Television, Inc.392 U.S. 390Jun 17, 1968 · 392 U.S. 390Economic activity5–18–1 band
- Public Affairs Associates, Inc., Trading As Public Affairs Press, v. Rickover369 U.S. 111Mar 5, 1962 · 369 U.S. 111Economic activity6–36–3 band
- Miller Music Corp. v. Charles N. Daniels, Inc.362 U.S. 373Apr 18, 1960 · 362 U.S. 373Economic activity5–45–4 band
- Columbia Broadcasting System, Inc., et al. v. Loew's Inc. et al.356 U.S. 43Mar 17, 1958 · 356 U.S. 43Economic activity4–45–4 band
- F. W. Woolworth Co. v. Contemporary Arts, Inc.344 U.S. 228Dec 22, 1952 · 344 U.S. 228Economic activity7–27–2 band
Data notes
Every other orally argued case with a clear vote, from the 1946 term on, that the Supreme Court Database files under the same issue as this one. The database gives each case one issue from a list of about 270 (abortion, search and seizure of vehicles, the death penalty, and so on), whatever law it turned on.
Official record
Read the full opinion on Justia, the argument audio on Oyez and Wikipedia. Case data from the Supreme Court Database, Version 2026 Release 01, through the 2025 term.