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Cox Communications v. Sony Music

No. 24-171 · October Term 2025 · Economic Activity · decided March 25, 2026

questions presented (PDF) · docket · Oyez

73%chance Cox Communications (petitioner) wins · a likely call

Decided: Cox Communications won 9-0. The model was right.

Expected vote 6–3 for Cox Communications. Chance of a unanimous ruling 45%. FantasySCOTUS crowd: 94% Cox Communications.

The case

Sony Music and other record companies are suing Cox Communications, an internet service provider, alleging that Cox is secondarily liable for copyright infringement committed by its subscribers. The Fourth Circuit affirmed a finding of willful contributory infringement against Cox, but reversed a vicarious liability verdict and vacated the damages award. The Supreme Court will decide the proper standard for contributory copyright infringement liability for online service providers and the standard for finding willfulness in such cases.

  • What is the correct legal standard for holding an online service provider liable for contributory copyright infringement by its users, specifically whether merely knowing about infringement and not terminating access is enough, or if affirmative steps to foster infringement are required?
  • What is the proper standard for finding 'willfulness' in copyright infringement cases, particularly whether knowledge of subscribers' illegal conduct is sufficient, or if the service provider must know its own conduct (e.g., not terminating service) was illegal?
  • The Court will need to clarify the scope of its Grokster precedent regarding secondary copyright liability in the context of internet service providers.
  • The decision will impact how internet service providers manage copyright infringement on their networks and their potential financial exposure.

AI brief written by gemini-2.5-flash from the questions presented and the Oyez facts on 2026-10-02. Commentary only; it is not an input to the model.

Parties
Petitioner: Cox Communications, Inc., et al., Petitioners
Respondent: Sony Music Entertainment, et al.
Below
United States Court of Appeals for the Fourth Circuit · February 20, 2024
93 F.4th 222 · ruling coded conservative · cert. granted 6/30/2025
Question presented, as filed

1. This Court has held that a business commits contributory copyright infringement when it "distributes a device with the object of promoting its use to infringe copyright, as shown by clear expression or other affirmative steps to foster infringement." Metro-Goldwyn-Mayer Studios, Inc. v. Grokster , Ltd ., 545 U.S. 913, 919 (2005). The courts of appeals have split three ways over the scope of that ruling, developing differing standards for when it is appropriate to hold an online service provider secondarily liable for copyright infringement committed by users. Did the Fourth Circuit err in holding that a service provider can be held liable for "materially contributing" to copyright infringement merely because it knew that people were using certain accounts to infringe and did not terminate access, without proof that the service provider affirmatively fostered infringement or otherwise intended to promote it? 2. Generally, a defendant cannot be held liable as a willful violator of the law-and subject to increased penalties-without proof that it knew or recklessly disregarded a high risk that its own conduct was illegal. In conflict with the Eighth Circuit, the Fourth Circuit upheld an instruction allowing the jury to find willfulness if Cox knew its subscribers ' conduct was illegal-without proof Cox knew its own conduct in not terminating them was illegal. Did the Fourth Circuit err in holding that mere knowledge of another's direct infringement suffices to find willfulness under 17 U.S.C. § 504(c)?

Facts of the case (Oyez)

Cox Communications, Inc. is a major internet service provider selling internet, telephone, and cable television to millions across the United States. Between 2013 and 2014, some of Cox’s internet subscribers used peer-to-peer file-sharing networks, such as BitTorrent, to download and distribute copyrighted songs owned by numerous record companies and music publishers, including Sony Music Entertainment (the “Plaintiffs”). These record companies, through the Recording Industry Association of America (RIAA), hired a company called MarkMonitor to monitor illegal file sharing and notify internet service providers when infringement was detected. MarkMonitor sent Cox over 163,000 notices of infringement during the relevant period. In response, Cox operated a “thirteen-strike” policy, under which it warned or temporarily suspended subscribers after repeated notices, but in practice it rarely terminated service for copyright infringement, while regularly terminating service for nonpayment. Plaintiffs became frustrated with Cox’s limited enforcement against repeat infringers and sued Cox instead of its subscribers, alleging that Cox was secondarily liable for copyright infringement occurring on its network. Specifically, plaintiffs contended Cox either intentionally contributed to or benefited from its subscribers’ infringements by failing to take adequate steps to stop it, thereby inducing or materially contributing to the unlawful acts. The U.S. District Court for the Eastern District of Virginia denied Cox statutory safe harbor under the Digital Millennium Copyright Act (DMCA) and allowed the case to proceed to trial on theories of vicarious and contributory copyright infringement. The jury found Cox liable on both counts and awarded $1 billion in statutory damages. On appeal, the U.S. Court of Appeals for the Fourth Circuit affirmed the jury’s finding of willful contributory infringement, reversed the vicarious liability verdict, and vacated the damages award, remanding the case for a new trial on damages.

The nine

Each justice's predicted vote and the record behind it: how often they have voted for the petitioner overall, in Economic Activity cases, and when the lower court ruled conservative; and, once argued, how many questions they put to each side (the side a justice questions more tends to lose their vote). The note under each row is the AI brief's reading, commentary rather than model input.

JusticePredictedOverallThis issueLower court conservativeAt argumentVoted
John G. Roberts
Republican appointee · since OT2005

Chief Justice Roberts joined the majority in Grokster, which established the 'object of promoting infringement' standard. His vote may hinge on whether the Fourth Circuit's standard aligns with or departs from that precedent.

64% Cox Communications68%
for the petitioner · 1,512 votes
68%
Economic Activity · 328 votes
61%
lower court conservative · 734 votes
23 / 4
questions at Cox / Sony
Cox Communications ✓
Clarence Thomas
Republican appointee · since OT1991

Justice Thomas often emphasizes textualism and may scrutinize the statutory language of copyright law to determine the appropriate standards for contributory infringement and willfulness, rather than relying on evolving common law standards.

59% Cox Communications59%
for the petitioner · 2,801 votes
62%
Economic Activity · 555 votes
43%
lower court conservative · 1,365 votes
5 / 4
questions at Cox / Sony
Cox Communications ✓
Samuel A. Alito
Republican appointee · since OT2005

Justice Alito also joined the majority in Grokster. His analysis will likely focus on the balance between protecting copyright holders and avoiding undue burdens on internet service providers, consistent with established precedent.

66% Cox Communications62%
for the petitioner · 1,469 votes
67%
Economic Activity · 322 votes
48%
lower court conservative · 722 votes
4 / 6
questions at Cox / Sony
Cox Communications ✓
Sonia Sotomayor
Democratic appointee · since OT2009

Justice Sotomayor often considers the practical implications of legal standards, particularly for new technologies. She may weigh the impact of a broad liability standard on internet access and innovation against the need to protect intellectual property.

66% Cox Communications61%
for the petitioner · 1,192 votes
58%
Economic Activity · 264 votes
76%
lower court conservative · 594 votes
19 / 5
questions at Cox / Sony
Cox Communications ✓
Elena Kagan
Democratic appointee · since OT2010

Justice Kagan joined the Court after Grokster but generally aligns with a pragmatic approach to statutory interpretation. She may focus on how the different circuit standards affect the clarity and enforceability of copyright law in the digital age.

71% Cox Communications63%
for the petitioner · 1,072 votes
59%
Economic Activity · 249 votes
75%
lower court conservative · 543 votes
10 / 7
questions at Cox / Sony
Cox Communications ✓
Neil M. Gorsuch
Republican appointee · since OT2016

Justice Gorsuch often favors a strict interpretation of statutory text and may be skeptical of judicial expansions of liability. He might look for clear congressional intent regarding the scope of contributory infringement for online service providers.

71% Cox Communications65%
for the petitioner · 592 votes
60%
Economic Activity · 141 votes
59%
lower court conservative · 286 votes
15 / 26
questions at Cox / Sony
Cox Communications ✓
Brett M. Kavanaugh
Republican appointee · since OT2018

Justice Kavanaugh tends to favor clear rules and may seek to establish a consistent standard for secondary copyright liability across circuits. He will likely consider the implications for both copyright holders and the technology industry.

71% Cox Communications69%
for the petitioner · 498 votes
68%
Economic Activity · 123 votes
62%
lower court conservative · 244 votes
14 / 8
questions at Cox / Sony
Cox Communications ✓
Amy Coney Barrett
Republican appointee · since OT2020

Justice Barrett often emphasizes originalism and textualism. Her approach to this case may involve a close reading of the Copyright Act and an examination of the historical understanding of secondary liability, particularly in light of the DMCA.

71% Cox Communications66%
for the petitioner · 360 votes
65%
Economic Activity · 85 votes
60%
lower court conservative · 178 votes
15 / 3
questions at Cox / Sony
Cox Communications ✓
Ketanji Brown Jackson
Democratic appointee · since OT2022

Justice Jackson, in her jurisprudence, often considers the real-world impact of legal decisions. She may evaluate how the proposed standards for contributory infringement and willfulness would affect both large corporations and individual internet users.

59% Cox Communications59%
for the petitioner · 244 votes
55%
Economic Activity · 62 votes
80%
lower court conservative · 127 votes
20 / 10
questions at Cox / Sony
Cox Communications ✓

Rates are each justice's own participation record in the Supreme Court Database, the same history the model trains on; a rate on fewer than five votes is not shown. The predicted vote is VotePredictor SCOTUS' per-justice probability from the served model, which also reads the bench-wide transcript signal and how long each side held the podium.

Every call this term, justice by justice · how the model is built and its record. Data as of 2026-10-02.