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Limelight Networks v. Akamai Technologies

Updated Oct 18, 2026

In brief

The Supreme Court overturned the ruling against Limelight, saying encouraging infringement requires someone to directly infringe under § 271(a) or another statute.

Where it stands
Decided

Decided 9-0 · June 2, 2014 · Opinion by Justice Alito

What it’s about
Akamai claimed Limelight encouraged patent infringement, and the Federal Circuit allowed liability despite no direct infringement under § 271(a).
Who it affects
The ruling meant Akamai could not hold Limelight liable for encouraging infringement without someone directly infringing under § 271(a) or another statute.

Summary: written with AI from the case record.

Illustration for Limelight Networks, Inc. v. Akamai Technologies, Inc.
Conceptual illustration · AI-generated

What it's about

The Supreme Court ruled that liability for encouraging infringement requires someone to directly infringe under § 271(a) or another statute, overturned the Federal Circuit’s ruling, and sent the case back to the lower court (remanded).

The dispute turned on how two federal patent-law provisions fit together: one covers direct infringement, and the other covers encouraging infringement.

Question presented

Did the Federal Circuit court err in holding that a defendant may be liable for inducing patent infringement under § 271(b) even if no party committed direct infringement under §271(a)?

What the Court decided

Holding

A defendant is not liable for inducing infringement under §271(b) when no one has directly infringed under §271(a) or any other statutory provision. 692 F. 3d 1301, reversed and remanded.

Result
Reversed

The Court's reasoning

The Court said liability under § 271(b) for encouraging infringement requires someone to directly infringe under § 271(a) or another statute.

The vote

  • Joined the judgment
  • Wrote an opinion
Majority · 9joined the Court's opinion
  1. Breyer
  2. Kagan
  3. Thomas
  4. Scalia
  5. Kennedy
  6. Ginsburg
  7. Sotomayor
  8. Roberts
  9. Alitowrote the opinion
9 justices joined the judgment.

What's next

The case returns to the Federal Circuit for further proceedings.

Documents

1

Docket activity

6
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 17, 2026 · Court records

Show 1 more
  • Opinion added: Limelight

    Jun 2, 2014 · Court records

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Oct 18, 2026Methodology

Court records and filings

Reporting and analysis