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Lost profits from overseas patents

WesternGeco v. ION Geophysical

Updated Oct 18, 2026

In brief

The Court overturned the Federal Circuit's judgment and returned the case to that court; it did not specify a damages amount.

Where it stands
Decided

Decided 7-2 · June 22, 2018 · Opinion by Justice Thomas

What it’s about
WesternGeco sought lost-profit damages from ION for foreign sales it said it lost after ION supplied components of its patented technology from the United States for assembly abroad.
Who it affects
The case returns to the Federal Circuit, but the Supreme Court's action does not state a damages amount for WesternGeco.

Summary: written with AI from the case record.

Illustration for WesternGeco LLC v. ION Geophysical Corp.
Conceptual illustration · AI-generated

What it's about

The Supreme Court overturned the Federal Circuit’s ruling that those damages were unavailable and sent the case back to the lower court (remanded).

The dispute asked whether a patent owner could seek profits from overseas sales connected to components supplied from the United States for assembly abroad.

Question presented

Whether the court of appeals erred in holding that lost profits arising from prohibited combinations occurring outside of the United States are categorically unavailable in cases where patent infringement is proven under 35 U.S.C.§ 271(f).

What the Court decided

Holding

Judgment REVERSED and case REMANDED. Thomas, J., delivered the opinion of the Court, in which Roberts, C. J., and Kennedy, Ginsburg, Alito, Sotomayor, and Kagan, JJ., joined. Gorsuch, J., filed a dissenting opinion, in which Breyer, J., joined.

Result
Reversed

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 7joined the Court's opinion
  1. Kagan
  2. Thomaswrote the opinion
  3. Kennedy
  4. Ginsburg
  5. Sotomayor
  6. Roberts
  7. Alito
Dissenting · 2disagreed with the result
  1. Breyer
  2. Gorsuchwrote the dissent
7 justices joined the judgment, 2 dissented.

What's next

The Federal Circuit will handle the case again.

Documents

2

Docket activity

7
  • 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 18, 2026 · Court records

Show 2 more
  • Opinion added: opinion

    Jun 22, 2018 · Court records

  • Brief added: Questions Presented

    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