October Term 2017 · Docket 16-1011

Can US patent law award damages for foreign losses?

WesternGeco seeks damages for ION's foreign use of its technology. ION argues US law cannot reach those losses.

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WesternGeco LLC v. ION Geophysical Corp.
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Verified source milestones

  1. — An official oral-argument transcript was verified.
  2. — An official oral-argument transcript was verified.

The arguments, in order

This case may have been argued more than once. Each entry below uses that session's official transcript. Later arguments do not erase earlier ones.

  1. Argument 1 ·

    What happened at the argument

    Paul Clement argued Section 271(f) prohibits specific domestic infringement acts.

    Sri Shanmugam argued the presumption against extraterritoriality applies to remedial provisions.

    Justice Breyer questioned whether foreign nations could adopt similar statutes.

    Justice Gorsuch focused on the distinction between high seas and inland waters.

    Read the official transcript for this argument · Official argument details

    Sources used for this argument breakdown

A citizen's guide to the whole case

What this case is about

WesternGeco wants a US court to award damages for ION's foreign use of its technology. ION wants the court to deny those damages because the use occurred abroad.

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How the case got here

The Supreme Court heard oral argument in this case on April 16, 2018.

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What each side wants

WesternGeco wants the Court to allow damages for foreign losses.

ION wants the Court to bar damages for foreign losses.

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What each side says

WesternGeco argues Section 271(f) targets domestic acts with foreign consequences.

ION argues the presumption against extraterritoriality bars foreign damages.

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What the justices asked

Justice Breyer asked if other countries could enact similar laws.

Justice Gorsuch asked about the difference between high seas and Lake Michigan.

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Why it matters

This case defines the geographic reach of US patent damages. It determines whether US courts can compensate for foreign economic harm. The outcome shapes global business risk for technology firms.

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What happens next

This article currently covers the argument record. Use the official docket link for later case activity.

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Official Court provenance

Official docket and case history · Official Supreme Court oral-argument detail page

Title and summary sources

Revision history

  1. Revision 1 · Official Transcript ·

    Correction: Rewritten to the concise citizen-facing editorial standard.

  2. Revision 2 · Official Transcript ·

    Correction: Migrated to the dated official Court activity contract without model use.

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