Amazon.Com, Inc v Interdigital Vc Holdings, Inc & Ors [2025] EWHC 2708 (Pat) (20 October 2025)

Amazon.Com, Inc v Interdigital Vc Holdings, Inc & Ors [2025] EWHC 2708 (Pat) (20 October 2025)

The court granted an interim ex parte anti-anti-suit injunction against InterDigital because there was a real and imminent risk that InterDigital would seek, without notice, to restrain Amazon from pursuing final RAND relief in the UK, which would undermine the English court's jurisdiction and/or be vexatious or...

Source-derived case information.

Citation
[2025] EWHC 2708 (Pat)
Parties
Claimant: Amazon.com, Inc.; Claimant: Amazon Digital UK Limited; Claimant: Amazon Europe Core SARL; Claimant: Amazon EU SARL; Claimant: Amazon Technologies, Inc.; Defendant: InterDigital VC Holdings, Inc.; Defendant: InterDigital, Inc.; Defendant: InterDigital Madison Patent Holdings SAS; Defendant: InterDigital Patent Holdings, Inc.; Defendant: InterDigital CE Patent Holdings SAS; Defendant: Thomson Licensing SAS; Defendant: Vantiva SA
Jurisdiction
England and Wales
Judgment Date
20 October 2025
Procedural Posture
Patents Court Application for Anti Anti Suit Injunction (aasi) / Ex Parte Interim Application
Outcome
Interim ex parte anti-anti-suit injunction granted against InterDigital, pending a return date for inter partes hearing.
Legal Topics
Anti Suit Injunctions, Anti Anti Suit Injunctions, Standard Essential Patents (seps), Rand/frand Licensing, Jurisdiction, Comity
Intellectual Property Civil Procedure Anti Suit Injunctions Anti Anti Suit Injunctions Standard Essential Patents (seps) Rand/frand Licensing Jurisdiction Comity

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Parties

Amazon.com, Inc.

Claimant

Amazon Digital UK Limited

Claimant

Amazon Europe Core SARL

Claimant

Amazon EU SARL

Claimant

Amazon Technologies, Inc.

Claimant

InterDigital VC Holdings, Inc.

Defendant

InterDigital, Inc.

Defendant

InterDigital Madison Patent Holdings SAS

Defendant

InterDigital Patent Holdings, Inc.

Defendant

InterDigital CE Patent Holdings SAS

Defendant

Thomson Licensing SAS

Defendant

Vantiva SA

Defendant

Procedural Posture

Patents Court Application for Anti Anti Suit Injunction (aasi) / Ex Parte Interim Application

Legal Issues

  1. 1 Whether the English court should grant an ex parte anti-anti-suit injunction (AASI) to restrain InterDigital from seeking to restrain Amazon's pursuit of final RAND relief in the UK.
  2. 2 Whether the application should be heard ex parte and without notice to InterDigital.
  3. 3 Whether the requirements of comity and protection of the English court's jurisdiction justify interim AASI relief.

Ratio Decidendi

The court granted an interim ex parte anti-anti-suit injunction against InterDigital because there was a real and imminent risk that InterDigital would seek, without notice, to restrain Amazon from pursuing final RAND relief in the UK, which would undermine the English court's jurisdiction and/or be vexatious or oppressive. The relief was justified on both grounds and was limited in duration pending a prompt inter partes hearing. The order was carefully tailored to avoid interfering with substantive patent infringement proceedings in foreign courts and to respect comity.

Court Disposition

Interim ex parte anti-anti-suit injunction granted against InterDigital, pending a return date for inter partes hearing.

Orders

  • InterDigital is restrained from seeking, pending the return date, to restrain, prevent, or prohibit Amazon from pursuing final RAND relief, the AASI application, the continuation application, and/or the expedition application in the UK proceedings, in any court worldwide.
  • InterDigital is restrained from requiring Amazon to withdraw such claims or seeking to penalise Amazon for pursuing them.