Interdigital Technology Corporation & Ors v Lenovo Group Limited & Ors

Interdigital Technology Corporation & Ors v Lenovo Group Limited & Ors

The patent is valid and essential. Claim 1, properly construed, is limited to the new trigger for sending SI described in the patent and does not cover what was old or disclosed in the PMS. The prior art (PMS and Kim) did not anticipate or make obvious the claimed invention. Routine simulations or analysis would not inevitably have led the skilled person to identify the transmission blocking problem and its solution. The patent is essential to the UMTS standard as the claimed method is required by the standard.

Parties
Claimant: Interdigital Technology Corporation; Claimant: Interdigital Patent Holdings, Inc.; Claimant: Interdigital, Inc.; Claimant: Interdigital Holdings, Inc.; Defendant: Lenovo Group Limited; Defendant: Lenovo (United States) Inc.; Defendant: Lenovo Technology (United Kingdom) Limited; Defendant: Motorola Mobility LLC; Defendant: Motorola Mobility UK Limited
Jurisdiction
England and Wales
Judgment Date
31 January 2023
Procedural Posture
Patent Infringement and Validity / Judgment After Trial
Outcome
Patent held valid and essential
Legal Topics
Patent Validity, Patent Essentiality, Obviousness, Anticipation, Claim Construction
Intellectual Property Patents Patent Validity Patent Essentiality Obviousness Anticipation Claim Construction

Case Brief

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Parties

Interdigital Technology Corporation

Claimant

Interdigital Patent Holdings, Inc.

Claimant

Interdigital, Inc.

Claimant

Interdigital Holdings, Inc.

Claimant

Lenovo Group Limited

Defendant

Lenovo (United States) Inc.

Defendant

Lenovo Technology (United Kingdom) Limited

Defendant

Motorola Mobility LLC

Defendant

Motorola Mobility UK Limited

Defendant

Procedural Posture

Patent Infringement and Validity / Judgment After Trial

Legal Issues

  1. 1 Whether EP(UK) 2 421 318 B1 is valid over the prior art (PMS and Kim)
  2. 2 Whether the patent is essential to the UMTS (3G) standard
  3. 3 Proper construction of claim 1, especially 'in response to' and 'smaller than needed'

Ratio Decidendi

The patent is valid and essential. Claim 1, properly construed, is limited to the new trigger for sending SI described in the patent and does not cover what was old or disclosed in the PMS. The prior art (PMS and Kim) did not anticipate or make obvious the claimed invention. Routine simulations or analysis would not inevitably have led the skilled person to identify the transmission blocking problem and its solution. The patent is essential to the UMTS standard as the claimed method is required by the standard.

Court Disposition

Patent held valid and essential