Armour Group Plc v Leisuretech Electronics Pty Ltd [2008] EWHC 2797 (Pat) (14 November 2008)

Armour Group Plc v Leisuretech Electronics Pty Ltd [2008] EWHC 2797 (Pat) (14 November 2008)

The patent as proposed to be amended is invalid for obviousness over common general knowledge. The combination of local amplification with central power, IC amplifiers, and Cat.5 cable was an obvious design choice for the skilled person in 1997, and the use of Cat.5 cable to carry both audio signals and DC power was within the skilled person's common general knowledge. The amendments do not render the claim inventive.

Citation
[2008] EWHC 2797 (Pat)
Parties
Claimant: Armour Group plc; Defendant/claimant: LeisureTech Electronics Pty Limited; Defendant: Armour Home Electronics Limited; Defendant: QED Audio Products Limited
Jurisdiction
England and Wales
Judgment Date
14 November 2008
Procedural Posture
Patent Revocation and Infringement / First Instance Judgment
Outcome
Patent as proposed to be amended held invalid for obviousness; claim for infringement dismissed.
Legal Topics
Patent Validity, Obviousness, Insufficiency, Patent Infringement, Amendment of Patent Claims
Intellectual Property Patents Patent Validity Obviousness Insufficiency Patent Infringement Amendment of Patent Claims

Case Brief

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Parties

Armour Group plc

Claimant

LeisureTech Electronics Pty Limited

Defendant/claimant

Armour Home Electronics Limited

Defendant

QED Audio Products Limited

Defendant

Procedural Posture

Patent Revocation and Infringement / First Instance Judgment

Legal Issues

  1. 1 Whether European Patent (UK) No. 1 004 221 B1 is invalid for obviousness over common general knowledge
  2. 2 Whether the patent is insufficient
  3. 3 Whether the proposed amendments to the patent are allowable

Ratio Decidendi

The patent as proposed to be amended is invalid for obviousness over common general knowledge. The combination of local amplification with central power, IC amplifiers, and Cat.5 cable was an obvious design choice for the skilled person in 1997, and the use of Cat.5 cable to carry both audio signals and DC power was within the skilled person's common general knowledge. The amendments do not render the claim inventive.

Court Disposition

Patent as proposed to be amended held invalid for obviousness; claim for infringement dismissed.

Orders

  • Claim for revocation of the patent is allowed.
  • Claim for infringement is dismissed.