IVAX Pharmaceuticals (UK) Ltd v Chugai Seiyaku Kabushiki Kaisha

IVAX Pharmaceuticals (UK) Ltd v Chugai Seiyaku Kabushiki Kaisha

Claims 1, 3 and 6 of the patent as granted are invalid for obviousness because they cover the use of stearic acid in conventional amounts for conventional lubrication, which was technically obvious. The proposed amendments are not allowable as they introduce added matter not clearly and unambiguously disclosed in the original application. The proposed amended claim 1 would not have been invalid for obviousness, but the amendment is not permitted.

Parties
Claimant and Part 20 Defendant: Ivax Pharmaceuticals (UK) Ltd; Defendant and Part 20 Claimant: Chugai Seiyaku Kabushiki Kaisha
Jurisdiction
England and Wales
Judgment Date
10 April 2006
Procedural Posture
Patent Revocation and Infringement / Final Judgment
Outcome
claims 1, 3 and 6 of the patent as granted are invalid for obviousness; amendments not allowed; proposed amended claim 1 would not have been invalid for obviousness but amendment refused
Legal Topics
Patent Validity, Obviousness, Amendment of Patent Claims, Added Matter, Pharmaceutical Formulations
Intellectual Property Patents Patent Validity Obviousness Amendment of Patent Claims Added Matter Pharmaceutical Formulations

Case Brief

Summary, issues, holding and outcome

More case intelligence is available

Unlock the full research layer for this judgment.

Full judgment text Downloadable case file Legal principles 7 Authorities cited 12 Party arguments 2 Amounts and remedies 4
Sign in to unlock

Parties

Ivax Pharmaceuticals (UK) Ltd

Claimant and Part 20 Defendant

Chugai Seiyaku Kabushiki Kaisha

Defendant and Part 20 Claimant

Procedural Posture

Patent Revocation and Infringement / Final Judgment

Legal Issues

  1. 1 Whether claims 1, 3 and 6 of the patent as granted are invalid for obviousness
  2. 2 Whether the proposed amendments to the patent are allowable under s.76(3)(a) of the Patents Act 1977
  3. 3 Whether the proposed amended claim 1 would be invalid for obviousness

Ratio Decidendi

Claims 1, 3 and 6 of the patent as granted are invalid for obviousness because they cover the use of stearic acid in conventional amounts for conventional lubrication, which was technically obvious. The proposed amendments are not allowable as they introduce added matter not clearly and unambiguously disclosed in the original application. The proposed amended claim 1 would not have been invalid for obviousness, but the amendment is not permitted.

Court Disposition

claims 1, 3 and 6 of the patent as granted are invalid for obviousness; amendments not allowed; proposed amended claim 1 would not have been invalid for obviousness but amendment refused

Orders

  • Patent claims 1, 3 and 6 declared invalid for obviousness
  • Application to amend patent refused