Synthon B.V v Smithkline Beecham Plc

Synthon B.V v Smithkline Beecham Plc

The Synthon application did not make available to the public the claimed crystalline form of paroxetine methanesulfonate (PMS) as required by the law of novelty. There were no clear and unmistakable directions in the application to make the claimed form, and the only specific example did not enable the skilled person to produce it. General statements in the application were insufficient to anticipate the patent. Therefore, the patent was not anticipated and the appeal was allowed.

Parties
Claimant/respondent: Synthon B.V.; Defendant/appellant: SmithKline Beecham PLC
Jurisdiction
England and Wales
Judgment Date
25 June 2003
Procedural Posture
Civil Appeal (patent Revocation) / Appeal From Chancery Division to Court of Appeal
Outcome
Appeal allowed; order for revocation set aside; claim for revocation dismissed.
Legal Topics
Novelty, Anticipation, Double Patenting, Enabling Disclosure, Sufficiency
Intellectual Property Patent Law Novelty Anticipation Double Patenting Enabling Disclosure Sufficiency

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Parties

Synthon B.V.

Claimant/respondent

SmithKline Beecham PLC

Defendant/appellant

Procedural Posture

Civil Appeal (patent Revocation) / Appeal From Chancery Division to Court of Appeal

Legal Issues

  1. 1 Whether the patent for paroxetine methanesulfonate (PMS) was anticipated by the disclosure in Synthon's earlier patent application under section 2(3) of the Patents Act 1977
  2. 2 Whether the Synthon application made the claimed invention available to the public such that the patent lacked novelty

Ratio Decidendi

The Synthon application did not make available to the public the claimed crystalline form of paroxetine methanesulfonate (PMS) as required by the law of novelty. There were no clear and unmistakable directions in the application to make the claimed form, and the only specific example did not enable the skilled person to produce it. General statements in the application were insufficient to anticipate the patent. Therefore, the patent was not anticipated and the appeal was allowed.

Court Disposition

Appeal allowed; order for revocation set aside; claim for revocation dismissed.

Orders

  • Order of the judge set aside
  • Claim for revocation of the patent dismissed