This was an appeal by Yeda against a ruling that its amendments to a written statement, in support of its claim to joint ownership of a patent registered in the name of Rhône-Poulenc and exclusively licensed to Inclone, should not have been allowed. The grant of a European patent to Rhône-Poulenc, designating the UK among other jurisdictions, was published in the European Patent Bulletin on 27 March 2002. On 26 March 2004, Yeda made a reference to the Comptroller of Patents claiming joint ownership of that patent. On 29 June 2005, Yeda filed the contested statement in which it claimed sole ownership of the patent, seeking joint ownership as an alternative claim. Rhône-Poulenc objected to those amendments on the ground that they had been submitted out of time under the Patents Act 1977, section 37(5). After the Comptroller allowed the amendments, Rhône-Poulenc appealed on the ground that section 37(5) imposed a two-year limitation period for claiming entitlement to a patent that had been granted: this period had expired before Yeda submitted its amendment. Lewison J allowed the appeal, agreeing that the amendments should not have been allowed: since they constituted a new claim to sole ownership, they fell outside the limitation period of section 37(5). Yeda appealed.The Court of Appeal, whose judgment was given by Lord Justice Jacob, dismissed the appeal on the following basis:
* Section 37(5) had to be construed in the light of section 130(7) of the 1977 Act, which required the provisions of the Act to be given the same meaning as the corresponding provisions in the European Patent Convention, the Community Patent Convention and the Patent Co-operation Treaty. This required the courts to read those provisions directly.* Even though the Community Patent Convention never came into force, the court had to construe section 37(5) as having the same meaning as the Community Patent Convention Article 23, which prevented the bringing of entitlement claims more than two years after a patente was granted.* It made no sense for section 130(7) to apply only when the Community Patent Convention came into effect.* The Conventions mentioned in section 130(7) were part of the travaux préparatoires of the 1977 Act and, on conventional principles as to construction, the United Kingdom provisions should be construed so as to have the same meaning as the provisions upon which they were based.* In this case there was a complete statutory bar to Yeda's amendment, which had to be disallowed.