Who may bring an action for patent revocation? Such is the fundamental question which has been submitted to the Tribunal de Grande Instance of Paris in a case whose factual circumstances made it very interesting. On 13 September 2010, Omnipharm Limited served a summons on Merial to appear before the Tribunal de Grande Instance of Paris to…

On 15 March 2011, in a dispute opposing the companies E.I Du Pont de Nemours and Merck and companies Mylan and Qualimed, the Cour d’Appel of Paris confirmed the order handed down on 12 February 2010 by the President of the Tribunal de Grande Instance of Paris, subject-matter of a previous post. The American company E.I. Du Pont de…

The  Supreme Court held that the US doctrine of file wrapper estoppel is not applicable under the EPC. According to the Court only Article 69 of the EPC and the Protocol on its interpretation should be applied when determining the scope of a claim. The modifications of the patent application during prosecution cannot be taken…

Daiichi Sankyo (hereinafter referred to as “Daiichi”) was the holder, for a drug whose active principle was pravastatine, of a supplementary protection certificate (SPC) granted on 26 August 1992 which expired on 10 August 2006. This company claimed that Sandoz had, since July 2006, manufactured and put on the French market a generic drug of pravastatine, thereby infringing the exclusive…

In a judgment issued on September 28, 2010, the Court of First Instance of Paris held that a dosage regime is effectively a method of treatment and is, as such, excluded from patentability in view of Article 53c of EPC 2000. In this particular case, the use of finasteride for the treatment of androgenic alopecia…

The company governed by the laws of Switzerland, Novartis AG, is the holder of patent EP 0 443 983 entitled “Acyl compounds”, whose subject-matter is a group of antihypertensive compounds, including valsartan, pharmaceutical preparations containing them and processes for the preparation of these compounds. , This patent, filed on 12 February 1991, was to have expired on 12 February 2011. However, Novartis…

H. Lundbeck A/S (hereinafter referred to as Lundbeck) is the holder of European patent EP 0 347 066 entitled “new enantiomers and their isolation”, which designates France and was filed on 1 June 1989; it claims priority of a British patent dated 14 June 1988. The invention relates to the two new enantiomers of the antidepressant drug Citalopram and the use of…

By a judgement dated 28 September 2010, the Tribunal de Grande Instance of Paris held that claims 1, 2 and 3 of the French designation of Merck & Co. Ltd’s Patent EP 0 724 444 were invalid for being excluded from the scope of patentability in accordance with the provisions of Article 53(c) EPC 2000 (former Article 52  (4) EPC 1973). The court held that the invention the subject-matter of main claim 1 was only a new dosage regime ranging from 0.05 to 1 mg) of an already known compound (finasteride) in an already known therapeutic application (the treatment of hyperandrogenic conditions and especially the treatment of androgenic alopecia). A mere new dosage regime is not a second medical use but a therapeutic method excluded from patentability pursuant to Article 53  (c) EPC 2000.

On the occasion of a dispute opposing the Institut Pasteur and two Chiron companies, the French Cour de Cassation rendered on 14 December 2010 an interesting decision which confirms the existing case law on three points : the “file wrapper estoppel” theory, the contributory infringement and the infringement by equivalence.