Res judicata prevails over the retroactive and absolute effect of the patent revocation
Mr X was ordered to pay damages for the infringement of a French patent No. 87‑03865, relating to a massage device, by a decision of the Cour d’Appel of Limoges on 10 September 2001. In the absence of an appeal on a point of law, this decision became irrevocable. However, in a separate action, the same patent was subsequently…