AD Article
Appeal against an INPI decision on patent opposition: insights from the Paris Court of Appeal on the assessment of novelty and the admissibility of new subsidiary requests for amendment of the patent
The Paris Court of Appeal has just handed down its second ruling on an appeal against an INPI decision ruling on opposition to a French patent . This judgment of 9 April 2025 was handed down in the case of Tinnus (patentee) v Koopman (opponent) . It provides two lessons of interest to patent litigation practitioners.