Portugal: Arbitration court can decide patent validity, Court of Appeal of Lisbon, 1356/13.OYRLSB.L1-7, 13 January 2015
Arbitration courts have competence to declare the invalidity of an allegedly infringed patent where the question is raised as an incidental defence. The decision only has inter partes effects. A full summary of this case has been published on Kluwer IP Law.