State Act

Portuguese Civil Code, 1867

Article 2503 – Requisites of Res Judicata – Res judicata may be invoked as a means of proof only upon satisfaction of following requisites:- 1. The identity, of the object, over which the judgment was pronounced; 2. The identity of right or cause of action; 3. The identity of the parties and their juridical capacity. § Sole paragraph – However, Res judicata on questions of capacity, filiation or marriage, shall constitute proof against any other person, provided the lawful opponent has been heard.