Patents. Value and burden of proof. “Ultra petita” incongruity. Articles 6.3, 1214, 1228 and 1253 of the Spanish Civil Code (C.C.). Article 24.2 of the Spanish Constitution (CE). Articles 359 and 281.3 of the Spanish Civil Procedure Law (LEC). Articles 1, 5, 7, 13, and 2 of the Spanish Unfair Competition Law. Article 61.2 of the Spanish Patent Law.