Advocate General (AG) Colomer has made bold suggestions to the European Court of Justice (ECJ) in his opinion on the ECJ’s jurisdiction to interpret international agreements concluded by both the EU and its Member States (“mixed” agreements, such as TRIPS). The ECJ has been reluctant to interpret those parts of “mixed” agreements that do not fall under EU powers and in areas where the EU has not yet legislated, such as patents. The AG, however, recommended that the ECJ abandon its complex assessments of which parts of these agreements fall within EU jurisdiction, and declare that it has jurisdiction to interpret all parts of such agreements. This conclusion should be based on the fact that such agreements are integrated into the EU legal system and therefore should be interpreted uniformly throughout the EU. The AG left open the possibility of World Trade Organisation (WTO) provisions becoming directly applicable to the benefit of individuals. He suggested that direct effect should depend on (i) the provision’s terms, object and nature, and (ii) the existence of a clear, precise and unconditional obligation imposed on the Member States. If the AG’s opinion is embraced by the ECJ, it will open the door to interpretation of various aspects of WTO Agreements, notably the interpretation of the way the TRIPS Agreement applies to patents.