The legal effects of international treaty in domestic law have been controversial. The issue concerns, first of all, the subjects of the legal relations in terms of international law, secondly, the relationships between international law and national law especially on the question of validity and hierarchy of legal norms. European Community or Union is not a State in international law, however it is competent to enter in relations with other states and international organizations. Consequently, the same issue is present in the Community. The European court of Justice has repeatedly declared that the WTO agreements have no direct effect and are not capable of conferring legal rights on individuals so as to challenge the legality of the Community measures. However, association agreements concluded between Community and non-Member States are treated as constituting an integral part of Community law, they are directly applicable before national courts and may confer a legal right upon individuals. The reasons of the Court in distinguishing the WTO agreements from other international agreements are based on the purpose and structure of the agreements concerned. The study of the case law of the court in the paper leads to a conclusion that the Court makes a distinction between the concept of direct application and that of direct effect in relation to international agreements. Methodologically, the Court is relying on the theory of transformation similar to the practices of Common Law courts of England when they are dealing with treaty.