Preliminiary ruling cases before The court of justice of the European Communities

This study is dealing with the Preliminiary Ruling Cases Before the Court Of Justice of The European Communities; a part of European Union?s legal institutional structure; and examining the importance and sui-generis character of this procedure. In the field of International Relations, researches can be carried out in institutional - descriptive and theoretical ways. In this study institutional - descriptive way is used.The legal institutional structure of The European Union differs from the institutional structures of the classical International Organizations and national states. The differences obviously major on the procedure of preliminiary ruling and the participation of the Court of Justice of the European Communities to the decision - making procedures of the Courts and tribunals of The Member States. Especially, with the help of this privileged procedure, The Court of Justice of the European Communities has an active part in the uniform application of the Comminuty Law. This thesis aims to examine the Court of Justice of the European Communities in the context of preliminiary ruling with using the primary sources of the Union.