Tightening the Grip on the Application of Article 81 EC Treaty: The European Court of Justice Guards Its Province - Legal Issues of Economic Integration View Tightening the Grip on the Application of Article 81 EC Treaty: The European Court of Justice Guards Its Province by - Legal Issues of Economic Integration Tightening the Grip on the Application of Article 81 EC Treaty: The European Court of Justice Guards Its Province 37 1 Legal Issues of Economic Integration