Van Gend en Loos v Nederlandse Administratie der Belastingen

Van Gend en Loos v Nederlandse Administratie der Belastingen (1963) Case 26/62 was a landmark case of the European Court of Justice which established that provisions of the Treaty Establishing the European Economic Community were capable of creating legal rights which could be enforced by both natural and legal persons before the courts of the Community's member states. This is now called the principle of direct effect.

Source: Wikipedia — Van Gend en Loos v Nederlandse Administratie der Belastingen (CC BY-SA 4.0)