The Protocol concerning the Interpretation by the EC Court of Justice of the Convention of 27 September 1968, on Jurisdiction and the Enforcement of Judgments in civil and commercial matters (hereinafter referred to as the Protocol on Interpretation) came into force on 1 September 1975 between the six original Member States of the EEC (i.e., Belgium, France, Italy, Luxembourg, the Netherlands and the Federal Republic of Germany). On the basis of this Protocol the European Court of Justice can give preliminary rulings on the interpretation of the above-mentioned Convention, of the Protocol Annex to this Convention and also of the Protocol on Interpretation itself.