European Union – Freedom of movement. The Court of Justice of the European Union gave a preliminary ruling, deciding that EU law, in particular the principles of equivalence and effectiveness, should be interpreted as not precluding, in circumstances such as those in the dispute in the main proceedings, a situation where there was no possibility for a national court to revise a final decision of a court or tribunal made in the course of civil proceedings when that decision was found to be incompatible with an interpretation of EU law upheld by the Court after the date on which that decision had become final, even though such a possibility did exist as regards final decisions of a court or tribunal incompatible with EU law made in the course of administrative proceedings.