Key facts of the case:

Request for a preliminary ruling from the Oberster Gerichtshof.

Reference for a preliminary ruling — Principles of EU law — Sincere cooperation — Procedural autonomy — Principles of equivalence and effectiveness — National legislation laying down a remedy allowing criminal proceedings to be reheard in the event of infringement of the European Convention for the Protection of Human Rights and Fundamental Freedoms — No obligation to extend that procedure to cases of alleged infringement of the fundamental rights enshrined in EU law.

Outcome of the case:

On those grouds, the Court (Grand Chamber) hereby rules:

EU law, in particular the principles of equivalence and effectiveness, must be interpreted as meaning that a national court is not required to extend to infringements of EU law, in particular to infringements of the fundamental right guaranteed by Article 50 of the Charter of Fundamental Rights of the European Union and Article 54 of the Convention implementing the Schengen Agreement of 14 June 1985 between the Governments of the States of the Benelux Economic Union, the Federal Republic of Germany and the French Republic on the gradual abolition of checks at their common borders, signed at Schengen (Luxembourg) on 19 June 1990 and which entered into force on 26 March 1995, a remedy under national law permitting, only in the event of infringement of the European Convention for the Protection of Human Rights and Fundamental Freedoms, signed in Rome on 4 November 1950, or one of the protocols thereto, the rehearing of criminal proceedings closed by a national decision having the force of res judicata.