40Nevertheless, that fact alone cannot alter the above conclusion. It is indeed settled case-law of the Court that, in the absence of EU rules in the field, it is for the national legal system of each Member State to designate the courts and tribunals having jurisdiction and to lay down the detailed procedural rules governing actions for safeguarding rights which individuals derive from EU law, provided that such rules are not less favourable than those governing similar national actions (principle of equivalence) and that they do not render practically impossible or excessively difficult the exercise of rights conferred by EU law (principle of effectiveness).
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.