39The Court has consistently held that, in the absence of EU rules governing the matter, it is for every Member State to lay down the detailed rules of administrative and judicial procedures for safeguarding rights which individuals derive from EU law. Those detailed procedural rules must, however, be no less favourable than those governing similar domestic actions (principle of equivalence) and must not render impossible in practice or excessively difficult the exercise of rights conferred by EU law (principle of effectiveness) (see judgment in Club Hotel Loutraki and Others, C‑145/08 et C‑149/08, EU:C:2010:247, paragraph 74 and the case-law cited).
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