16It is settled case-law that, in the absence of EU rules in the matter, it is for the internal legal order of each Member State to designate the courts and tribunals having jurisdiction and to lay down the detailed procedural rules governing actions for safeguarding in full rights which individuals derive from EU law, provided that such rules are not less favourable than those governing similar domestic actions (principle of equivalence) and that they do not render virtually impossible or excessively difficult the exercise of the rights conferred by EU law (principle of effectiveness) (see Joined Cases C-114/95 and C-115/95 Texaco and Olieselskabet Danmark [1997] ECR I-4263, paragraph 41; Case C-62/00 Marks & Spencer [2002] ECR I-6325, paragraph 34; and Case C-445/06 Danske Slagterier [2009] ECR I-2119, paragraph 31).
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