22In the absence of EU legislation, the detailed rules governing procedures for safeguarding the rights which individuals derive from EU law fall within the domestic legal system of the Member States, by virtue of the principle of procedural autonomy of those States. However, those rules must be no less favourable than those governing similar domestic actions (principle of equivalence); nor may they be framed in such a way as to make it in practice impossible or excessively difficult to exercise the rights conferred by EU law (principle of effectiveness) (judgment of 26 June 2019, Addiko Bank, C‑407/18, EU:C:2019:537, paragraph 46 and the case-law cited).
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