58As the Court has already pointed out, the GDPR does not contain any provision relating to the assessment of the damages due under the right to compensation enshrined in Article 82 of that regulation. Therefore, for the purposes of that assessment, the national courts must, in accordance with the principle of procedural autonomy, apply the domestic rules of each Member State relating to the extent of monetary compensation, provided that the principles of equivalence and effectiveness of EU law, as defined by the settled case-law of the Court, are complied with (see, to that effect, judgments of 21 December 2023, Krankenversicherung Nordrhein, C‑667/21, EU:C:2023:1022, paragraphs 83 and 101 and the case-law cited, and of 25 January 2024, MediaMarktSaturn, C‑687/21, EU:C:2024:72, paragraph 53).
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