54However, it is ultimately for the national court, by taking into account all the factual and legal circumstances of the case before it, to assess whether the amount of the penalty does not go beyond what is necessary to attain the objectives pursued by the legislation in question. As regards the specific application of that principle of proportionality, it is for the national court to determine whether the national measures are compatible with EU law, the competence of the Court of Justice being limited to providing the national court with all the criteria for the interpretation of EU law which may enable it to make such a determination as to compatibility (see, inter alia, to that effect, judgment in Profaktor Kulesza, Frankowski, Jóźwiak, Orłowski, C‑188/09, EU:C:2010:454, paragraph 30 and the case-law cited).
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