48With regard, second, to the principle of effectiveness, it is settled case-law that the question as to whether a national provision makes the application of EU law impossible or excessively difficult must be analysed by reference to the role of that provision in the procedure, its progress and its special features, viewed as a whole, before the various national bodies. In that context, it is necessary to take into consideration, where relevant, the principles which lie at the basis of the national legal system, such as the protection of the rights of the defence, the principle of legal certainty and the proper conduct of the proceedings (see, to that effect, in particular, judgments of 1 October 2015, ERSTE Bank Hungary, C‑32/14, EU:C:2015:637, paragraph 51, and of 18 February 2016, Finanmadrid EFC, C‑49/14, EU:C:2016:98, paragraphs 43 and 44).
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