30In that regard, it should be borne in mind that, according to settled case-law of the Court, the procedure laid down in Article 267 TFEU is an instrument for cooperation between the Court of Justice and the national courts. It follows that it is for the national courts alone which are seised of the case and which are responsible for the judgment to be delivered to determine, in view of the special features of each case, both the need for a preliminary ruling in order to enable them to deliver judgment and the relevance of the questions which they put to the Court. Consequently, where questions submitted by national courts concern the interpretation of a provision of EU law, the Court is, in principle, obliged to give a ruling (judgment of 28 March 2019, Verlezza and Others, C‑487/17 to C‑489/17, EU:C:2019:270, paragraphs 27 and 28 and the case-law cited).
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