31According to settled case-law, the procedure set out in Article 267 TFEU is an instrument of cooperation between the Court and the national courts, which gives the latter the responsibility to determine, in view of the special features of each case, both the need for a preliminary ruling in order to enable them to give their judgment and the relevance of the questions which they put to the Court (see, to that effect, judgments of 3 April 2014, Weber, C‑438/12, EU:C:2014:212, paragraph 34, and of 2 March 2017, Pérez Retamero, C‑97/16, EU:C:2017:158, paragraph 20 and the case-law cited).
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