44Where they entertain doubts as to whether the measure at issue constitutes State aid within the meaning of Article 107(1) TFEU or as to the validity or interpretation of the decision to initiate the formal examination procedure, national courts may seek clarification from the Commission and, in accordance with the second and third paragraphs of Article 267 TFEU, as interpreted by the Court, they may or must refer a question to the Court for a preliminary ruling (see, to that effect, as regards requests for preliminary rulings on the validity of State aid, Case C-222/04 Cassa di Risparmio di Firenze and Others [2006] ECR I-289, paragraphs 72 to 74).
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