35Since the FEU Treaty abolished the reasoned opinion stage in infringement proceedings under Article 260(2) TFEU, the reference date for assessing whether there has been an infringement for the purpose of Article 260 TFEU is the date of expiry of the period prescribed in the letter of formal notice issued in accordance with the first subparagraph of Article 260(2) (Case C‑610/10 Commission v Spain EU:C:2012:781, paragraph 67, and Case C‑576/11 Commission v Luxembourg EU:C:2013:773, paragraph 29).
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