67It is inherent in that complete system of legal remedies and procedures that persons bringing proceedings must, when an action is brought before a national court or tribunal, have the right to challenge the legality of provisions contained in European Union acts on which a decision or national measure adopted in respect of them is based, pleading the invalidity of that decision or measure, in order that the national court or tribunal, having itself no jurisdiction to declare such invalidity, consults the Court on that matter by means of a reference for a preliminary ruling, unless those persons unquestionably had the right to bring an action against those provisions on the basis of Article 263 TFEU and failed to exercise that right within the period prescribed (see, to that effect, judgments of 15 February 2001, Nachi Europe, C‑239/99, EU:C:2001:101, paragraphs 35 and 36, and of 29 June 2010, E and F, C‑550/09, EU:C:2010:382, paragraphs 45 and 46).
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.