Judgment_paragraph 48 · T & L Sugars Ltd and Sidul Açúcares, Unipessoal Lda v European Commission (C-456/13 P)

48In that regard, it must be borne in mind that where a national court or tribunal considers that one or more arguments for invalidity of a European Union act, put forward by the parties or, as the case may be, raised by it of its own motion, are well founded, it is incumbent upon it to stay proceedings and to make a reference to the Court for a preliminary ruling on the act’s validity, the Court alone having jurisdiction to declare a European Union act invalid (judgments in IATA and ELFAA, C‑344/04, EU:C:2006:10, paragraphs 27 and 30 and the case law cited, and Inuit Tapiriit Kanatami and Others v Parliament and Council, C‑583/11 P, EU:C:2013:625, paragraph 96).