62Furthermore, that question – whether a regulatory act entails implementing measures – should be assessed by reference to the position of the person pleading the right to bring proceedings under the third limb of the fourth paragraph of Article 263 TFEU. It is therefore irrelevant whether the act in question entails implementing measures with regard to other persons (judgments of 19 December 2013, Telefónica v Commission, C‑274/12 P, EU:C:2013:852, paragraph 30, and of 6 November 2018, Montessori, C‑622/16 P to C‑624/16 P, EU:C:2018:873, paragraph 61).