73The fourth paragraph of Article 173 of the Treaty gives individuals the right to challenge inter alia any decision which, albeit in the form of a regulation, is of direct and individual concern to them. The particular objective of that provision is to prevent the Community institutions from being able, merely by choosing the form of a regulation, to preclude an individual from bringing an action against a decision which concerns him directly and individually and thus to make it clear that the nature of a measure cannot be changed by the form chosen (see, inter alia, Joined Cases 789/79 and 790/79 Calpak and Società Emiliana Lavorazione Frutta v Commission [1980] ECR 1949, paragraph 7, and Case T-298/94Roquette Frères v Council [1996] ECR II-1531, paragraph 35).