88It follows from the case-law that the provision which forms the legal basis of an act and empowers the Union institution to adopt the act in question must be in force at the time when the act is adopted (see, to that effect, Case C-269/97 Commission v Council [2000] ECR I-2257, paragraph 45) and that procedural rules are generally held to apply from the time of their entry into force (see, to that effect, Joined Cases 212/80 to 217/80 Meridionale Industria Salumi and Others [1981] ECR 2735, paragraph 9, and Case C-201/04 Molenbergnatie [2006] ECR I-2049, paragraph 31).
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