31In that regard, it should be borne in mind that a new rule of law applies from the entry into force of the act introducing it, and, while it does not apply to legal situations that have arisen and become definitive under the old law, it does apply to their future effects, and to new legal situations. It is otherwise, subject to the principle of the non-retroactivity of legal acts, only if the new rule is accompanied by special provisions which specifically lay down its conditions of temporal application. In particular, procedural rules are generally taken to apply from the date on which they enter into force, as opposed to substantive rules, which are usually interpreted as applying to situations existing before their entry into force only in so far as it follows clearly from their terms, their objectives or their general scheme that such an effect must be given to them (judgment of 26 March 2015, Commission v Moravia Gas Storage, C‑596/13 P, EU:C:2015:203, paragraphs 32 and 33 and the case-law cited).
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