Judgment of the Court (Second Chamber) of 30 January 2025.#Trenitalia SpA v Autorità Garante della Concorrenza e del Mercato.#Request for a preliminary ruling from the Tribunale amministrativo regionale per il Lazio.#Reference for a preliminary ruling – Consumer protection – Unfair business-to-consumer commercial practices in the internal market – Directive 2005/29/EC – Measures intended to combat such practices – Articles 11 and 13 – Procedures for infringement of the rules of consumer law – Compliance with a reasonable time limit – National legislation requiring the national authority to issue a statement of objections within a time limit of 90 days of knowledge of the essential elements of the infringement – Automatic annulment in its entirety of the decision of the national authority in the event of failure to comply with that time limit – Principle ne bis in idem – Revocation of the power to initiate new infringement proceedings in respect of the same facts – Principle of effectiveness – Rights of defence of undertakings.#Case C-510/23.