Judgment of the Court (Tenth Chamber) of 15 January 2026.#Imballaggi Piemontesi Srl v Autorità Garante della Concorrenza e del Mercato (AGCM).#Request for a preliminary ruling from the Consiglio di Stato.#Reference for a preliminary ruling – Competition – Article 101 TFEU – Prohibition of restrictive practices – Procedures for infringement of the rules of competition law conducted by the national competition authorities – Compliance with a reasonable time limit – Time limit for closure of the investigation stage of the infringement proceedings – National legislation allowing the national competition authority unilaterally to postpone that time limit on account of circumstances which lead to an extension of the subject matter of those proceedings or of the number of undertakings concerned – General principle of the right to good administration – Article 47 of the Charter of Fundamental Rights of the European Union – Principle of effective judicial protection – Rights of defence of undertakings – Principle of effectiveness.#Case C-588/24.