Case C-582/22,  Die Länderbahn and Others: Judgment of the Court (Fourth Chamber) of 7 March 2024 (request for a preliminary ruling from the Verwaltungsgericht Köln – Germany) – Die Länderbahn GmbH DLB, Prignitzer Eisenbahn GmbH, Ostdeutsche Eisenbahn GmbH v Federal Republic of Germany (Reference for a preliminary ruling – Rail transport – Directive 2012/34/EU – Access to railway infrastructure – Charges – Article 56 – Single national regulatory body for the railway sector – Powers – Review of the infrastructure charges whose period of application has expired – Power to declare invalidity with effect ex tunc and to order the reimbursement of charges)