Judgment of the Court (First Chamber) of 27 November 2025.#Mikroregion Porta Bohemica v Odvolací finanční ředitelství.#Reference for a preliminary ruling – Protection of the European Union’s financial interests – Regulation (EC, Euratom) No 2988/95 – Concept of ‘irregularity’ – Article 1(2) – Limitation periods – Article 3 – Starting point and duration of the limitation periods – Project co-financed through EU resources.#Case C-539/24.