Judgment of the Court (Grand Chamber) of 8 April 2025.#Criminal proceedings against I.R.O. and F.J.L.R.#Request for a preliminary ruling from the Juzgado Central de Instrucción n° 6 de Madrid.#Reference for a preliminary ruling – European Public Prosecutor’s Office – Regulation (EU) 2017/1939 – Article 42(1) – Procedural measures intended to produce legal effects vis-à-vis third parties – Judicial review, by national courts, in accordance with the requirements and procedures provided for in national law – Scope – Witness summons – National law not permitting direct judicial review of such a measure – Second subparagraph of Article 19(1) TEU – Articles 47 and 48 of the Charter of Fundamental Rights of the European Union – Principles of equivalence and effectiveness.#Case C-292/23.