Judgment of the Court (Sixth Chamber) of 30 October 2025.#A v B.#Request for a preliminary ruling from the Riigikohus.#Reference for a preliminary ruling – Judicial cooperation in civil and commercial matters – Jurisdiction and recognition and enforcement of judgments in civil and commercial matters – Regulation (EU) No 1215/2012 – Article 25(1) – Agreement conferring jurisdiction – Agreement null and void as to its substantive validity under the law of the Member State of the court seised of the case