Opinion of Advocate General Hogan delivered on 12 November 2020.#TKF v Department of Justice for Northern Ireland.#Request for a preliminary ruling from the Court of Appeal in Northern Ireland.#Reference for a preliminary ruling – Judicial cooperation in civil matters – Recognition and enforcement of decisions in matters relating to maintenance obligations – Regulation (EC) No 4/2009 – Temporal scope – Article 75 – Decisions given by a court of a Member State prior to accession to the European Union.#Case C-729/19.