Opinion of Advocate General Campos Sánchez-Bordona delivered on 11 March 2021.#XK.#Request for a preliminary ruling from the Procura della Repubblica di Trento.#Reference for a preliminary ruling – Article 267 TFEU – Definition of ‘court or tribunal of a Member State’ – Criteria – Procura della Repubblica di Trento (Public Prosecutor’s Office, Trento, Italy) – Inadmissibility of the request for a preliminary ruling.#Case C-66/20.