Opinion of Advocate General Wahl delivered on 13 September 2018.

Presidenza del Consiglio dei Ministri v Fallimento Traghetti del Mediterraneo SpA.#Request for a preliminary ruling from the Corte suprema di cassazione.#Reference for a preliminary ruling – State aid – Existing aid and new aid – Classification – Regulation (EC) No 659/1999 – Article 1(b)(iv) and (v) – Principles of legal certainty and protection of legitimate expectations – Applicability – Subsidies granted before the liberalisation of a market initially closed to competition – Action for damages against the Member State brought by a competitor of the beneficiary company.#Case C-387/17.