Case C-388/12: Judgment of the Court (Fourth Chamber) of 14 November 2013 (request for a preliminary ruling from the Tribunale amministrativo regionale per le Marche — Italy) — Comune di Ancona v Regione Marche (Structural Funds — European Regional Development Fund (ERDF) — Financial contribution from a Structural Fund — Criteria for the eligibility of expenditure — Regulation (EC) No 1260/1999 — Article 30(4) — Principle of durability of the operation — ‘Substantial modification’ of an operation — Award of a concession contract without advertisement or a competitive tendering procedure)