Case C-146/13: Judgment of the Court (Grand Chamber) of 5 May 2015 — Kingdom of Spain v European Parliament and Council of the European Union (Action for annulment — Implementing enhanced cooperation — Creation of unitary patent protection — Regulation (EU) No 1257/2012 — First paragraph of Article 118 TFEU — Legal basis — Article 291 TFEU — Delegation of powers to bodies outside the European Union — Principles of autonomy and uniform application of EU law)