Tribunal Constitucional (Spanish Constitutional Court), Opinion 1/2004 of 13 December 2004, on the Treaty establishing a Constitution for Europe - Common Market Law Review View Tribunal Constitucional (Spanish Constitutional Court), Opinion 1/2004 of 13 December 2004, on the Treaty establishing a Constitution for Europe by - Common Market Law Review Tribunal Constitucional (Spanish Constitutional Court), Opinion 1/2004 of 13 December 2004, on the Treaty establishing a Constitution for Europe 42 4 Common Market Law Review