M Elvira Méndez-Pinedo, Antoni Abat i Ninet
1. Effectiveness ( effet utile in French) is a key concept of the European constitutional legal order. It is now a doctrine very well established in the European Union’s (EU) supranational legal order created by the case law of its Court of Justice (ECJ) in Luxembourg, in seminal rulings dating back to the 1960s and stretching over five consecutive decades (see European Union, Court of Justice and General Court ; supranational constitutional courts ). The concept has become very sophisticated and has been well studied and commented on by EU law scholarship. All 28...