European Coal and Steel Community Court of Justice. These would ultimately form the blueprint for today's European Commission, European Parliament, the Council of the European Union and the European Court of Justice. The ECSC stood as a model for the communities set up after it by the Treaty of Rome in 1957, the European Economic Community and European Atomic Energy Community, with whom it shared its membership and some institutions. The 1967 Merger (Brussels) Treaty led all of ECSC's institutions to merge into the European Economic Community, but the ECSC retained its own independent legal personality. In 2002, the Treaty of Paris expired and the
European Economic Community Community", continuing to follow the supranational structure of the EEC. The EEC institutions became those of the EU, however the Court, Parliament and Commission had only limited input in the new pillars, as they worked on a more intergovernmental system than the European Communities. This was reflected in the names of the institutions, the Council was formally the "Council of the "European Union"" while the Commission was formally the "Commission of the "European Communities"". However, after the Treaty of Maastricht, Parliament gained a much bigger role. Maastricht brought in the codecision procedure, which gave it equal legislative power with the