Really -
European Union or Communities?
Since 1 December 2009 “European Union” has been the official name in the WTO as well as in the outside world. Before that, “European Communities” was the official name in WTO business for legal reasons, and that name continues to appear in older material.
The EU is a WTO member in its own right as are each of its 28 member states — making 29 WTO members altogether.
While the member states coordinate their position in Brussels and Geneva, the European Commission — the EU’s executive arm — alone speaks for the EU and its members at almost all WTO meetings and in almost all WTO affairs. For this reason, in most issues, WTO materials refer to the “EU” (or previously the legally-official “EC”).