Council Regulation (EC) No 139/2004 of 20 January 2004 on the control of concentrations between undertakings (the EC Merger Regulation) 20. January 2004 You need to be logged in to view this content. Please Log In. Not a Member? Join Us Posted in CELIS-CONTENT and tagged 2004, CELIS-CONTENT-Government, CELIS-CONTENT-Legislation, Company Law, EU, Europe