The European Commission in 1998 issued a notice stating which types of joint ventures would be treated as mergers for Competition Law purposes. Commission Notice on the concept of full-function joint ventures under Council Regulation (EEC) No. 4064/89 on the control of concentrations between undertakings 1998 OJ C 66/01. This a key document that should be reviewed whenever large companies are setting up a joint venture in the European Union and EEA or which would have substantial effects in the EU or EEA.