Analysis of conflicting goals in competition law and of priorities of competition policy deciding on ranking of competing goals;out-of-competition points of view in merger assessment. Analysis of incentives and forms of mergers.The notion of gaining control over another competitor. Detailed analysis of the change of substantive test used in merger assessment and implications of so called "more economic approach" in competition law. Merger specific efficiences and the approach of competition policy to their hierarchy.The impact of new technologies on competition policy in the merger area. Thorough analysis of development of merger control in the Czech Republic and its comparison with the EU.Topical legally important challenges of the economic crisis to competition policy and antitrust.