German ticketing company CTS Eventim AG is challenging the Competition Commission's (CC) approval of the proposed merger between Live Nation and Ticketmaster in the United Kingdom. Eventim is arguing that the antitrust authorities didn't give its concerns about the merger a fair hearing.

Bremen-based Eventim, the leading European promoter/ticketing operation, said that the CC didn't allow it to "respond intelligently" to the argument for the merger's approval and made incorrect market assessments, according to Bloomberg. Last December, the CC changed its position and cleared the proposed merger.

Live Nation and Ticketmaster have reportedly said that they believe the Competition Appeal Tribunal will uphold the CC's ruling.

Prior to the merger announcement, CTS Eventim signed a 10-year partnership agreement with Live Nation. The deal - signed in 2007 - gave Live Nation a licence to use CTS Eventim's ticketing software in North America and saw CTS take over ticketing for Live Nation in European markets.