Original sentence: Due to his unconventional business practices and methods of financing and his sometimes spectacular transactions Kovats has repeatedly been accused of risky, unfair or even criminal activity
Edited sentence: 2007 Kovats tried to take over the Serbian copper producer RTB Bor.Cumerio wanted to reject A-TEC's bid, preferring NA.Due to his unconventional business practices and methods of financing and his sometimes spectacular transactions Kovats had repeatedly been accused of risky, unfair or even criminal activity.However, before NA could could complete the takeover, Kovats blocked the transaction by increasing his holding in Cumerio and in NA.In 2002 the takeovers of the Continental AG's Semperit plant the Vienna Grundig-Werke failed.In 2003–04 Kovats caused a stir, together with partner Ronny Pecik, with the purchase of nearly 20 percent of the shares in the VA-technology industry group and the lucrative but controversial resale of those shares to Siemens AG.In 2005 Kovats was involved, again with partner Pecik, with the Swiss company Unaxis (now OC Oerlikon).In 2005 he tried to buy Bank Burgenland in the Austrian state of Burgenland.In 2007 Kovats was involved in a takeover battle with the copper producer Norddeutsche Affinerie (NA) for the Belgian company Cumerio.In early 2006 he withdrew from the Board of Directors of the group.In return Pecik, apparently due to differences with Kovats, from A-TEC.Kovats has not always been completely successful:.The negotiations are ongoing.The sale, however, was rejected by Parliament, and a court review demanded, whereupon Kovats withdrew his bid along with other proposed investments in the south of Burgenland and Spielberg, Styria.The stalemate continues