The move effectively launches the race to secure the UMP ticket to stand in the 2017 presidential election, with ex-president Nicolas Sarkozy, and former prime ministers Francois Fillon and Alain Juppe all seen waiting in the wings.
The party's finances have been the subject of a preliminary legal inquiry after allegations that an events company hired for Sarkozy's 2012 re-election bid was ordered by party officials to produce millions of euros' worth of fake invoices to cover campaign cost over-runs.
Cope, who was party general secretary at the time, has repeatedly stated he had no knowledge of any wrongdoing. REUTERS