Simon Fuller, the creator of the "Idol" TV property, has launched legal action against his former collaborator Simon Cowell. Fuller's London-based production company 19 TV says it sued Cowell, his pro

Simon Fuller, the creator of the "Idol" TV property, has launched legal action against his former collaborator Simon Cowell. Fuller's London-based production company 19 TV says it sued Cowell, his production firms Simco and Syco, and co-producer Fremantle Media for copyright infringement and breach of contract over the new "X Factor" TV talent series.

Although details for "X Factor" were unveiled in April, Fuller is understood to have taken legal measures only after seeing the first episode, which was broadcast Sept. 4 on national commercial network ITV1.

A spokesperson for 19 TV says the company "will be pressing for a speedy trial to resolve the matters as swiftly as is possible."

In a statement issued Friday by Fremantle Media on behalf of itself and Cowell, the company denied the claims made in the writ and vowed to defend "rigorously" any legal action in court. "The X Factor is a different format to Pop Idol," it says.

A long-time A&R executive at BMG Music in the United Kingdom, Cowell's celebrity rose during his turn as an abrasive judge on "Pop Idol" and the U.S. spin-off "American Idol". He also plays a focal role in "X Factor" as one of its talent judges. ITV struck a 2-year exclusive deal to broadcast the program.