The German national, who is accused of netting millions from his file sharing Megaupload empire, faces charges of racketeering, fraud and money laundering in the US, carrying jail terms of up to 20 years.

Dotcom had asked the court to overturn two previous rulings that the Internet mogul and his three co-accused be sent to America to face charges.

Instead, a panel of three judges backed the FBI-led case, which began with a raid on Dotcom's Auckland mansion in January 2012 and has dragged on for more than six years.