Kim Dotcom's extradition might "never occur", says a music company challenging delays to a copyright legal case.
Microhits has asked the United States courts to stop delaying its case against Megaupload until the extradition issue is resolved - because it might never happen.
New papers filed with the US district court in Virginia say the extradition is "a mere possible future event but indeed an event which may in fact never occur".
Microhits filed its lawsuit against Megaupload after the FBI-inspired raid which saw Mr Dotcom and three business partners arrested on criminal copyright charges.
The FBI criminal case sent shockwaves through the filesharing world with the Megaupload websites taken over by the US and shut down. The Microhits case followed a few months later with a more usual civil court bid over copyright infringement.