The legal case involving Kim Dotcom is set to reach the highest court in the country.
Mr Dotcom's lawyers have filed an application to appeal against a Court of Appeal decision, which ruled the FBI didn't have to hand over evidence against their client, to the Supreme Court.
His lawyers have argued it's vital they see the evidence in order to properly fight their client's extradition charges.
They now have 20 working days to file submissions arguing why the case should be heard and it will be up to the Supreme Court to decide whether to accept their bid or not.
Mr Dotcom is due back at the High Court in Auckland in three weeks on separate legal matters, in which he is seeking compensation from the police and the Government spy agency for the illegal surveillance and raid on his home.