"We have now been to three courts each with a different legal analysis - one of which thought that there was no copyright infringement at all". This new ruling - which still isn't a ruling on guilt - states that the fraud aspect does qualify them for extradition and that the U.S. court should get to see him in the ample flesh for a hearing.
Earlier, his appeal was rejected consecutively by New Zealand's North Shore District Court and the High Court.
Megaupload was once one of the internet's most popular sites.
The Court of Appeal has confirmed that the US has a range of extradition options, for which the country has tendered sufficient evidence to support, according to a summary of the judgment provided by the court.
New Zealand's Court of Appeal on Thursday upheld earlier court rulings that the men were eligible to be handed over to US authorities.
"We will seek review with the NZ Supreme Court", he tweeted. "I will appeal to the Supreme Court".
American killed in Bahamas boat explosion ID'd as Tennessee woman
He said both of his sisters, Stefanie and Brooke , were on the boat with their mother and stepfather Stacey and Paul Bender . Sheila Jones and John Inman were named as other passengers on the boat, but they did not suffer serious injuries.
Dotcom can take his appeal to the Supreme Court, New Zealand's final avenue of appeal, but will need compelling new evidence that he was facing a miscarriage of justice.
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.
The raid resulted in the 13 charges Dotcom and the group face, which include racketeering conspiracy, conspiring to commit copyright infringement and money laundering, and criminal copyright infringement. He changed his last name to Dotcom in 2012.
He said the court's interpretation of the relevant copyright provisions can not be right, and the precedent set has ramifications in New Zealand outside his case.
Mr Dotcom estimates he has spent 165 days in court and spent $40 million in legal fees on the case.
Was all of the above done to me and my family against the law?