Kim Dotcom has been given court permission to ask for further documents from government agencies to bolster his claim for compensation.
The internet businessman wants to use the evidence in his $6 million claim against police and the Government Communications and Security Bureau over the raid on his Coatesville mansion near Auckland in January 2012.
In a decision released on Wednesday, Justice Winkelmann said Mr Dotcom could discover a small number of documents held by police, the GCSB, and the Department of Prime Minister and Cabinet.
However, she ruled that those documents could only be used in the compensation case, not Mr Dotcom's extradition hearing for criminal charges he faces in the United States.
Justice Winkelmann also ruled that Mr Dotcom can request notes and research material held by journalist David Fisher, who published a book on the case in 2013.
That would then allow the Crown to request access to those notes to use as evidence.