Trends Publishing, which had its taxypayer grant cancelled, is suing the Government's Callaghan Innovation for allegedly unlawfully suspending the funding.
Trends, which is based in Ellerslie and associated with home and design publication Trends Magazine, is seeking compensation from Callaghan.
Callaghan Innovation last year suspended and later cancelled a taxpayer research & development grant given to Trends. It also said it had referred the matter to the Serious Fraud Office (SFO).
The firm received $332,966 from Callaghan before the grant was put on hold.
Trends has now hit back and today said it had launched High Court action against Callaghan for the allegedly "unlawful suspension and later termination" of the grant.