"Without this, the case is a dead duck," said Tony Gavigan, diretor of Joint Action Funding Limited. "The long fight would be over."
In 2014, the Wellington High Court's Justice Robert Dobson cleared the former Feltex directors of misleading investors in its prospectus, but did note there were some criticisms to be made of the offer documents.
Houghton lodged an appeal with the Court of Appeals which was dismissed in October of last year.
Within a year of NZX listing, Feltex stock was virtually worthless, thanks to a series of warnings that the company would miss its forecasts. Receivers were appointed in September 2006. Houghton had sued the former Feltex directors, owners and sale managers in a representative action on behalf of 3,639 former shareholders seeking $185 million over what he said was a misleading 2004 prospectus.
Rival Australian carpet maker Godfrey Hirst ended up buying the assets.
The action alleges that the company's prospectus in 2004 - the year it floated - contained information that was misleading or wrong, or omitted to make information available that would have affected investment decisions.