Sonae and Crown Research Institute Scion of New Zealand signed the agreement for the extension.
Sonae, which has held the European licence for two years, said the extension to North America was a logical step.
The Woodforce technology binds wood fibre into pellet form to produce "dice" which can then be fed directly into conventional extruders, from which the compound can be used in injection moulding as profile extrusion for processing as fibre-reinforced plastics.
"Woodforce has been designed for efficient mass production in an existing MDF plant," said Christophe Chambonnet, Woodforce’s global manager.
He said the mechanical performance, industrial friendliness and environmental benefits of the product had convinced many customers.
"Our ability to deliver the same product, with the same specification and quality on each continent is the global plan that makes Woodforce a superior natural fibre option," said Mr Chambonnet.
Scion and Sonae have also agreed a timeframe to access the Asian market.
