The prepared foods giant is trying to prevent The Cornish Pasty Association’s PGI bid just weeks after failing in its legal battle to date with the Melton Mowbray Pork Pie Association.
Pasty association bosses were expecting a decision from Defra last month as to whether it would support its campaign.
The group, which has 42 members ranging from artisan producers to major supplier Ginsters, claims that only those pasties made in Cornwall to traditional recipes should be allowed to be called Cornish.
Defra has since extended the deadline for consultation until the end of this month. An association spokeswoman said she believed this was at the request of a couple of large producers, and now expected to hear from Defra in early March.
Hilary Baker, communications director for Northern Foods, said the company would deliver a submission. She added that it had also requested a further hearing in the Court of Appeal over the Melton Mowbray case.
The EU is due to rule on Melton Mowbray pies in May.