Dick Smith’s Australian-owned Vegemite alternative, OzEmite, is set to disappear from supermarket shelves as the result of a legal battle he says will be a ‘‘catastrophe’’ for his charity.

The makers of another locally-produced spread, Aussie Mite, are seeking to have Dick Smith Foods’ OzEmite brand struck off the trademarks register at a hearing in Canberra on Tuesday.

Dick Smith says he won't even bother turning up to court to fight for the right for the OzEmite brand.

This would pave the way for Aussie Mite’s owners, South Australian businessman Roger Ramsey and his daughter, Elise, to sue Mr Smith’s charity for trademark infringement if it continues to use the brand.

Mr Smith is refusing to fight the application because he does not want to spend ‘‘one cent’’ on lawyers.