A cheese firm is taking on Greek and European authorities for the right to produce feta.
Only Greek producers can use the term feta from 2007
Yorkshire Feta has been made by Shepherds Purse Cheeses in North Yorkshire since 1987.
But its future has been in doubt since 2002 when the European Commission decided only Greek producers could use the term "feta".
The Thirsk firm stands to lose tens of thousands of pounds if it has to rename its product.
A spokesman for the European Court of Justice in Luxembourg said on Tuesday it would be around six months before judges ruled whether feta was a unique product, like champagne or Parma ham.
Judy Bell, of Shepherds Purse Cheeses, said the cheese was in high demand and was clearly labelled Yorkshire Feta.
"It beggars belief I'm afraid," she said.