The Wyoming brewer, The Grand Teton Brewing Co., has lost its US trademark battle with the Canadian beer producer, Moosehead Brewers. After a five-year legal battle, Grand Teton is to cease production of its Moose Juice Stout brand.

The company received approval for the trademark in 1992 but this was recinded in June by the US Trademark Appeals Board in June. The dispute focused on Moosehead's claim to the Moose name worldwide.

"I never dreamt it was possible," said Grand Teton's founder, Charlie Otto. "I believed that if you were issued a US trademark it was yours. We build our company on the assumption that once a mark was issued you had the freedom and go-ahead to grow that brand."

The company said it will now focus on its new beer brands, the recently introduced Sweetgrass India Pale Ale and a new Extra Special Bitter which is scheduled to be launched later in the year.