A local brewery is under fire from Red Bull.
The energy drink is challenging the use of the word "Ox" in its brand name.
"Old Ox Brewery" is located in Ashburn and opened in June of last year.
Red Bull says having "Ox" in the brewery's name is likely to confuse customers because an ox and a bull are both considered bovine animals and a lot of people can't tell the difference.
Red Bull is taking their claim to court, filing an opposition with the U.S. Patent and Trademark office.
"Old Ox Brewery" says the challenge is frivolous and jeopardizes its business.