KFC has sued Church’s Texas Chicken, accusing the rival fast-food chain of violating its trademark rights in the phrase “Original Recipe.”

According to a report from Scripps News, KFC is accusing its fried chicken foe of stealing its trademarked “Original Recipe” phrase. The finger-pointing began last week when K

KFC’s “Original Recipe” trademark, which it says is a secret blend of 11 herbs and spices, has long been part of the company’s branding. The blend is closely guarded, and the company calls it one of the most “iconic trade secrets in the food industry.” It first trademarked the phrase in 1984.