The company launched its signature Smiley Cookie in 1986 to coincide with adding a bakery to its locations. The Smiley Cookie came from Warner's Bakery, a small bakery in Titusville, Pennsylvania. The Smiley Cookie would become so popular that it would eventually be added to its logo and would spawn the "Frownie" brownie from rival Kings Family Restaurants, which would be controversially discontinued in 2015 after Kings was sold to a private equity firm. Eat'n Park filed several lawsuits against companies outside the restaurants' operating area to enforce its trademark on the Smiley Cookie.
