in 2002, back yard burgers and yum! brands, inc., temporarily entered into a development agreement whereby yum! had an option to co-brand back yard burgers' trademarks with its other restaurants' trademarks, including taco bell, pizza hut, and kfc. in 2004, however, after yum! chose not to exercise its option, the two companies abandoned this plan as yum! began revitalization of the a&w brand of hamburgers and root beer.