In 1997, Franklin Loufrani and Smiley World attempted to acquire trademark rights to the symbol (and even to the word "smiley" itself) in the United States. This brought Loufrani into conflict with Wal-Mart, which had begun prominently featuring a happy face in its "Rolling Back Prices" campaign over a year earlier. Wal-Mart responded first by trying to block Loufrani's application, then later by trying to register the smiley face itself; Loufrani, in turn, sued to stop Wal-Mart's application, and in 2002 after the issue went to court, where it would languish for seven years before a decision.