Plaintiff Fuji Kogyo Co., appeals the decision of the district court dismissing its suit to enjoin its competitors, the Defendants, Pacific Bay International, Inc., Batson Enterprises, Inc., and Amtak Limited, from selling fishing line guides that allegedly infringe its registered and unregistered trademarks. The district court cancelled three of Fuji’s registered trademarks because it found them to be functional and therefore unprotectable. We affirm.