No. 91-1156. December 4, 1991. John M. Curtin, Leydig, Voit Mayer, of Chicago, Ill., argued and James B. Muskal and Amy N. Cohen, Leydig, Voit Mayer, Chicago, Ill., were on the brief, for appellant. Donald L. Dennison, Dennison, Meserole, Pollack Scheiner, of Arlington, Va., argued, for appellee. Appeal from the Trademark Trial and Appeal Board. Before MICHEL, PLAGER and RADER, Circuit Judges. RADER, Circuit Judge. In Opposition No. 81,365, Dena Corporation, opposer, appeals the Trademark Trial and