IN RE CENTOCOR, INC

Brian A. Coleman, Drinker, Biddle Reath LLP, of Washington, DC, argued for

With him on the brief was Jaye S.

Christina J. Hieber, Associate Solicitor, Office of the Solicitor, United States Patent

Trademark Office, of Arlington, VA, argued for the Director of the United States Patent

Trademark

With her on the brief were Stephen Walsh, Acting Solicitor,

Mary L. Kelly, Associate