
      (a) The Director may by rule prescribe that any document to be
    filed in the Patent and Trademark Office and which is required by
    any law, rule, or other regulation to be under oath may be
    subscribed to by a written declaration in such form as the Director
    may prescribe, such declaration to be in lieu of the oath otherwise
    required.
      (b) Whenever such written declaration is used, the document must
    warn the declarant that willful false statements and the like are
    punishable by fine or imprisonment, or both (18 U.S.C. 1001).

Last modified: April 19, 2006