35 U.S.C. 387, Relief from prescribed time limits
An applicant's failure to act within prescribed time limits in connection with requirements pertaining to an international design application may be excused as to the United States upon a showing satisfactory to the Director of unintentional delay and under such conditions, including a requirement for payment of the fee specified in section 41(a)(7), as may be prescribed by the Director.
Effective Dates for Changes Made to this Section
(a) In General.--The amendments made by this title shall take effect on the later of--
(1) the date that is 1 year after the date of the enactment of this Act; or
(2) the date of entry into force of the treaty with respect to the United States.
The effective date is December 18, 2013.