(1) If it is impossible to serve a document on a person because his or her address or place of business of the person is unknown, public notice shall be given in lieu of service.
(2) Public notice in lieu of service shall be given by publishing the statement that the relevant document is available at any time for delivery to the person on whom it is to be served, in the Patent Gazette.
(3) Initial public notice in lieu of service shall take effect two weeks after the date of publication in the Patent Gazette: Provided, That subsequent public notice in lieu of service to the same party shall take effect on the following day after the publication in the Patent Gazette.[This Article Wholly Amended on Jun. 11, 2014]