As soon as practicable after an invention has been exploited in
the circumstances mentioned in subsection 163(3) or 163A(3), the
relevant authority must inform the applicant and the nominated person, or the
patentee, of the exploitation and give him or her any information about the
exploitation that he or she from time to time reasonably requires, unless it
appears to the relevant authority that it would be contrary to the public
interest to do so.