Regulation 81

the Registrar shall direct the applicant for revocation of the patent to file Patents Form 36 requesting re-examination of the patent, together with the prescribed re-examination fee and any security for the costs or expenses of the proceedings specified by the Registrar, within 2 months from the date of the direction, and if the applicant fails to do so within that period he shall be deemed to have abandoned his application; and

the Examiner shall during re-examination take into consideration the statement by the applicant, any amendment of the specification of the patent, the counter-statement by the proprietor of the patent and any evidence filed under rule 80 and shall recommend whether or not the patent should be revoked on any of the grounds specified in the application for revocation, and shall notify the Registrar of the conclusions in the re-examination report stating fully the reasons for such conclusions.

is allowable under section 84(4); and

would overcome, in whole or in part, any of the grounds of revocation specified in the application for revocation.