80Hours of business and business days
(1)The registrar may give directions specifying the hours of business of the Patent Office for the purpose of the transaction by the public of business under this Act, and the days which are business days for that purpose.
(2)Business done on any day after the specified hours of business, or on a day which is not a business day, shall be deemed to have been done on the next business day; and where the time for doing anything under this Act expires on a day which is not a business day, that time shall be extended to the next business day.
(3)Directions under this section may make different provision for different classes of business and shall be published in the prescribed manner.