(1) This rule applies in relation to a document or thing produced under rule 420 (4) for a proceeding.
(2) If the person producing the document or thing objects to it being inspected by a party to the proceeding, the person must, when producing the document or thing, give the registrar written notice of the objection and the grounds of the objection.
(3) If a party to the proceeding, or a person having a sufficient interest in the document or thing, objects to the document or thing being inspected by a party to the proceeding, the party or person may give the registrar written notice of the objection and the grounds of the objection.
(4) On receiving a notice of objection under subrule (2) or (3) , the registrar—(a) must give written notice of the objection to the party on whose behalf the subpoena was issued; and(b) must not allow any person to inspect, or further inspect, the document or thing.
(5) The party on whose behalf the subpoena was issued may, on reasonable notice to the person who gave the notice of objection, apply to the court for a decision about the objection.