(a) Where, in accordance with Rule 90.4(d), an International Searching Authority waives the requirement under Rule 90.4(b) that a separate power of attorney be submitted to it, the International Searching Authority shall notify the International Bureau accordingly.
(b) Where, in accordance with Rule 90.5(c), an International Searching Authority waives the requirement under Rule 90.5(a)(ii) that a copy of a general power of attorney be attached to any separate notice, it shall notify the International Bureau accordingly.
(c) An International Searching Authority may require a separate power of attorney, or a copy of a general power of attorney, in particular instances even if the International Searching Authority has waived the requirement in general.
(d) An International Searching Authority which has notified the International Bureau under paragraph (a) or (b) shall notify the International Bureau of any change to the information notified under those paragraphs.