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10.—(1) For the purposes of any proceedings before the registrar under these Rules or any appeal from a decision of the registrar under the Act or these Rules, an address for service in the United Kingdom shall be filed by–
(a)every applicant for the registration of a trade mark;
(b)every person opposing an application for registration of a trade mark;
(c)every applicant applying to the registrar under section 46 for the revocation of the registration of a trade mark, under section 47 for the invalidation of the registration of a trade mark, or under section 64 for the rectification of the register;
(d)every person granted leave to intervene under rule 35 (the intervener); and
(e)every proprietor of a registered trade mark which is the subject of an application to the registrar for the revocation, invalidation or rectification of the registration of the mark.
(2) The address for service of an applicant for registration of a trade mark shall upon registration of the mark be deemed to be the address for service of the registered proprietor, subject to any filing to the contrary under paragraph (1) above or rule 44(2) below.
(3) In any case in which an address for service is filed at the same time as the filing of a form required by the registrar under rule 3 which requires the furnishing of an address for service, the address shall be filed on that form and in any other case it shall be filed on Form TM33.
(4) Anything sent to any applicant, opponent, intervener or registered proprietor at his address for service shall be deemed to be properly sent; and the registrar may, where no address for service is filed, treat as the address for service of the person concerned his trade or business address in the United Kingdom, if any.
(5) An address for service in the United Kingdom may be filed at any time by the proprietor of a registered trade mark and by any person having an interest in or charge on a registered trade mark which has been registered under rule 40.
(6) Where an address for service is not filed as required by paragraph (1) above, the registrar shall send the person concerned notice to file an address for service within two months of the date of the notice and if that person fails to do so–
(a)in the case of an applicant as is referred to in sub-paragraph (a) or (c), the application shall be treated as abandoned;
(b)in the case of a person as is referred to in sub-paragraph (b) or (d), he shall be deemed to have withdrawn from the proceedings; and
(c)in the case of the proprietor referred to in sub-paragraph (e), he shall not be permitted to take part in any proceedings.