Patents Act 1977

17 Preliminary examination and search

(1) Where an application for a patent has a date of filing and is not withdrawn, and before the end of the prescribed period—

(a) a request is made by the applicant to the Patent Office in the prescribed form for a preliminary examination and a search; and

(b) the prescribed fee is paid for the examination and search (the search fee);

the comptroller shall refer the application to an examiner for a preliminary examination and search, except that he shall not refer the application for a search until it includes one or more claims.

(2) On a preliminary examination of an application the examiner shall determine whether the application complies with those requirements of this Act and the rules which are designated by the rules as formal requirements for the purposes of this Act and shall report his determination to the comptroller.

(3) If it is reported to the comptroller under subsection (2) above that not all the formal requirements are complied with, he shall give the applicant an opportunity to make observations on the report and to amend the application within a specified period (subject to section 15(5) above) so as to comply with those requirements (subject, however, to section 76 below), and if the applicant fails to do so the comptroller may refuse the application.

(4) Subject to subsections (5) and (6) below, on a search requested under this section, the examiner shall make such investigation as in his opinion is reasonably practicable and necessary for him to identify the documents which he thinks will be needed to decide, on a substantive examination under section 18 below, whether the invention for which a patent is sought is new and involves an inventive step.

(5) On any such search the examiner shall determine whether or not the search would serve any useful purpose on the application as for the time being constituted and—

(a) if he determines that it would serve such a purpose in relation to the whole or part of the application, he shall proceed to conduct the search so far as it would serve such a purpose and shall report on the results of the search to the comptroller ; and

(b) if he determines that the search would not serve such a purpose in relation to the whole or part of the application, he shall report accordingly to the comptroller;

and in either event the applicant shall be informed of the examiner's report.

(6) If it appears to the examiner, either before or on conducting a search under this section, that an application relates to two or more inventions, but that they are not so linked as to form a single inventive concept, he shall initially only conduct a search in relation to the first invention specified in the claims of the application, but may proceed to conduct a search in relation to another invention so specified if the applicant pays the search fee in respect of the application so far as it relates to that other invention.

(7) After a search has been requested under this section for an application the comptroller may at any time refer the application to an examiner for a supplementary search, and subsection (4) above shall apply in relation to a supplementary search as it applies in relation to any other search under this section.