Patents Act 1977

15 Date of filing application

(1) The date of filing an application for a patent shall, subject to the following provisions of this Act, be taken to be the earliest date on which the following conditions are satisfied in relation to the application, that is to say—

(a) the documents filed at the Patent Office contain an indication that a patent is sought in pursuance of the application;

(b) those documents identify the applicant or applicants for the patent;

(c) those documents contain a description of the invention for which a patent is sought (whether or not the description complies with the other provisions of this Act and with any relevant rules); and

(d) the applicant pays the filing fee.

(2) If any drawing referred to in any such application is filed later than the date which by virtue of subsection (1) above is to be treated as the date of filing the application, but before the beginning of the preliminary examination of the application under section 17 below, the comptroller shall give the applicant an opportunity of requesting within the prescribed period that the date on which the drawing is filed shall be treated for the purposes of this Act as the date of filing the application, and—

(a) if the applicant makes any such request, the date of filing the drawing shall be so treated; but

(b) otherwise any reference to the drawing in the application shall be treated as omitted.

(3) If on the preliminary examination of an application under section 17 below it is found that any drawing referred to in the application has not been filed, then—

(a) if the drawing is subsequently filed within the prescribed period, the date on which it is filed shall be treated for the purposes of this Act as the date of filing the application; but

(b) otherwise any reference to the drawing in the application shall be treated as omitted.

(4) Where, after an application for a patent has been filed and before the patent is granted, a new application is filed by the original applicant or his successor in title in accordance with rules in respect of any part of the matter contained in the earlier application and the conditions mentioned in subsection (1) above are satisfied in relation to the new application (without the new application contravening section 76 below) the new application shall be treated as having, as its date of filing, the date of filing the earlier application.

(5) An application which has a date of filing by virtue of the foregoing provisions of this section shall be taken to be withdrawn at the end of the relevant prescribed period, unless before that end the applicant—

(a) files at the Patent Office one or more claims for the purposes of the application and also the abstract; and

(b) makes a request for a preliminary examination and search under the following provisions of this Act and pays the search fee.