Patents [CAP.400 13. (I) Every application for a patent. other than a convention application. shall be accompanied by either a complete specification or a provisional specification and every convention application shall be accompanied by acomplete specification. • , (2) If a complete specification does not accompany an applica­ tion. it shall be lodged within twelve months after the date of lodg­ ing of the application or within such further period. not exceeding three monthssas the Registrar may in writing allow upon payment of the prescribed fee. and if the provisions of this subsection are not complied with the application shall lapse. . (3) Where two or more applications accompanied by provisional specifications have been lodged in respect of inventions which are cognate or of which ~me is a modification of another. a single complete specification may, subject to the provisions of this section and section fourteen. be lodged in pursuance of those applications. or, if more than one complete specification has been lodged, may with the leave of the Registrar be proceeded with in respect of those applications. (4) Where applications for protection have been made in one or more convention countries in respect of two or more inventions which are cognate or of which one is a modification of another, a sin­ gle convention application may, subject to the provisions of sections eleven and fourteen, be made in respect of those inventions at any time within twelve months from the effective date of the earliest of the said applications for protection. (5) In consic-ving the validity of applications made in terms of subsection (3) or (4) and in determining other relevant matters under this Act, the Registrar shall have regard to the effective dates of the applications or the convention applications concerned relating to the sexeral matters claimed in the specification, and the requirements of subsection (4) of section twelve shall, in the case of any such appli­ cation, apply separately to the applications for protection in respect of each of the said inventions. (6) Where an application for a patent. not being a convention application, is accompanied by a specification purporting to be a .omplete specification, the Registrar may. if the applicant so requests at any time before the acceptance of the specification, direct that it shall be treated for the purposes of this Act as a provisional specifi­ cation and proceed with the application accordingly. (7) Where a complete specification has been lodged in pursuance of an appli-ation for a patent accompanied by a provisional specifi­ cation or by a specification treated by virtue of a direction under sub­ section (6) as a provisional specification. the Registrar may, if the applicant so requests at any time before the acceptance of the com­ plete specification. cancel the provisional specification and post-date the application to the date of lodging of the complete specification. 17 Complete and provisional specifications