Patents [CAP.400 29. The term of every patent shall, subject to the provisions of this Act, be­ 31 Term of patent (a) in the case of a patent granted under this Act, sixteen years from the date of-lodging of the complete specification at the Patent Office; (b) in the case of a patent granted under the Patents (Southern Rhodesia) Act, Chapter 208 of the 1948 Edition of the Laws, fourteen years from the date the paten~ was sealed; (c) in the case of a patent registered under the Registration of United Kingdom Patents Act, Chapter 205 of the 1957 Edition of the Laws, the term of the relevant United Kingdom patent; (d) in the case of a patent granted under the Patents (Transitional Provisions) Act, 1958, the period specified in paragraph (b) or (c), as the case may be. (No. 12 of 1959 as amended by GN No. 185 of 1964 and S.l. No. 175 of 1965) 30. (1) A patentee or an exclusive licensee may, after advertising in the prescribed manner, apply to the Registrar for an extension of the term of the relevant patent on anyone or more of the following grounds, namely: I (a) that he has not derived adequate remuneration from that patent; (b) that by reason of hostilities between the Republic or any country of the Commonwealth and any foreign state, he has suffered loss or damage including­ (i) loss or damage arising out of action taken in pur­ suance of an official request to keep secret the spec­ ification of the invention to which the patent relates; and (ii) loss of opportunity for dealing in or developing the invention on account of- A. the fact that he or his employees were engaged in work of national importance; or B. lack of supplies or loss of markets as a result of such hostilities, wherever such lack or loss occurs. ~2) Any such application may be made­ (a) in the case of an application under paragraph (a) of sub­ section (1), not more than twelve and not less than six months before the date of expiration of the term of the patent in question or at such later time, being not later than the date of expiration of the patent, as the Registrar may allow; end Extension of patent