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