24 CAP. 400]
Patents
months. may allow. or•. with the consent of the applicant. at any time
before the sealing of the patent. oppose the grant of a patent in accor
dance with the provisions of this section by giving written notice to
the Registrar of opposition to such grant on any of the following
grounds and no others. namely:
(a) that the applicant is not a person entitled under section
eleven to make the application;
(b) that the application is in fraud of the rights of the person
giving such notice or of any persons under or through
whom he claims;
(c)
that the invention does not relate to an art (whether pro
ducing a physical effect or not). process, machine, manu
facture or composition of matter, which is capable of being
applied in trade or industry;
(d) subject to the provisions of section thirty-one, that the
invention is obvious in that it involves no inventive step
having regard to what was common knowledge in the art at
the effective date of the application;
(e)
that the invention is not useful;
if) that the complete specification does not fully describe and
ascertain the invention and the manner in which it is to be
performed;
(g) that the claims of the complete specification do not suffi
ciently and clearly define the subject-matter for which pro
tection is claimed;
(h) that the complete specification does not disclose the best
method of performing the invention known to the applicant
at the time when the specification was lodged at the Patent
Office;
(i) that the application contains a material misrepresentation;
(j) that the invention described or claimed in the complete
specification is not the same as that described in the provi
sional specification, and
(i) in so far as it is not described in the provisional
specification, was not new at the date when the
complete specification was lodged at the Patent
Office; or
(ii) forms the subject of a pending application made in
Zambia for a patent the effective date of which is
prior to the date on which the complete specifica
tion was lodged at the Patent Office;
(k) in the case of a convention application, that the specifica
tion describes or claims an invention other than that for
which protection has been applied for in the convention
country and that such other invention either