Any invention is patentable, if it is novel in nature , involves an inventive step and is capable of industrial application.
Following shall not be regarded as invention within the meaning of sub-section (1), namely:-

(a) a discovery, scientific theory or mathematical method;

(b) a literary, dramatic, musical or artistic work or any other creation of purely

aesthetic character whatsoever;

(c) a scheme, rule or method for performing a mental act, playing a game or doing business;

(d) the presentation of information; and

(e) substances that exist in nature or if isolated therefrom.