Patents Act, 1970
3.What are not inventions
The following are not inventions within the meaning of this
Act,-
(a) an invention which is frivolous or which claims anything
obviously contrary to well established natural laws;
(b) an invention the primary or intended use of which would be
contrary to law or morality or injurious to public health;
(c) the mere discovery of a scientific principle or the
formulation of an abstract theory;
(d) the mere discovery of any new property or new use for a
known substance or of the mere use of a known process, machine or apparatus
unless such known process results in a new product or employs at least one new
reactant;
(e) a substance obtained by a mere admixture resulting only in
the aggregation of the properties of the components thereof or a process for
producing such substance;
(f) the mere arrangement or re-arrangement or duplication of
known devices each functioning independently of one another in a known way;
(g) a method or process of testing applicable during the process
of manufacture for rendering the machine, apparatus or other equipment more
efficient or for the improvement or restoration of the existing machine,
apparatus or other equipment or for the improvement or control of manufacture;
(h) a method of agriculture or horticulture;
(i) any process for the medicinal, surgical, curative,
prophylactic or other treatment of human beings or any process for a similar
treatment of animals or plants to render them free of disease or to increase
their economic value or that of their products.