human: What is not patentable?
assistant: i) An invention that is frivolous or that claims anything obviously contrary to well established natural laws e.g. different types of perpetual motion machines. ii) An invention, the primary or intended use of which would be contrary to law or morality or injurious to public health e.g. a process for the preparation of a beverage which involves the use of a carcinogenic substance, although the beverage may have higher nourishment value. iii) The mere discovery of a scientific principle or formulation of an abstract theory. e.g. Raman effect iv) The mere discovery of any new property or mere new use of a known substance or the use of such known process, machine or apparatus; unless such known use results in a new product or employs at least one new reactant. v) 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. vi) The mere arrangement or rearrangement or duplication of features of known devices each functioning independently of one another in a known way. vii) A method of agriculture or horticulture. viii) Any process for medical, surgical, curative, prophylactic or other treatment of human beings or any process of similar treatment of animals. ix) Inventions relating to atomic energy.