This document outlines various categories of inventions that are not patentable under Indian patent law. These include frivolous inventions, inventions contrary to natural laws, inventions whose commercial exploitation would be contrary to public order or morality such as gambling devices. Also not patentable are mere discoveries, new forms of known substances, new uses of known substances, admixtures, arrangements of known devices, methods of agriculture/horticulture, medical treatments, plants/animals, mathematical/business methods, computer programs, artistic works, schemes/rules, presentation of information, integrated circuit topographies, traditional knowledge, and inventions related to atomic energy.