In our previous post, we saw the process for application for a patent in India along with the criteria for patentability. The Patent's Act, 1970 ('Patent Act') also enunciates as to what are not considered as inventions. Section 3 of the Patent Act bars certain inventions from patentability and any invention which falls within the purview of Section 3 will lead to a refusal. In today's post, we will briefly discuss about Section 3 of the Patent Act and what kind of inventions fall within its ambit.