A patent is a statutory right for an invention granted for a limited period of time to the patentee by the Government, in exchange of full disclosure of his invention for excluding others, from making, using, selling, importing the patented product or process for producing that product for those purposes without his consent.
To become patentable subject matter in India, an invention must meet the following criteria:
It should be novel.
It should have inventive step or it must be non-obvious.
It should be capable of industrial application.
It should not fall within the provisions of section 3 and 4 of the Patents Act 1970.