Mere improvements in chemical substance are not patentable in India. A significant improvement in the properties of the chemical substance is essential to qualify for a patent. Some examples of mere improvements are: Isomers, Isotopes, Salts, Esters etc.
Section 3d of the Indian Patents Act, 1970, deals with non- patentability issues of mere improvements in chemical substances.
Are improvements in chemical substances patentable? - Prometheus IP
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Plot No:438, SPR Arcade,
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Telangana, India.
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