IP Intelligence › Myths › You need a working prototype to file a patent.
Patent myth
“You need a working prototype to file a patent.”
India does not require a prototype or a deposit. It requires a description sufficient for a skilled person to perform the invention.
What matters is disclosure, not hardware. That said, in fields where an asserted effect will be doubted - chemistry, pharmaceuticals, biotechnology, food technology - data is effectively required to answer section 3 and inventive step objections, and data usually comes from experiments.
Inventors delay filing for a year building a prototype, and lose the date. Others file with no data at all in a field that demands it.
Sources & further reading
- The Patents Act, 1970 (consolidated to 1 August 2024) — Official IP India text
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Educational guidance, not legal advice. This material is published by Ragulika IP for general education and information. It is not legal advice, it does not create a professional-client relationship, and it is not a substitute for advice on your own facts. Patentability, infringement, prosecution strategy and every other IP outcome turn on the specific facts and on the law and Patent Office practice as they stand at the time you act. Please take professional advice before making a decision, and read the underlying provision or judgment before relying on any point stated here.
Last reviewed by Ragulika IP on 2026-08-23. Indian patent law and Patent Office practice change; check the position before you rely on it.