DPIIT patent

Patent Filing in India – Step by Step: The Complete 2026 Guide Innovation is the engine of India’s growing economy, and patents are the shield that protects it. Whether you are a startup founder who has built a breakthrough product, an individual inventor with a game-changing idea, a researcher at a university, or a corporation introducing new technology to the Indian market, filing a patent is one of the most powerful legal tools available to you. Yet for most people, the patent filing process in India feels overwhelming — full of legal jargon, complex forms, and bureaucratic steps. This guide demystifies the entire process. From understanding what a patent is to receiving your grant certificate, we walk you through every single step of filing a patent in India in plain, actionable language. What Is a Patent? A patent is a legal right granted by the government to an inventor, giving them exclusive rights to make, use, sell, import, or license their invention for a limited period — typically 20 years from the date of filing — in exchange for publicly disclosing the invention. In practical terms, a patent means that no one else in India can commercially exploit your invention without your permission during that period. It gives you the power to license your invention for royalties, sell it, use it as a business asset, or take legal action against infringers. Why File a Patent in India? Exclusive commercial rights for up to 20 years Legal protection against competitors copying your invention Ability to license your invention and earn royalty income Stronger negotiating position with investors and business partners Enhancement of your company’s IP portfolio and valuation Recognition of your innovation — builds credibility and brand trust Priority basis for international patent filings under the Patent Cooperation Treaty (PCT) Government incentives and fee concessions for startups and individual inventors Who Can File a Patent in India? Under the Patents Act, 1970 (as amended), the following persons or entities are eligible to apply for a patent in India: The true and first inventor of the invention An assignee of the inventor (a person or company to whom the inventor has assigned rights) The legal representative of a deceased inventor Any combination of the above Importantly, a company (Indian or foreign) can also file a patent application in India, provided it satisfies the requirements of the Patents Act. Startups recognized under DPIIT (Department for Promotion of Industry and Internal Trade) are entitled to fee concessions. What Can Be Patented in India? Patentable Inventions To be patentable in India, an invention must satisfy three fundamental criteria: Novelty: The invention must be new — it should not have been published, disclosed, or publicly used anywhere in the world before the date of filing Inventive Step (Non-Obviousness): The invention must not be obvious to a person skilled in the relevant field of technology Industrial Applicability: The invention must be capable of being made or used in some kind of industry What Cannot Be Patented in India? Section 3 of the Patents Act, 1970 lists several categories of inventions that are not patentable in India, including: Mere discoveries of a scientific principle or abstract theory Discoveries of naturally occurring substances (plants, animals, microorganisms as found in nature) Mathematical or business methods, computer programs per se, and algorithms Literary, dramatic, musical, or artistic works (these are protected by copyright) Mere arrangement, rearrangement, or duplication of known devices Methods of agriculture or horticulture Methods of treatment of human beings, animals, or plants (diagnostic, therapeutic, surgical) Inventions that are frivolous or contrary to natural laws Inventions the use of which would be contrary to public order or morality Traditional knowledge or aggregation of known properties of traditionally known components Types of Patent Applications in India 1. Ordinary Application A standard patent application filed at the Indian Patent Office without claiming priority from any earlier application. This is the most common type for inventors filing for the first time. 2. Convention Application Filed within 12 months of the first filing in a convention country (Paris Convention country), claiming priority from the earlier foreign application. This allows Indian inventors to secure an international priority date. 3. PCT National Phase Application Filed after an international PCT application enters the national phase in India. The applicant must enter the national phase within 31 months from the earliest priority date. This is widely used by multinational companies. 4. Divisional Application Filed when an original application contains more than one distinct invention. The divisional application covers the additional invention(s) while retaining the original filing date. 5. Patent of Addition Filed for improvements or modifications to an already-patented invention. It runs concurrently with the main patent and does not require a separate renewal fee. 6. Provisional Application Filed when the invention is not yet fully developed but the inventor wants to secure an early filing date. It establishes a priority date and gives the inventor 12 months to file a complete specification. Highly recommended for early-stage inventors. Indian Patent Office — Overview The Indian Patent Office (IPO) operates under the Office of the Controller General of Patents, Designs and Trade Marks (CGPDTM), which is under the Ministry of Commerce and Industry. There are four branch offices: Kolkata (Head Office): For applications from West Bengal, Bihar, Jharkhand, Odisha, Sikkim, Andaman & Nicobar Islands, and northeast states Mumbai: For applications from Maharashtra, Gujarat, Goa, Madhya Pradesh, Chhattisgarh, Rajasthan, and Daman & Diu Chennai: For applications from Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, Telangana, Puducherry, and Lakshadweep Delhi: For applications from Uttar Pradesh, Haryana, Punjab, Himachal Pradesh, Jammu & Kashmir, Delhi, and Uttarakhand Filing can be done physically at the appropriate branch office or online through the IP India e-filing portal (ipindiaonline.gov.in). Step-by-Step Process: How to File a Patent in India   STEP 1 Conduct a Prior Art Search Before filing, conduct a thorough search to ensure your invention is novel. A prior art search examines existing patents, published patent applications, scientific literature, and public disclosures worldwide. Use