You can't patent a bare idea, but you can patent an invention that is new, involves an inventive step and can be made or used in industry. In India you file Form 1 with a provisional or complete specification at the Indian Patent Office, request examination on Form 18 within 31 months, answer the First Examination Report, and pay renewal fees from the third year. The government filing fee starts at ₹1,600 for individuals, startups, small entities and educational institutions.
Most people who search for "how to patent an idea" have something more concrete than an idea: a product, a process, a formulation or a piece of engineering that solves a problem in a new way. That is exactly what the Patents Act, 1970 protects. This guide walks through the full journey in India, from the day you have the invention to the day the patent is granted and kept alive.
Can you patent an idea?
Not as an idea alone. A patent is granted for an invention, which Section 2(1)(j) of the Patents Act defines as a new product or process involving an inventive step and capable of industrial application. In practice, that means three tests:
- Novelty: the invention hasn't been published, used or patented anywhere in the world before your filing date.
- Inventive step: it isn't obvious to a person skilled in that field. It should be a technical advance or have economic significance, or both.
- Industrial application: it can be made or used in an industry.
You also need to describe the invention well enough that a skilled person could reproduce it. "An app that books doctors using AI" is an idea; a specific technical method for matching patients to slots, described step by step, may be an invention.
Some things can't be patented in India however new they are, under Sections 3 and 4. These include mathematical methods, business methods, computer programs per se, methods of treating humans or animals, plants and animals, mere discoveries, and new uses of known substances that don't improve efficacy. Software-related inventions can still be patentable when they produce a technical effect beyond the program itself.
Step 1: Keep the invention confidential
India has no general grace period for your own disclosures. If you publish a paper, post a demo video, pitch at a public event or start selling before you file, that disclosure can be used against your own application. Until you file, share details only under a non-disclosure agreement.
Researchers and students: file before you submit the paper, thesis or conference abstract. A provisional application can be filed quickly to secure the date.
Step 2: Write down the invention
Prepare an invention disclosure: the problem, how others currently solve it, how your invention works, what is new about it, drawings or flowcharts, and test results if you have them. Note who contributed to the inventive idea. Only people who contributed to the inventive concept are inventors; people who only funded or tested it are not.
Step 3: Run a patentability search
Search Indian and international patent databases (such as InPASS on the IP India portal, WIPO Patentscope, Espacenet and Google Patents) and technical literature for anything close to your invention. A professional patent search saves money: it tells you early if the invention is already known, and shows how to frame claims around what exists.
Step 4: Choose provisional or complete filing
If the invention is still being developed, file a provisional specification to lock in your priority date, then file the complete specification within 12 months. If it is ready, file the complete specification straight away. Our guide on provisional vs complete specification explains how to decide.
Step 5: Draft the specification
The complete specification (Form 2) contains the title, field, background, a detailed description with the best method of performing the invention, drawings, the claims and an abstract. The claims define the legal boundary of your patent, so they are the most important part. Claims that are too broad get rejected; claims that are too narrow are easy to design around. This is where a registered patent agent earns their fee.
Step 6: File the application
Applications are filed online on the IP India portal, at the patent office that has jurisdiction over the applicant's residence or place of business: Delhi, Mumbai, Kolkata or Chennai. Applicants in Delhi NCR, Haryana, Punjab and the northern states file at the Delhi office.
| Form | What it is | When |
|---|---|---|
| Form 1 | Application for grant of patent | Always, at filing |
| Form 2 | Provisional or complete specification | Always, at filing |
| Form 3 | Statement and undertaking about foreign filings (Section 8) | With the application; updates within 3 months of the FER |
| Form 5 | Declaration as to inventorship | With the complete specification |
| Form 26 | Power of attorney to a patent agent | If an agent files for you |
| Form 28 | Claim to startup or small entity status | To pay the reduced fee |
| Form 9 | Request for early publication (optional) | Any time after filing |
| Form 18 / 18A | Request for examination / expedited examination | Within 31 months of the priority date |
Step 7: Publication
Your application is published in the Patent Office Journal 18 months after the priority date, or about a month after you file a request for early publication (Form 9). Publication matters because your rights to claim damages start from that date, and competitors can see your claims. Pre-grant oppositions can be filed after publication.
Step 8: Request examination
The Patent Office doesn't examine an application until you ask. File Form 18 within 31 months of the priority date or filing date, whichever is earlier. This time limit applies to applications filed from 15 March 2024; older applications keep the earlier 48-month limit. If you miss it, the application is treated as withdrawn. Most applicants file Form 18 with the complete specification.
Startups, small entities, female applicants, government bodies and some other categories can request expedited examination on Form 18A, which can bring the first report within months instead of years.
Step 9: Reply to the First Examination Report
The examiner issues a First Examination Report (FER) listing objections on novelty, inventive step, clarity, unity of invention or formalities. You have six months to respond, extendable by three months on request. A good response combines technical arguments with careful claim amendments. If objections remain, the Controller schedules a hearing. See our FER reply service.
Step 10: Grant, and keeping the patent alive
Once all objections are resolved and no opposition succeeds, the patent is granted and published. It lasts 20 years from the filing date, provided you pay renewal fees every year from the third year. Fees for years that have already passed by the time of grant are paid together after grant. You also file a statement of working (Form 27) once for every period of three financial years.
| Step | Form | Govt. fee: individual / startup / small entity / educational institution | Govt. fee: others |
|---|---|---|---|
| File application | Form 1 | ₹1,600 | ₹8,000 |
| Early publication (optional) | Form 9 | ₹2,500 | ₹12,500 |
| Request for examination | Form 18 | ₹4,000 | ₹20,000 |
| Expedited examination (if eligible) | Form 18A | ₹8,000 | ₹60,000 |
| Renewal, years 3–6 | Annual | ₹800 a year | ₹4,000 a year |
Fees above are for online filing and cover up to 30 pages and 10 claims. Extra pages and claims cost more; our patent filing cost guide has the full breakdown, and the patent fee calculator works out your total.
How long does it take?
It depends mostly on when you request examination and the Patent Office's workload in your technology area. Under ordinary examination, grant usually takes several years from filing. Expedited examination can bring it down substantially, sometimes to around a year. Use our patent deadline calculator to see every date for your application.
Do you need a patent agent?
You can file yourself as an inventor, but only a registered patent agent (or the applicant) can act before the Patent Office on your behalf, and drafting is where most patents are won or lost. A poorly drafted specification can't be fixed later, because you can't add new matter after filing.
Frequently asked questions
Can I patent an idea without a prototype?
Yes. You don't need a working prototype, but you must describe the invention in enough detail that a person skilled in the field could make and use it. A provisional application lets you secure the date while you refine the details.
How much does it cost to patent an invention in India?
Government fees start at ₹1,600 to file and ₹4,000 to request examination for individuals, startups, small entities and educational institutions, and ₹8,000 and ₹20,000 for other applicants. Professional fees for search, drafting and filing are extra.
Is an Indian patent valid in other countries?
No. Patents are territorial. To protect the invention abroad, file in each country, or file an international (PCT) application, within 12 months of your Indian filing date to keep the same priority date.
Can I sell my product while the patent application is pending?
Yes, after you've filed. You can mark the product "patent pending". Don't sell or disclose it publicly before filing.
Who owns the patent if an employee invents it?
It depends on the employment contract or institutional IP policy. Usually employers and universities require inventors to assign inventions to them. Inventors are still named in the patent.
Can software be patented in India?
A computer program per se can't be patented under Section 3(k), but an invention implemented through software can be, if it shows a technical contribution or technical effect beyond the program itself, for example improving how a device or system works.
This guide is general information, not legal or tax advice. Rules and thresholds change; speak to an expert about your situation.