A patent grants a 20-year exclusive right to your invention — but only if you file correctly, before anyone else, and before any public disclosure. Most inventors lose patent rights not because their invention is unworthy, but because they made an avoidable mistake in the process. This guide covers every step from the initial search to grant under the Patents Act, 1970.
Before You File — Critical Rules
Confirm your invention satisfies three requirements:
- Novelty: Not disclosed anywhere in the world before your filing date
- Inventive step: Not obvious to a person skilled in the relevant field
- Industrial applicability: Can be made or used in an industry
⚠️ The most costly mistake: Do NOT publicly disclose your invention before filing. Any public presentation, published paper, social media post, or product launch before your application date permanently destroys novelty under Indian patent law. File first. Disclose later.
Also confirm your invention does not fall within the non-patentable categories under Section 3 of the Patents Act. See: What Cannot Be Patented in India →
Step 1: Prior Art Search
Search existing patents and literature to assess novelty and understand the landscape:
- IP India Patent Search — all Indian applications and grants
- Google Patents — cross-database search across 100+ patent offices
- USPTO and EPO Espacenet — global patent databases
A thorough prior art search helps you draft claims that are differentiated from existing art and assess whether the invention justifies the filing cost.
Step 2: Provisional vs Complete Specification
- Provisional Application: A simplified filing that establishes your priority date without requiring full claims. Buys 12 months to complete the full specification. Ideal when the invention is still being developed. If you file a provisional, you must file the complete specification within 12 months — missing this deadline means losing your priority date.
- Complete Application: The full application filed directly, without a provisional. Your 20-year term runs from this date.
Step 3: Draft the Complete Specification
The complete specification must include: title, field of invention, background and problem statement, summary of invention, description of drawings (if any), detailed enabling description, claims (the legally binding definition of your invention), and abstract. The claims are the most critical part — they define the exact scope of protection and determine the commercial value of the patent. Poorly drafted claims can be designed around by competitors with minor modifications.
Step 4: File the Application
File with the Indian Patent Office using Form 1 (application), Form 2 (specification), Form 3 (statement regarding foreign applications) and Form 5 (declaration of inventorship). Applications can be filed online through the IP India portal or physically at the Patent Offices in Chennai, Delhi, Mumbai or Kolkata.
Step 5: Publication
Every application is mandatorily published in the Official Patent Journal 18 months from the priority date. You can request early publication by filing Form 9 — useful when you need the published application as proof of filing for commercialisation discussions.
Step 6: Request for Examination
Publication does not trigger examination automatically. File a Request for Examination (Form 18) within 31 months from the priority date. The Patent Office assigns an Examiner who issues a First Examination Report (FER). You have 12 months from the FER to respond to all objections.
Step 7: Grant
If all objections are resolved, the patent is granted and published in the Patent Journal — giving you a 20-year exclusive right from the complete specification filing date, subject to annual renewal fees.
Fee Summary (Individual / Startup)
| Stage | Individual / Startup Fee | Large Entity Fee |
|---|---|---|
| Provisional application | ₹1,600 | ₹8,000 |
| Complete specification | ₹1,600 | ₹8,000 |
| Request for examination | ₹4,000 | ₹20,000 |
| Expedited examination | ₹8,000 | ₹60,000 |
Conclusion
Patent filing in India rewards preparation and punishes errors. Search first, file before you disclose, draft your claims carefully, and respond to examination reports within deadlines. Professional guidance on specification drafting is a worthwhile investment — it determines the commercial value of everything that follows. Learn about our patent filing service →
Have an invention you want to patent?
Adv. Nikhil Soni advises on patentability, conducts prior art searches and manages the complete patent filing process.