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How to File a Patent Application in India

  • Apr 7
  • 6 min read

Introduction

Have a brilliant invention? You need to protect it — and in India, the right way to do that is by filing a patent.

A patent gives you the exclusive right to use, manufacture, and sell your invention for up to 20 years. No one else can copy or exploit your idea without your permission. But many inventors feel lost when it comes to the actual filing process.

Don't worry. This guide breaks it all down in plain language — no legal jargon, no confusion. Whether you're an individual inventor, a startup founder, or a company, here's exactly how to file a patent application in India.

What is a Patent?

A patent is an exclusive legal right granted by the government to an inventor. In exchange for publicly disclosing how your invention works, the government gives you a monopoly over its commercial use for 20 years.

In India, patents are governed by the Patents Act, 1970 and administered by the Indian Patent Office (IPO), which operates under the Office of the Controller General of Patents, Designs and Trade Marks (CGPDTM).

Key point: A patent only protects your invention within the country where it is filed. To protect it in multiple countries, you need to file separately in each, or use the PCT (Patent Cooperation Treaty) route.

What Can Be Patented in India?

To be eligible for a patent in India, your invention must satisfy three core criteria:

  • Novelty — It must be new; not previously known, used, or published anywhere in the world.

  • Inventive Step — It must involve a non-obvious creative advance over existing technology.

  • Industrial Applicability — It must be capable of being made or used in some kind of industry.

What CANNOT be patented in India:

  • Scientific theories or mathematical methods

  • Literary, artistic, or aesthetic creations (these fall under copyright)

  • Business methods, mental acts, or games

  • Plants and animals (other than microorganisms)

  • Traditional knowledge or folklore

  • Inventions that are harmful to public order, morality, or health

Software and computer programs are not directly patentable in India — but a software-enabled technical invention with a hardware component may qualify.

Types of Patent Applications in India

Before you file, you need to choose the right type of application:

1. Provisional Application

File this when your invention is not yet fully complete. It establishes an early filing date (priority date) and gives you 12 months to file a complete application. It's faster, cheaper, and buys you time to refine your invention.

2. Complete (Ordinary) Application

This is the full application with all technical details. You can file this directly if your invention is fully developed, or after filing a provisional application within 12 months.

3. Convention Application

If you've already filed a patent in another country (like the USA or UK), you can file a convention application in India within 12 months and claim the priority date of your foreign application.

4. PCT National Phase Application

If you filed an international patent application under the Patent Cooperation Treaty (PCT), you enter India as a national phase within 31 months from the priority date.

5. Divisional Application

If your original application covers more than one invention, the IPO may ask you to divide it. A divisional application is filed to handle each invention separately.

Step-by-Step Process to File a Patent in India

Step 1: Conduct a Patent Search

Before filing, do a thorough prior art search to make sure your invention is truly new. Check:

If you find similar patents, your application may be rejected. A patent agent can help you assess novelty accurately.

Step 2: Prepare the Patent Application

A complete patent application typically includes the following documents:

  • Form 1 — Application for Grant of Patent

  • Form 2 — Complete or Provisional Specification (the technical disclosure of your invention)

  • Form 3 — Statement and Undertaking (if you've filed abroad)

  • Form 5 — Declaration as to Inventorship

  • Form 28 — If claiming small entity or startup status (for fee concession)

  • Priority Documents — Required for convention applications

  • Power of Attorney — If filing through a patent agent

The Complete Specification (Form 2) is the most critical part of your application. It includes: Title, Field of Invention, Background, Summary, Detailed Description, Claims (define the scope of legal protection), Abstract, and Drawings (if applicable). Claims are the heart of the patent — they define exactly what is protected. Getting them right is crucial.

Step 3: Choose Your Filing Mode

You can file your patent application in two ways:

  • Online: Through the Indian Patent Office e-Filing portal at https://ipindiaonline.gov.in — recommended, faster, and slightly cheaper.

  • Offline: Submit physical documents at one of the four Patent Office branches (Mumbai, Delhi, Kolkata, Chennai). Your filing jurisdiction depends on your address.

Step 4: Pay the Application Fees

Patent filing fees in India depend on the type of applicant. Here's a simplified fee chart for filing a complete specification:

Applicant Type

Filing Fee (Paper)

Filing Fee (e-Filing)

Individual / Startup / MSME

₹1,750

₹1,600

Small Entity

₹4,400

₹4,000

Large Entity

₹8,800

₹8,000

Additional fees apply for excess claims, examination requests, and renewal fees.

Step 5: File the Application and Get the Application Number

Once submitted (online or offline), you receive an Application Number. Keep this safe — it is used for all future correspondence, tracking, and publication purposes.

Step 6: Publication of the Application

Your patent application is published 18 months after the filing date (or priority date). Publication is automatic and mandatory under Indian patent law.

If you want early publication (before 18 months), you can file a Request for Early Publication using Form 9 and pay the applicable fee.

Once published, your application becomes publicly visible on the IPO website.

Step 7: Request for Examination

Publication alone does not lead to grant. You must file a Request for Examination (RFE) using Form 18 within 48 months from the filing date (or priority date).

If you want expedited examination, file Form 18A (Request for Expedited Examination). This is available for startups, female inventors, government departments, and PCT national phase applicants.

Step 8: Respond to the First Examination Report (FER)

After examination, the IPO issues a First Examination Report (FER) — also called an Office Action — which may raise objections regarding patentability, prior art, or specification clarity.

You must respond to the FER within 12 months of its issuance, addressing each objection. You may need to amend claims, provide arguments, or submit additional information.

Step 9: Grant of Patent

If all objections are resolved satisfactorily and no opposition is received, the IPO grants the patent. Your patent is entered in the Patent Register and a Letters Patent certificate is issued.

Congratulations — you're now a patent holder in India!

How Long Does It Take?

Here's a realistic timeline overview:

  • Provisional to Complete Application: Up to 12 months

  • Publication: Automatic at 18 months from filing date

  • Examination (after RFE): 2–4 years (normal) or 6–12 months (expedited)

  • Total time from filing to grant: Typically 3–5 years

Expedited examination can significantly reduce the timeline for eligible applicants. Always respond to FER promptly to avoid delays.

Do You Need a Patent Agent?

You are legally allowed to file a patent on your own (pro se filing). However, hiring a registered patent agent is highly recommended because:

  • Patent drafting is highly technical — claims must be precisely worded to provide maximum protection.

  • Errors in the specification or claims are hard to correct after filing.

  • A patent agent knows how to navigate the examination process and respond to objections effectively.

You can find registered patent agents on the IPO website. Typical fees for a patent agent in India range from ₹15,000 to ₹80,000 depending on complexity.

Pro Tips for a Successful Patent Application

  1. Keep detailed records — notebooks, sketches, prototypes — with dates, to establish your invention timeline.

  2. Maintain confidentiality before filing. Disclosing your invention publicly before filing can destroy its novelty.

  3. File a provisional application early to lock in your priority date, then refine before filing the complete specification.

  4. Write broad claims first, then narrow them. Broader claims mean stronger protection.

  5. Consider filing PCT if you plan to seek international protection within 12 months of filing in India.

  6. Pay renewal fees on time — a patent lapses if annual fees are not paid.

Conclusion

Filing a patent in India is a multi-step process, but it's very much achievable — especially when you understand each stage clearly.

The key steps are: search, draft, file, publish, request examination, respond to objections, and receive grant. Each step matters, and getting the specification and claims right from the start makes a huge difference.

If you have an invention worth protecting, don't delay. Filing early gives you the earliest priority date — and that can make all the difference in protecting your innovation.

Good luck, and happy inventing!

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