What Is Patent Filing in India?
Patent filing is the legal process of submitting an invention to the Indian Patent Office for examination and grant of exclusive rights.
To qualify for a patent, your invention must meet three conditions:
- Novelty – It must be new worldwide
- Inventive Step – It must not be obvious
- Industrial Applicability – It must have practical use
If any one condition fails, the application may be rejected.
Types of Patent Applications in India
Choosing the correct application type affects your strategy and timeline.
1. Provisional Application
- Filed when the invention is still evolving
- Secures an early priority date
- Must file complete specification within 12 months
2. Complete Specification
- Filed when invention is fully developed
- Contains detailed claims defining protection scope
3. Ordinary Application
Filed directly in India without foreign priority.
4. Convention Application
Filed in India claiming priority from a foreign country within 12 months.
5. PCT National Phase Application
Filed under the Patent Cooperation Treaty route for international applicants.
Patent Filing Process in India – Step by Step
Step 1: Patentability Search
Before filing, conduct a prior art search. This checks if similar inventions already exist.
Skipping this step increases rejection risk.
Search sources include:
- Indian Patent Advanced Search System
- WIPO database
- Google Patents
This stage helps refine claims before filing.
Step 2: Drafting the Patent Specification
Drafting determines the strength of your protection.
The specification includes:
- Title
- Background
- Detailed description
- Claims
- Abstract
- Drawings
Claims define legal rights. Weak drafting narrows protection and reduces enforceability.
Step 3: Filing the Patent Application
Applications are filed online through the Indian Patent Office portal.
Key forms:
- Form 1 – Application
- Form 2 – Specification
- Form 3 – Statement & undertaking
- Form 5 – Inventorship declaration
- Form 26 – Power of attorney (if filed through agent)
Once submitted, you receive an application number and filing date.
Step 4: Patent Publication in India
Applications are automatically published after 18 months in the Patent Journal.
You can request early publication to accelerate the process.
Publication makes your invention public but does not grant protection yet.
Step 5: Request for Examination (RFE)
Examination does not begin automatically.
You must file RFE within 48 months from the filing date.
Failure to file RFE results in abandonment.
Step 6: First Examination Report (FER)
The examiner issues an FER if objections are found.
Common objections:
- Lack of novelty
- Obviousness
- Improper claim structure
- Insufficient disclosure
Applicants must respond within the prescribed time.
Step 7: Grant of Patent
After objections are resolved, the patent is granted and published.
Protection lasts 20 years from the filing date, subject to annual renewal fees.
Patent Filing Cost in India
Government fees vary based on applicant category:
- Individual
- Startup
- Small entity
- Large entity
Costs depend on:
- Number of claims
- Number of pages
- Professional drafting charges
- Examination requests
Professional drafting increases cost but significantly reduces rejection risk.
Patent Filing Timeline in India
Typical duration:
- Filing to publication: 18 months (earlier if requested)
- Filing to examination: After RFE
- Filing to grant: 2–4 years
Expedited examination is available for eligible applicants such as startups.
Common Mistakes in Patent Filing
- Public disclosure before filing
- Poorly drafted claims
- Missing deadlines
- Skipping patent search
- Not filing Request for Examination
Many rejections occur due to technical drafting errors rather than lack of innovation.