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Post-Grant Opposition Petition — Draft Template

Complete guide to post-grant opposition under Indian IP law. Process, documents, fees, enforcement, latest amendments. Updated March 2026.

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Patent
Published
March 23, 2026
Last updated
Oct 6, 2026
Reading time
7 min
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Last updated: October 2026Verified against: Government sources

Overview

This article provides a comprehensive, plain-language explanation of Post-Grant Opposition Petition under the Patents Act, 1970 and the Rules made thereunder. Whether you are a business owner, startup founder, IP professional, or creator, understanding these provisions is essential for protecting your intellectual property rights in India.

The relevant provisions are found in Section 25(2), read with applicable Rules, Notifications, and Practice Directions issued by the Controller General of Patents, Designs and Trade Marks (CGPDTM) and the Indian IP Office. This article incorporates all amendments up to March 2026.

Why This Matters
Failure to protect your intellectual property can result in loss of exclusive rights, inability to prevent competitors from copying your work, and significant financial losses. Conversely, infringing someone else's IP can lead to injunctions, damages of lakhs to crores, criminal prosecution, and imprisonment. Understanding post-grant opposition is crucial for every business operating in India.

What the Law Requires

Key Legal Framework

Section 25(2) of the Patents Act, 1970 establishes the framework for post-grant opposition. The provisions cover: (a) what can be protected, (b) who can apply, (c) the application and examination process, (d) rights granted upon registration, (e) term and renewal, (f) enforcement against infringement, and (g) penalties for violations.

The corresponding Rules provide detailed procedural requirements including prescribed forms, fees, timelines, and documentation.

Who Can Apply / Who Is Affected?

Applicant TypeEligible?Special Provisions
Individual / Sole ProprietorYesCan apply personally or through an agent
Partnership Firm / LLPYesApply in the name of the firm/LLP
Company (Pvt/Public)YesBoard resolution authorizing the application recommended
Startup (DPIIT Recognized)YesFee concessions, expedited examination available
Small Entity / MSMEYesReduced fees under applicable rules
Foreign ApplicantYesMust apply through an agent registered in India; convention/PCT priority available
Government / Educational InstitutionYesFee concessions in some cases
Fee Concessions for Startups
DPIIT-recognized startups get significant fee concessions on IP filings -- up to 80% reduction on patent filing fees and 50% on trademark fees. Additionally, startups can avail expedited examination for patents. for DPIIT recognition assistance.

Detailed Explanation with Practical Examples

Example 1: Amit from Faridabad has developed a unique brand name for his clothing line. He wants to prevent others from using the same or similar name. He needs to file a trademark application to secure exclusive rights over the brand name across India.

Example 2: A tech startup in Gurugram has developed a novel algorithm for logistics optimization. They need to evaluate whether this qualifies for patent protection, copyright protection, or trade secret protection -- and take steps accordingly before disclosing it publicly.

Example 3: A designer has created a unique pattern for textile products. She can protect this through design registration (if it is a new and original design applied to an article) or copyright registration (if it qualifies as an artistic work). The choice depends on the nature of the work and the protection needed.

Practical Advice
For post-grant opposition, always conduct a thorough search of existing registrations before filing. This helps avoid objections, oppositions, and wasted filing fees. our IP team conducts comprehensive searches and advises on the best protection strategy.
Quick recapKey facts & short answers

Key Facts About Post-Grant Opposition Petition --

  • Applies in: All states across India, under the relevant central law.
  • Mode: Mostly online via the official government portal.
  • Typical timeline: Ranges from a few days to a few weeks depending on the case.
  • Non-compliance: May attract penalties, interest or late fees.
  • Expert help: TaxClue completes Post-Grant Opposition Petition -- end to end for you.

What is post-grant opposition?

Section 25(2) of the Patents Act, 1970 governs post-grant opposition. It covers eligibility, process, rights, and enforcement.

How long does the process take?

Timelines vary: Trademark registration typically 8-24 months, Patent grant 2-5 years, Copyright registration 2-6 months, Design registration 6-12 months.

An assignment is complete when it is in writing and on record, not when the fee is paid.

— TaxClue IP Desk

Post-Grant Opposition Petition --: a key compliance topic in Indian tax and corporate law that businesses and individuals must understand to remain compliant.

READY DRAFTPost-Grant Opposition — Draft Petition

A notice of opposition to a granted patent under Section 25(2), filed by a person interested on Form 7 within 12 months of grant publication, referred to an Opposition Board for recommendation.

BEFORE THE CONTROLLER OF PATENTS
THE PATENT OFFICE, [Delhi / Mumbai / Chennai / Kolkata]

NOTICE OF POST-GRANT OPPOSITION
(Under Section 25(2) of the Patents Act, 1970 read with
 Rule 55A & Rule 57 of the Patents Rules, 2003 — Form 7)

In the matter of Patent No. [XXXXXX]
Granted to (Patentee)  : [Patentee Name & Address]
Title of Invention     : [Title]
Date of Grant          : [DD/MM/YYYY]
Date of Publication of
   Grant in Journal    : [DD/MM/YYYY]
Last Date to Oppose    : [DD/MM/YYYY]  (within 12 months of publication)

AND

In the matter of an opposition by:
Opponent (person interested) : [Opponent Name & Address]
Through Agent                : [Patent Agent Name], Reg. No. IN/PA-XXXX

To,
The Controller of Patents,
The Patent Office, [Branch].

Sir/Madam,

The Opponent, being a "person interested" within the meaning of
Section 2(1)(t) [being engaged in / having a manufacturing or research
interest in the same field], hereby gives notice of opposition under
Section 25(2) to the above patent and prays that it be REVOKED. The
grounds and written statement (with evidence) accompany this notice as
required by Rule 57.

WRITTEN STATEMENT — GROUNDS OF OPPOSITION (Section 25(2))
--------------------------------------------------------------------
Ground 1 — Wrongful obtaining [25(2)(a)]: The invention was obtained
   wrongfully from the Opponent [Annexure A].

Ground 2 — Anticipation by prior publication [25(2)(b)]: Claims [__] are
   anticipated by D1 [No./date/passages], published before the priority
   date — see feature map at Annexure B.

Ground 3 — Prior claiming / prior public knowledge or use in India
   [25(2)(c)/(d)]: Established by [Annexure C].

Ground 4 — Obviousness / lack of inventive step [25(2)(e)]: Claims [__]
   are obvious over D1 in combination with D2 / common general knowledge.

Ground 5 — Not an invention / non-patentable [25(2)(f) r/w Sec 3/4]:
   Falls under Section 3([d]/[k]/[i]/...).

Ground 6 — Insufficiency of description [25(2)(g)]: The complete
   specification does not sufficiently and fairly describe the invention or
   the method by which it is to be performed.

Ground 7 — Section 8 non-compliance [25(2)(h)]: Failure to disclose /
   false information regarding corresponding foreign applications.

Ground 8 — Convention/other defaults & non-disclosure of source of
   biological material or traditional knowledge [25(2)(i)-(k)].

EVIDENCE (Rule 57 — statement and evidence with the notice)
--------------------------------------------------------------------
Annexure A : [Documents on wrongful obtaining]
Annexure B : Claim-to-prior-art feature-mapping chart (claims vs D1/D2)
Annexure C : Affidavit(s) of prior use / expert affidavit
Annexure D : Certified copies of cited prior art D1, D2 ...

PROCEDURE NOTED
--------------------------------------------------------------------
The Opponent is aware that, on this notice, the Controller shall constitute
an Opposition Board under Section 25(3)/(4) which shall examine the
opposition and submit its recommendation, and that a hearing will be given
to both parties before decision.

PRAYER
--------------------------------------------------------------------
It is respectfully prayed that: (a) this opposition be admitted and notice
issued to the Patentee under Rule 57; (b) the matter be referred to an
Opposition Board; (c) after hearing, Patent No. [XXXXXX] be REVOKED, or in
the alternative the Patentee be directed to amend the specification under
Section 58; and (d) costs be awarded to the Opponent.

Enclosures:
  1. Form 7 (notice of opposition) with prescribed fee.
  2. Written statement and evidence (Annexures A–D).
  3. Authorisation of agent (Form 26).

                                        Yours faithfully,

                                        ____________________________
                                        [Opponent / Patent Agent Name]
                                        Reg. No. IN/PA-XXXX (if agent)
                                        For and on behalf of the Opponent
                                        Place: [City]   Date: [DD/MM/YYYY]
▸ How to use & important notes
  • A post-grant opposition under Section 25(2) can be filed only by a "person interested" (Section 2(1)(t)) on Form 7 with the prescribed fee, within 12 months from the date of publication of grant — the deadline is not extendable.
  • File the written statement and evidence together with the notice (Rule 57); the matter is referred to an Opposition Board which gives a recommendation before the Controller decides after hearing both sides.
  • Ground it in dated, admissible prior art with a feature-mapping chart and, where prior use is alleged, a proper affidavit under the Evidence provisions.
  • A losing party may appeal; note that revocation can alternatively be sought before the High Court under Section 64 — but the two remedies should not be pursued in a manner that amounts to abuse of process.

Disclaimer: This is a general-purpose template for reference only. Facts, figures, stamp duty and clauses vary with your situation and state law — have it reviewed before use. Need this professionally drafted, stamped and filed? Talk to a TaxClue expert.

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Experienced in company registration, GST, trademark, and compliance. Helping Indian businesses stay compliant.

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Disclaimer: This article is for general informational purposes only and does not constitute professional tax, legal or financial advice. Laws, rates and due dates change and can vary by individual case — always verify with the relevant government source (e.g. mca.gov.in, incometax.gov.in) or consult a qualified professional before acting. TaxClue accepts no liability for decisions taken based on this content.

People also ask

Questions, answered

Short, direct answers to the 4 questions readers ask most on this topic.

Section 25(2) of the Patents Act, 1970 governs post-grant opposition. It covers eligibility, process, rights, and enforcement.

Timelines vary: Trademark registration typically 8-24 months, Patent grant 2-5 years, Copyright registration 2-6 months, Design registration 6-12 months.

Fees depend on applicant category (individual/startup/MSME/company) and whether filing is online or physical. Startups get significant concessions.

Complete IP services including search, filing, prosecution, and enforcement. .