Rule 55 of the Patents Rules, 2003
Opposition to the patent
Rule 55 sets out how a pre-grant representation opposing a patent application is filed, tested for merit and decided by the Controller.
Official legal text
The verbatim statutory text of this provision is reproduced from the official source and checked by our legal reviewer before it is published here. Until that check is complete for this page, read the exact wording directly from the official source linked below — it is the only version that governs.
This explanation is written for clarity, not for citation. The official statutory text and any Gazette notification in force on your date govern, and they prevail over anything said here.
What this rule requires, step by step
Section 25(1) of the Patents Act, 1970 lets any person object to a patent application before the patent is granted. This is called a pre-grant representation, and it is one of the few points in Indian patent law where a complete stranger to the application can intervene. Rule 55 supplies the working steps. The representation is filed at the appropriate patent office in Form 7A, with the fee prescribed in the First Schedule, and it must contain a statement setting out the grounds relied on and any evidence in support. The person filing it should also say clearly if a hearing is wanted, because the right to be heard has to be asked for.
Timing is controlled at both ends. A representation cannot be filed before the application is published under section 11A, because until publication there is nothing public to object to, and it cannot be filed after the patent is granted, when the only route left is post-grant opposition or revocation. The Controller also does not act on a representation until a request for examination has been filed for the application, so a representation against an application that nobody has asked to be examined simply waits.
The Patents (Amendment) Rules, 2024 added an important filter. The Controller first decides whether the representation is maintainable, that is, whether it makes out a prima facie case worth putting to the applicant. If it does not, the person who filed it is told and may ask to be heard within one month of that communication, after which the Controller passes a reasoned order. Only if a prima facie case is made out does the Controller issue a notice to the applicant.
Once notice is issued, the applicant may file a statement and evidence in reply within the period fixed by Rule 55. That period was shortened by the 2024 amendment, so check the current text of the rule for the exact number of months rather than relying on older commentaries. The 2024 changes also direct that an application facing a pre-grant representation is examined on the expedited track under Rule 24C, which stops representations from being used purely to delay a grant.
After considering the representation, the applicant's reply and any hearing, the Controller may refuse the application, ask for the complete specification and other documents to be amended before grant, or reject the representation and let the application proceed. The order is normally passed within a month of the proceedings being completed. Evidence in these proceedings is filed by affidavit, and if the person opposing is not in India, an address for service in India must be given.
Why this rule matters
Any person, in India or abroad, who wants to stop a pending Indian patent application, and every applicant whose application is published.
Between publication of the application under section 11A and the grant of the patent.
A public right to challenge an application before grant, and a duty on the Controller to test that challenge fairly and give reasons.
An applicant who does not reply on time can lose the application; a would-be opponent who waits until grant loses this cheaper route entirely.
How it works in practice
A Ludhiana workshop objects before grant
Kestrel Robotics Pvt Ltd applies for a patent on a loom attachment that reduces yarn breakage. The application is published, and a request for examination is filed. Sundaram Textiles, a Coimbatore mill that has used a very similar attachment for years, learns of the publication from its trade association. Rather than wait for a grant and then fight a costly post-grant battle, it files a representation in Form 7A with the prescribed fee, attaching dated purchase invoices, a supplier drawing from six years earlier and photographs of the machine on its shop floor, and asks for a hearing. The Controller finds a prima facie case and sends notice to Kestrel Robotics, which files a reply arguing that the earlier attachment worked differently. The application is put on the expedited examination track. After hearing both sides the Controller allows the application to proceed but only with claims narrowed to the specific tensioning mechanism, which no longer covers the mill's machine. Sundaram Textiles achieves what it needed without litigation.
Simplified illustration only. Actual legal outcomes depend on the facts.
Key points to remember
- Any person may file a pre-grant representation; you do not have to show a commercial interest.
- It is filed in Form 7A with a statement, evidence and the fee prescribed in the First Schedule.
- It can only be filed after publication under section 11A and before grant.
- The Controller will not act on it until a request for examination has been filed.
- Since 2024 the Controller first decides whether the representation makes out a prima facie case.
- Applications facing a pre-grant representation are examined on the expedited track under Rule 24C.
- The Controller may refuse the application, require amendments, or reject the representation.
Common mistakes and misunderstandings
- Believing you must be a competitor to file. Section 25(1) allows any person to file, which is why public interest groups use this route.
- Filing before the application is published. There is nothing to oppose until publication, and an early filing achieves nothing.
- Treating a pre-grant representation as a delaying tactic. Since 2024 it triggers expedited examination and a maintainability check, so a weak representation can be disposed of quickly.
- Sending only arguments with no documents. Prior art must be proved with dated publications or records, and evidence is filed by affidavit.
- Forgetting to ask for a hearing. The Controller is not obliged to offer one if it has not been requested.
Connected provisions
The link between a rule and its section matters in practice, because an argument about whether a procedure is valid usually starts with the parent provision. The connected sections are listed here, apart from the explanation, so the chain of authority is easy to follow.
Forms, deadlines and fees
Where a form is required, the Second Schedule to the Patents Rules prescribes it. Superseded versions circulate widely online, so download the current form from the Patent Office and check it against the rule before use.
- A representation may be filed at any time after publication of the application under section 11A and before the patent is granted.
- If the Controller finds no prima facie case, the person who filed may request a hearing within one month of that communication.
- The applicant must file a reply statement and evidence within the period fixed by Rule 55, which was shortened by the 2024 amendment; confirm the current period before relying on it.
Open the deadline calculator — and have every date confirmed against the current Rules before you rely on it.
Fees are prescribed in the First Schedule to the Patents Rules. Because the Schedule is revised from time to time, and charges different amounts to different categories of applicant and for physical as against electronic filing, this page describes the fee without stating a figure. How Indian patent fees work.
Amendment history
What changed in this provision, newest first. Read the footnotes in the official consolidated text for the full record.
- 2024The Patents (Amendment) Rules, 2024Pre-grant opposition was reworked. A fee is now payable for a representation, the Controller first decides whether a case has been made out and informs the opponent if it has not, and the periods for replying and for deciding were shortened.
- 2016The Patents (Amendment) Rules, 2016The steps and the timetable for handling a pre-grant representation were revised.
- 2014The Patents (Amendment) Rules, 2014A separate prescribed form was introduced for a pre-grant representation. Attribution pending reviewer confirmation.
- 2005The Patents (Amendment) Rules, 2005The rule was rewritten when opposition was split into a representation before grant and an opposition after grant.
Compiled from official consolidated texts and Gazette notifications. See the site-wide change log.
Related judgments
You will not find case summaries under this heading today. Each one must pass a legal review before it appears, and that work has not been completed for this provision. If you are researching decided cases, use a law report or a court database in the meantime. How case notes are prepared.
Questions people ask about Rule 55
Who can file a pre-grant opposition in India?
Any person can. Unlike post-grant opposition, which is limited to a person interested, section 25(1) is open to competitors, industry bodies, patient groups, researchers and individuals alike. This makes it a widely used tool, particularly where a granted patent would affect public access to a product. You still need real grounds and real evidence, because the Controller now checks whether the representation makes out a prima facie case before troubling the applicant with it.
How much does a pre-grant representation cost to file?
A fee is payable, and the amount is set out in the First Schedule to the Patents Rules, 2003, with reduced rates for natural persons, startups, small entities and educational institutions. Filing was free before the 2024 amendment, so older articles saying there is no fee are out of date. Always check the current First Schedule and the electronic filing discount before you pay, and keep the payment receipt with your filing acknowledgement.
What grounds can I raise in a pre-grant representation?
The grounds are listed in section 25(1) and include wrongful obtaining, prior publication, prior claiming, public knowledge or public use in India, obviousness and lack of inventive step, that the subject matter is not an invention under the Act, insufficient description, failure to disclose foreign filing information under section 8, wrong priority, and failure to disclose the source or geographical origin of biological material. You may raise more than one ground, but each needs its own evidence.
What happens if my pre-grant representation is rejected?
The application proceeds towards grant. A pre-grant opponent is not given a statutory appeal in the way a party to a post-grant opposition is, so the practical options are to file a post-grant opposition within one year of publication of the grant if you are a person interested, to seek revocation under section 64, or to challenge the order in the High Court by writ where there is a serious procedural failure. Preserve all your evidence, because it will be reused.
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