Step-by-Step Guide to Pre-Grant Patent Opposition

India’s patent system does not simply hand out patent rights the moment an application is filed. It builds in deliberate checkpoints – and one of the most powerful is the pre-grant opposition. Under Section 25(1) of the Patents Act, 1970, any person – not just a competitor or an industry player, but literally any member of the public – can challenge a patent application before it is granted. This participatory mechanism is central to how India ensures that only genuinely deserving inventions receive patent protection. Understanding the step-by-step procedure is essential for anyone navigating Indian patent law.

What is pre-grant opposition and who introduced it? 🔗

Pre-grant opposition allows third parties to intervene in the patent grant process after a patent application has been published but before the patent is actually granted. While a third-party observation mechanism existed even earlier, the formal pre-grant and post-grant opposition framework as we know it today was introduced through the Patents (Amendment) Act, 2005, primarily to align Indian law with India’s obligations under the TRIPS Agreement (Trade-Related Aspects of Intellectual Property Rights). Before 2005, there was no mechanism to challenge a patent once it had been granted – making pre-grant opposition all the more significant as a safeguard.

The legal basis is Section 25(1) of the Patents Act, 1970, read with Rule 55 of the Patents Rules, 2003. The procedural form used is Form 7A, prescribed under the Second Schedule of the Patent Rules.

Who can file and when? 🔗

One of the most distinctive features of pre-grant opposition in India is its open standing. Unlike post-grant opposition – which can only be filed by a “person interested” – pre-grant opposition can be filed by any person, without needing to demonstrate a specific interest in the outcome. This makes it a genuinely public-interest mechanism.

The opposition can be filed at any time after the publication of the patent application and before its grant. The Indian legislature intentionally retains a minimum six-month window between the date of publication and the grant of the patent, specifically to give the public an opportunity to raise objections. One important condition: a request for examination of the patent application must have already been filed before the representation is considered. Opposition cannot be based merely on the published abstract – the complete specification must be reviewed.

Grounds for pre-grant opposition 🔗

The grounds on which a pre-grant opposition can be filed are set out in Section 25(1)(a) to (k) of the Patents Act. These include:

Prior publication: The invention was published anywhere in India or abroad before the priority date of the claim.

Prior claiming: The invention was already claimed in a specification filed in India with an earlier priority date.

Prior public use or knowledge: The invention was publicly known or used in India before the priority date.

Obviousness: The invention is obvious and does not involve any inventive step.

Non-patentable subject matter: The subject matter of the invention falls under categories excluded from patentability under the Act.

Insufficiency of description: The complete specification does not sufficiently and clearly describe the invention or the method of performing it.

Non-disclosure or false information under Section 8: The applicant failed to disclose information about corresponding foreign applications or furnished false information.

Convention application timing: In the case of a convention application, the Indian application was not filed within 12 months of filing in the convention country.

Biological material non-disclosure: The source or geographical origin of any biological material used in the invention was not disclosed or was wrongly mentioned.

Traditional knowledge anticipation: The invention is anticipated by traditional knowledge of any local or indigenous community in India or elsewhere in the world.

It is worth noting that the grounds for pre-grant and post-grant opposition are largely identical – but the procedures differ substantially.

Step-by-step procedure for pre-grant opposition 🔗

Step 1: Filing the representation (Form 7A) 🔗

The process begins with the opponent filing a written representation against the grant of the patent. This is done using Form 7A, submitted to the Controller at the patent office where the original application was filed. Crucially, there is no official fee for filing a pre-grant opposition – making it a relatively low-cost avenue for public scrutiny. The representation must include a statement of opposition and any supporting evidence the opponent wishes to rely on. A bare representation without factual backing is unlikely to merit further consideration.

Step 2: Controller’s preliminary review 🔗

Once the representation is received, the Controller undertakes an initial review to assess whether it has merit. This is a threshold determination. As noted in established practice, if the examiner finds the arguments put forth in the statement of opposition to be without merit, the opposition may be rejected at this stage by passing a speaking order – a reasoned decision explaining why the objection was not sustained. The process does not automatically proceed to a full hearing in every case.

Step 3: Notice to the patent applicant 🔗

If the Controller finds prima facie merit in the representation, the patent applicant is served a notice of the opposition. This is where the adversarial element enters the picture. The applicant now has an opportunity to defend their application.

Step 4: Applicant’s response – statement and evidence 🔗

Upon receiving the notice, the patent applicant is required to file their own statement and evidence in reply, if any, within three months from the date of the notice. A copy of this response must also be sent to the opponent. This three-month window is strictly observed – timelines in patent opposition proceedings carry procedural consequences, and meticulous adherence to deadlines is essential for both parties.

Step 5: Hearing (if requested) 🔗

Either party – the opponent or the applicant – may request a hearing before the Controller. If such a request is made, the Controller will issue a notice of hearing to both sides and schedule the matter accordingly. The hearing gives both parties an opportunity to present oral arguments in addition to the written submissions already on record. Unlike post-grant opposition (which mandatorily involves an Opposition Board of three members), pre-grant opposition proceedings are conducted directly by the Controller without constituting such a board.

Step 6: The Controller’s decision 🔗

After considering all submissions – the representation, the applicant’s response, and any hearing arguments – the Controller passes a final decision. The possible outcomes are:

Rejection of opposition and grant of patent: If the Controller finds no merit in the opposition, the patent is granted.

Rejection of opposition with directions for amendment: The Controller may direct the applicant to amend the complete specification to their satisfaction, and then grant the patent.

Upholding the opposition and refusal to grant: If the Controller finds sufficient merit in the opposition, the grant of the patent is refused.

Appeals: what happens after the decision? 🔗

The appeal route following a pre-grant decision has evolved significantly. With the abolition of the Intellectual Property Appellate Board (IPAB), appeals against a Controller’s order in pre-grant opposition now lie before the High Court. One important asymmetry deserves attention: while the applicant can appeal if the opposition is upheld and the patent is refused, the opponent has no direct statutory appeal right if the patent is granted. In that scenario, the opponent’s recourse is to file a post-grant opposition or seek revocation of the patent.

Courts have also clarified the limits of writ jurisdiction in such matters. In cases examined by the Delhi High Court and Bombay High Court, it has been held that parties must exhaust all available statutory remedies before approaching courts under Article 226 of the Constitution, unless there is a manifest jurisdictional or legal error by the Controller.

Landmark cases that shaped pre-grant opposition in India 🔗

Novartis vs. Cipla (2011) 🔗

Novartis filed a patent application for dispersible tablets comprising Deferasirox at the Chennai Patent Office. Cipla filed a pre-grant opposition under Section 25(1)(e), (f), and (h). The Controller, after a hearing, found the claims obvious in view of the prior art – the claims read upon previously disclosed ranges – and ruled in Cipla’s favour, rejecting the patent application. This case demonstrated the rigour with which pre-grant oppositions can be examined and the crucial role they play in the pharmaceutical sector.

Hindustan Lever Ltd. v. Godrej Soaps (1996) 🔗

Hindustan Lever filed two patent applications for detergent bar formulations. Godrej Soaps filed a pre-grant opposition on multiple grounds under Section 25(1). After a hearing, the Controller directed Hindustan Lever to amend the specifications. Once amended, the opposition was dismissed as the opponents could not establish sufficient grounds against the revised claims – illustrating how the amendment route within opposition proceedings can lead to a balanced outcome.

The participatory nature of patent governance 🔗

Pre-grant opposition is not merely a procedural formality. It reflects a deliberate policy choice: that patent governance in India is participatory. The public – including competitors, researchers, consumer groups, and civil society – has a formal role in scrutinising what gets patented. This is particularly consequential in sectors like pharmaceuticals, where a patent can directly affect medicine prices and access.

That said, the mechanism has its critics. Legal commentators have pointed out that the system has been misused – particularly in the pharmaceutical sector – to delay patent grants, with generic manufacturers sometimes using the pendency period to enter the market without any provision for patent term adjustment to compensate for the delay. Courts have flagged the problem of benami oppositions – fictitious or third-party filings masking the identity of the real opponent – as an area requiring reform. The system, as Justice Manmohan Singh observed, must not be allowed to become a tool for bad-faith delay.

Nevertheless, the checks built into the procedure – the requirement of merit-based preliminary review, the right of the applicant to respond with evidence, the option of hearings, and the Controller’s reasoned order – provide meaningful safeguards against frivolous use. A patent that successfully survives a pre-grant opposition ultimately carries a stronger presumption of validity and higher commercial credibility.

What do you think? Given that pre-grant opposition can be filed by “any person” without paying a fee, does this open standing sufficiently serve the public interest – or does it create too great a risk of abuse by bad-faith opponents? And should India introduce a patent term adjustment mechanism to compensate applicants for delays caused by prolonged pre-grant opposition proceedings?

References

1. https://www.indiacode.nic.in/handle/123456789/1392
2. https://ipindia.gov.in/patents.htm
3. https://www.lexology.com/library/detail.aspx?g=a401f6dc-da48-4244-90c2-bada4a81b533
4. https://www.mondaq.com/india/patent/1185948/opposition-proceedings-in-india
5. https://excelonip.com/pre-grant-opposition-in-india/
6. https://ssrana.in/ip-laws/patents/patent-opposition-india/
7. https://blog.ipleaders.in/patent-pre-grant-post-grant-opposition-procedure-india-vs-re-examination-us/
8. https://selvams.com/blog/pre-grant-patent-opposition-in-india/
9. https://www.obhanandassociates.com/blog/appeals-against-pre-grant-patent-oppositions-and-exhaustion-of-remedies/
10. https://law.asia/pre-grant-opposition-process-review/