Patent Prosecution in India: From Examination Report to Grant
Patent prosecution in India is the process that runs from the moment an application is filed until the Patent Office grants or refuses it: publication, a request for examination, the examination report, the applicant's reply, any hearing and the final decision. For founders and inventors in Jaipur and across Rajasthan, most of the work and most of the risk sit in the middle of that sequence, not at filing.
Riva Legal Associates is an intellectual property practice in Jaipur. Richa Vaishnav, its principal, is a registered patent agent with more than ten years of patent searching, filing and prosecution experience across life sciences, chemistry and mechanical subject matter. This guide sets out the process as it works, so that the stages and deadlines are familiar before any professional is involved.
What Is Patent Prosecution in India and Where Does It Start?
Patent prosecution is the exchange between an applicant and the Patent Office after a patent application is filed, until it is granted, refused or abandoned. In India it covers publication, the request for examination, the examination report, the applicant's reply, any hearing, and the final grant or refusal decision.
The term is often confused with litigation. It is not. Prosecution is an administrative process before the Controller of Patents, under the Patents Act, 1970 and the Patents Rules, 2003 (the "2003 rules" that many people search for). The Manual of Patent Office Practice and Procedure describes it as a multi-stage process: filing, electronic data processing, screening and classification, publication, examination, hearing if required, pre-grant opposition, and grant or refusal.
Which patent office handles the application?
An application is filed at the patent office whose territorial jurisdiction covers the applicant's residence, domicile or place of business, or the place where the invention originated, as the Indian Patent Office jurisdiction page explains. That office is the one the applicant deals with through prosecution, even though filing and most correspondence now happen online.
Patent Prosecution Stages at a Glance
The table below follows a typical application after filing. Timings vary with the route taken (direct filing, convention filing or PCT national phase), so treat it as a map rather than a calendar.
| Stage | What happens | Who acts |
|---|---|---|
| Publication | The application is published in the official journal, generally 18 months from the priority date unless early publication is requested | Patent Office; applicant if early publication is sought |
| Request for examination | Form 18 is filed with the prescribed fee; without it the application is not examined | Applicant or an interested person |
| First examination report | The examiner issues objections and cites prior art | Examiner |
| Reply | Arguments, amended claims and evidence are filed to meet the objections | Applicant or agent |
| Hearing, if required | The Controller hears the applicant on unresolved objections | Controller and applicant |
| Pre-grant opposition | Any person may oppose before grant, subject to the Act | Opponent, then applicant |
| Grant or refusal | The Controller grants the patent or refuses the application | Controller |
Why Does the Request for Examination Timing Matter?
An application is not examined until the applicant files a request for examination on Form 18, so the deadline controls whether the application proceeds at all. For applications filed on or after 15 March 2024 the deadline is 31 months from the earlier of the priority or filing date; earlier filings have 48 months.
The Indian Patent Office's Guidelines for Search and Examination record the older period of 48 months from the priority or filing date, whichever is earlier, and note that the request can be made by the applicant or any other interested person under section 11B. The 2024 amendments to the Patents Rules shortened that window to 31 months for newer filings, so check which period applies to your application rather than relying on older guides.
Filing early or late: what changes?
The deadline is a maximum, not a target. Filing the request early brings the examination report sooner, which helps if a funder, licensee or competitor timeline matters. Filing late gives more time to see whether the invention is commercially viable, but it compresses the period left for the reply, hearing and any amendment.
Missing the deadline ends the application, and that is rarely recoverable. For PCT national phase entries, the same date logic should be diarised on entry, not when the examination report is expected.
What Does the First Examination Report Contain?
The first examination report is the examiner's written statement of objections to the application, usually with cited prior art documents. Typical objections cover novelty, inventive step, subject matter excluded from patentability, clarity or support of the claims, and unity of invention. The report also starts the clock for the applicant's reply.
The examination report is commonly called the FER. It is issued only after the request for examination is filed and the application reaches the examiner's turn in the queue, so the gap between the request and the FER can be considerable. The Patent Office's search and examination guidelines describe the examiner's role as a search for prior art and a check against the requirements of the Act.
The usual groups of objection
- Novelty and inventive step: the examiner says one or more cited documents disclose the invention or make it obvious.
- Non-patentable subject matter: the claims fall within sections 3 or 4 of the Act, which list things that are not inventions or are not patentable. Software, computer-implemented methods, new uses of known substances and some biological material often meet this objection.
- Insufficiency and clarity: the claims are unclear, too broad for the description, or not fully supported by it.
- Unity of invention: the application claims more than one invention and may need a divisional.
- Formal requirements: missing forms, foreign filing details or sequence listings.
How long is the period to reply?
Under the Patents Rules as amended in 2024, the reply period is generally six months from the date the report is issued, extendable by up to three months on request, for nine months at the outer limit. Older guidance, including an official FAQ that refers to twelve months, reflects the earlier rule. Always take the date from the report itself and confirm the period against the current Rules.
How Do You Prepare a Reply to the Examination Report?
Prepare the reply by reading every cited document against the claims, deciding for each objection whether to argue or amend, and filing one consolidated response with any amended claims and supporting evidence before the deadline. Amendments must stay within what the original specification disclosed, so the drafting choices made at filing shape what is possible.
The reply is where most of the legal and technical work in prosecution happens. A practical sequence looks like this:
- Read the report and the citations in full. Note exactly what each cited document discloses, not what the examiner's summary says it discloses.
- Map each claim feature to the prior art. A chart showing which features appear in which document, alone or in combination, shows where the real gap is.
- Identify the technical distinction. Ask what the invention does differently, and what effect that difference produces.
- Choose between argument and amendment. Argument keeps the claim scope; amendment narrows it, sometimes by bringing in a feature from the description or a dependent claim.
- Check support. Every amended claim needs a basis in the specification as filed. Matter added later is not allowed.
- Add evidence where needed. Experimental data or a technical affidavit can support an inventive step argument.
- File one consolidated reply with a clean set of claims and a marked-up copy, within the deadline.
How the technical field changes the reply
The nature of the evidence differs by field. In life sciences and chemistry, objections often turn on whether a compound, formulation or process shows a technical effect over the known art, and comparative data may matter. In mechanical inventions, the discussion is more often about how a combination of structural features differs from cited drawings. Our detailed guide to responding to an examination report goes through the reply step by step.
Hearings, Pre-Grant Opposition and Grant
If the reply does not resolve every objection, the Controller may issue a hearing notice. Hearings are held at the relevant patent office, increasingly by video, and the applicant or the authorised agent presents the arguments. A short period after the hearing, usually stated in the notice, is allowed for written submissions.
After the hearing the Controller decides to grant the patent or refuse the application, and gives reasons. A refusal can be challenged by appeal to the High Court under section 117A of the Act, within the time the Act provides. A hearing is a chance to clarify technical points in person; it works best when the written reply was already organised around the distinction that matters.
Pre-grant opposition
Any person may file a pre-grant opposition after publication and before grant, on the grounds listed in section 25(1). This can arrive at any point in prosecution, including after a favourable reply, and the applicant must then answer it. Our guide on filing a patent opposition in India covers the process from the opponent's side, which is also useful for applicants who want to anticipate it.
Grant and what follows
Once granted, the patent is recorded and notified in the official journal. A patent in India runs for 20 years from the filing date, or from the international filing date for PCT national phase applications, and stays in force only if renewal fees are paid under section 53 of the Act. Even after grant, post-grant opposition and revocation proceedings remain possible, and working statements are due periodically.
Rajasthan applicants may also want to read the Rajasthan State Policy on Intellectual Property Rights 2021-2026, which provides for reimbursement of patent expenditure limited to 75% and not exceeding Rs 1.00 lakh per application, subject to approval and its conditions. The policy period ends in 2026, so confirm its current status with the State Department of Science and Technology.
How Can You Check Patent Application Status and Monitor Prosecution?
Patent application status in India is checked online through the Indian Patent Office's public search and e-register tools, using the application number. Patent status monitoring means checking those records on a regular schedule and diarising each statutory deadline separately, because a missed statutory date can end an application.
A practical monitoring routine has four parts. Record the application number, filing date and priority date on day one. Diarise the publication date, the request for examination deadline and the reply deadline once the report issues. Check the e-register at least monthly for new entries such as a hearing notice. Keep copies of every filing and acknowledgment, since the online record can lag behind what was actually filed.
Our separate piece on the difference between a patent agent and a patent attorney explains who may take these steps on an applicant's behalf.
Who Can Prosecute a Patent Application in India?
An applicant may act personally or through an authorised representative. Registered patent agents, listed on IP India's Electronic Register of Patent Agents, commonly handle filing and prosecution, and advocates may also appear in proceedings. Applicants with no place of business in India must give an Indian address for service.
Whether an agent is registered can be checked on the Electronic Register of Patent Agents, which also records removals for non-payment of fees. Registration as a patent agent is separate from enrolment as an advocate, and the two should not be confused.
Our patent prosecution work covers life sciences, chemistry and mechanical inventions, and is led by a registered patent agent. Matters in other states are taken up in association with local counsel where required, from a single chambers in Jaipur. Virtual consultations are available for all clients, including those abroad. We practise intellectual property law, including patents, trade marks, copyright, designs, geographical indications and trade secrets.
Points to Keep in Mind Across the Process
- Prosecution is a sequence of statutory deadlines; the dates in the examination report and the Rules control, not general guides.
- A strong specification at filing makes later amendments possible, because added matter is not permitted.
- Evidence and argument should be organised around one clear technical distinction from the prior art.
- Third parties may oppose before grant, so a reply that looks complete can still be followed by further proceedings.
- Grant is not the end: renewal fees and periodic statements keep a patent in force.
Each application turns on its own claims, prior art and dates, so the points above are general and are not advice on any particular filing. The Patents Act, 1970, the Patents Rules, 2003 as amended, and the Indian Patent Office's published manual remain the authoritative sources.
This content is published for general information only. It is not legal advice, an advertisement, or a solicitation of work, and reading it does not create an advocate-client relationship. In keeping with the Bar Council of India Rules, Riva Legal Associates does not solicit work or advertise.