Provisional Patent Application in India
Section 9, Patents Act, 1970 · Form 1 and Form 2 · Complete specification within 12 months
A provisional patent application secures a priority date for an invention that is not yet fully developed, by filing Form 1 with a provisional specification on Form 2 at the Indian Patent Office (Section 9, Patents Act, 1970). It must describe the invention but needs no claims. The complete specification must follow within 12 months, or the application is treated as abandoned; the same 12 months is the deadline for filing abroad with priority.
- Reviewed by
- Registered Patent Agent
- Last updated
- Written to support your claims. Enough detail, variations and examples to carry the priority date.
- Filed before disclosure. Timed ahead of launches, pitches, papers and trade shows.
- 12-month plan. Complete specification, foreign filings and budget mapped from day one.
- Vashi, Navi MumbaiOur office, Sector 30A
- Since 2008Filing with IP India
- Drafting to grantSpecification, FER reply and hearing
- Filing abroadConvention and PCT routes from India
Provisional patent application at a glance
- Law
- Section 9, Patents Act, 1970
- Forms
- Form 1 with a provisional specification on Form 2
- Claims
- Not required
- Deadline
- Complete specification within 12 months of filing, not extendable
- Government fee
- The same Form 1 fee as a complete application
- Use abroad
- The priority date can be claimed in Convention and PCT filings within 12 months
When should you file a provisional patent application?
File a provisional when the core of the invention is clear but the details are still moving, and you need a priority date now. Common triggers are a product launch, an investor pitch, a conference paper, a grant application or a pilot with a customer: once the invention is public, novelty is gone. Inventors near our office can talk it through in Vashi before anything is shown: see patent filing in Navi Mumbai.
A provisional also buys time to decide. In the 12 months that follow, you can test the invention, gather data, talk to the market, and decide whether and where to file abroad, without losing the priority date.
It is not the right tool in every case. If the invention is finished, a complete specification filed straight away saves a step and starts the examination clock sooner. And a provisional is only as good as its content: claims in the later complete specification get the provisional’s date only for matter that was fairly described in the provisional (Section 11).
How is a provisional specification different from a complete specification?
| Feature | Provisional specification | Complete specification |
|---|---|---|
| Purpose | Secures a priority date | Defines the invention for examination and grant |
| Claims | Not required | Required, and they set the scope of the patent |
| Detail | Describes the invention | Fully describes it, with the best method of performing it known to the applicant |
| Examined | Never | Yes, after a request for examination |
| Published | Not on its own; published with the complete application | At 18 months from priority, or earlier on request |
| Lifespan | 12 months, then abandoned if no complete specification | Leads to grant or refusal |
What should a provisional specification contain?
The more of the following it covers, the more of your later claims will enjoy the early priority date.
- Title and field. What the invention is and the technical area it belongs to.
- The problem. The limitation in existing solutions that the invention addresses.
- The solution. How the invention works, in technical terms.
- At least one detailed embodiment. A concrete way of making and using it.
- Variations and alternatives. Other materials, configurations or steps that would also work.
- Drawings or flowcharts. Figures that show the structure or the process.
- Data, if available. Test results, especially for chemical and pharmaceutical inventions.
- Advantages. The technical benefits that will support inventive step later.
What is the government fee for a provisional application?
A provisional is filed on Form 1 with the same fee as any patent application. No examination fee is due until the request for examination after the complete specification.
| Government fee, e-filing | Natural person, startup, small entity or educational institution | All other applicants |
|---|---|---|
| Application for grant of a patent (provisional or complete)Form 1up to 30 pages and 10 claims | ₹1,600 | ₹8,000 |
Government fees from Patents Rules, 2003, First Schedule, as amended (IP India), as checked on . Statutory fees only; the firm's professional fee is quoted separately in writing.
How do you file a provisional patent application?
Week 1
Invention disclosure
You explain the invention to the patent agent, under confidentiality, with sketches, data and what you believe is new.
Week 1 to 2
Quick prior-art check
A focused search to shape the description around what is actually new. A full patentability search can follow before the complete specification.
Before any disclosure
Draft and file
Form 1 and the provisional specification on Form 2 are filed online with drawings, plus the power of attorney and any status form. The filing date is your priority date.
Months 1 to 11
Develop and decide
Refine the invention, gather data, and decide on foreign filing. Residents of India check Section 39 permission before filing abroad.
By month 12
File the complete specification
With claims and Form 5 (inventorship). If several related provisionals were filed, one complete specification can cover them when filed within 12 months of the earliest (Section 9(2)).
By month 12
File abroad with priority
Convention applications or a PCT application, claiming the provisional’s date.
The three most common provisional mistakes
- A specification so thin that the later claims cannot rely on its date.
- Disclosing the invention before filing, or between the provisional and the complete specification in ways that go beyond what the provisional describes.
- Missing the 12-month date. It cannot be extended, and the application is then treated as abandoned.
Provisional patent FAQs
Can the 12-month deadline for the complete specification be extended?
No. Section 9(1) treats the application as abandoned if the complete specification is not filed within 12 months of the provisional. Plan the complete specification from month 8 or 9.
Can I use “patent pending” after filing a provisional?
Yes, it is accurate once an application is on file. Do not describe the product as “patented” until a patent is granted; falsely claiming a patent is punishable with a fine under section 120 of the Patents Act, 1970.
Is a provisional application published?
Not by itself. Publication happens 18 months from priority for the application as a whole, once the complete specification is filed. A provisional abandoned without a complete specification is not published.
Can I add new features in the complete specification?
Yes, but claims to new matter that was not fairly described in the provisional take the later date of the complete specification, not the provisional’s date.
Should a startup file a provisional?
Often, yes, because it secures a date cheaply while the product is still changing, and the startup fee tier applies. The 12-month deadline must be budgeted for, including any filings abroad.
Can I file a provisional application myself?
The law allows it. The risk is in the content: a provisional that does not describe the invention well enough gives a priority date that the later claims cannot use.
Official sources
Further reading
- Provisional vs Complete Specification: Which Should You File First?What each specification must contain, what a provisional really protects, and the fixed 12-month deadline.
- Foreign Filing Licence: What Indian Inventors Must Know Before Filing AbroadSection 39 in plain terms: the six-week rule, Form 25 permission, the common traps and the penalties for breach.
- PCT Deadlines and Costs from India: 12, 30 and 31 Months (2026)The 12, 30 and 31-month PCT deadlines from India, the decisions at each one, and when the official fees and other costs fall.