Can I File a US Provisional Patent Before India?

October 13, 2026 · 22 min read · AI Patent Drafting

No, generally not, if you are a resident of India. Section 39 of the Patents Act, 1970 requires either that a patent application for the same invention, including a provisional patent application, was filed in India at least six weeks before filing any US patent application, or that you first obtain written permission from the Controller. This permission, known as a Foreign Filing Licence (FFL), is requested using Form 25. No published IPO statement specifically exempts US provisional patent applications from this requirement, so the prudent interpretation is that filing a US provisional patent application first, without satisfying either condition, may violate Section 39.

Key takeaways

- Section 39 is a filing-order rule, not a subject-matter rule. It applies to software, devices and formulations alike, and the six weeks is a minimum gap between two filing dates not a waiting period you can start counting from any point you choose.

- The trigger is residence, not nationality. Section 39(3) exempts an invention for which protection was first filed outside India by a person resident outside India. It does not exempt an applicant resident in India.

- A US provisional is an application filed at the USPTO that gets a filing date. Nothing in the Act carves provisionals out, and no published IPO decision settles the point so treat a provisional as caught.

- Filing abroad without compliance exposes you to three separate consequences: the Indian application is deemed abandoned, any granted patent is liable to be revoked under Section 64, and Section 118 carries imprisonment of up to two years, a fine, or both.

- A Form 25 permit costs ₹1,600 for individuals, startups, small entities and educational institutions filing electronically (₹1,750 on paper), and ₹8,000 (₹8,800 on paper) for all other entities, as of January 2025. Rule 71(2) gives the Controller 21 days to dispose of the request. Silence is not permission.

- Whether you file in India first, seek a permit first, or go the PCT route is a decision for a registered patent attorney or agent. This article explains the rules; it does not apply them to your invention.

What does Section 39 of the Patents Act, 1970 actually require of a resident applicant?

Section 39(1) prohibits a person resident in India from making any application outside India for the grant of a patent for an invention unless two conditions are both met. First, an application for a patent for the same invention was made in India not less than six weeks before the foreign filing. Second, either no secrecy direction under Section 35 is in force for that Indian application, or every such direction has been revoked.

The operative text, as amended up to 1 August 2024, reads:

• "No person resident in India shall, except under the authority of a written permit sought in the manner prescribed and granted by or on behalf of the Controller, make or cause to be made any application outside India for the grant of a patent for an invention unless (a) an application for a patent for the same invention has been made in India, not less than six weeks before the application outside India; and (b) either no direction has been given under sub-section (1) of section 35 in relation to the application in India, or all such directions have been revoked."

Patents Act, 1970, consolidating all amendments to 1 August 2024

• Notice the structure: it is a prohibition with two alternative exits. You either satisfy the six-week-plus-no-secrecy-direction test, or you hold a written permit. There is no third route, and there is no exemption for "small" filings or for filings made in a hurry.

Who counts as "resident in India"?

Residence is the hinge, and the Act does not define it for Section 39 purposes. Section 39(3) provides that the section does not apply in relation to an invention for which an application for protection has first been filed in a country outside India by a person resident outside India. Both elements matter: the person must be resident outside India, and the protection must have been filed abroad first. An applicant resident in India gets nothing from it.

Practitioner guidance reads an Indian-registered company as resident in India even where some of its engineers sit abroad that is commentary rather than a statutory definition, so check it against your own facts. This is where cross-border teams get caught. If a US or Singapore parent files a provisional application naming a Bengaluru-based engineer as an inventor, the filing is made by or on behalf of a resident inventor, and Section 39 is engaged — before anyone in India has made a decision about anything. Firms that handle these matters describe it as the single most common breach pattern they see.

Does a US provisional count as "an application outside India"?

Section 39(1) is drafted around "any application outside India for the grant of a patent." A US provisional application is filed at the USPTO, receives a filing date, and is the document a later US non-provisional claims benefit from. The Act does not carve provisional applications out, and we could not locate a published IPO statement or decision that treats them differently.

The conservative reading and the one practitioners act on is that a US provisional is caught. If you want a definitive answer on your specific facts, that is a question for a registered patent attorney or agent, not for an article.

What does "the same invention" mean in Section 39(1)(a)?

The Indian filing and the foreign filing must be for the same invention. This is not a formal word-for-word test; it is about whether the Indian filing actually supports what you are taking abroad. A thin Indian provisional that omits a feature you later claim in the US puts pressure on that condition. Draft the Indian provisional to cover what you intend to claim, not just the headline idea.

The six-week rule explained: which clock starts when, and what is a secrecy direction?

The six weeks are measured between two filing dates. Your foreign filing must sit at least six weeks after the Indian filing date of an application covering the same invention, and no Section 35 direction may be live at the moment you file abroad. The section speaks of "an application for a patent" made in India; most practitioners read that as including an Indian provisional specification, but no published decision we located settles the point, so treat it as the working assumption rather than a certainty. Either way, the Indian application has to exist and be dated.

Two practical points follow.

Six weeks means 42 days, and it is a floor, not a green light. Filing exactly on day 42 is lawful only if the secrecy position is clear. Filing on day 45 is not automatically safe either; it is safe if, and only if, both limbs of Section 39(1) are satisfied on the day you file.

The clock does not start when you instruct counsel, brief a foreign attorney, or pay a fee. It starts on the Indian filing date recorded on your filing receipt.

What is a secrecy direction?

Section 35 of the Act is generally read as allowing the Controller to give directions that an invention relevant for defence purposes must not be published or communicated, on conditions the Controller thinks fit the section is short, and worth reading in the Section 39(1)(b) makes the six-week route unavailable while such a direction is in force: you need either no direction at all, or all directions revoked.

Two consequences are easy to miss. A direction can issue after your Indian filing, so the six weeks may expire while you are still barred from filing abroad. And Section 41 provides that the Controller's orders giving secrecy directions are final and cannot be called in question in any court on any ground whatsoever. There is no appeal route to build into your timeline.

If a secrecy direction is issued, the realistic path is the permit route under Section 39(2), discussed below and that route has its own gate for defence inventions.

What is a foreign filing licence, and how do you request one? (Form 25, step by step)

A foreign filing licence is the Controller's written permission to file abroad without waiting out the six weeks. You request it in Form 25 under Section 39 read with Rule 71(1). Rule 71(2) requires the Controller to dispose of the request within 21 days of filing but that is a deadline on the office, not a deemed grant if you hear nothing back.

Here is what Form 25 asks you to supply:

1. Title of the invention.

2. Name and address of the applicant or applicants.

3. Name and address of any assignee, where rights have been assigned.

4. The countries or convention countries in which you intend to file.

5. A brief description of the invention, attached.

6. The reasons for making the application.

7. A declaration of truth, signed by the applicant or an authorised patent agent, addressed to the Controller of Patents at the relevant Patent Office.

Two details trip people up. The form is drafted on the assumption that you have already filed in India it contains a field for your Indian application number and date. The Section 39 permit route exists precisely for applicants who have not filed in India first, so practitioners strike that text out and proceed deliberately rather than leaving a blank. Second, fields 4, 5 and 6 are substantive: unnamed countries, a missing description, or vague reasons are the likely causes of a delay that pushes you past a foreign deadline.

Form 25 fee, as of January 2025 (IP India First Schedule):

The 10% step-up for physical filing comes from the proviso to Rule 7(1); small entities must also file Form 28 with fee-bearing documents. These figures were checked against the linked schedule in January 2025. Fees change re-check the schedule before you file.

How long does the permit take, and can you rely on silence?

Rule 71(2) sets 21 days from the date of filing the request. For inventions relating to defence or atomic energy, that 21 days runs from the date the Controller receives the Central Government's consent, and the Rule sets no outer limit on when that consent arrives. Practitioner firms report that ordinary permits are often granted in roughly seven to ten days, but that is an observation about practice, not a statutory service level.

Filing abroad on the assumption that silence equals permission is not supported by the Act, and it exposes you to the same consequences as filing with no permission at all. File Form 25 well before you need the answer, never on the day.

Which inventions can never get a foreign filing licence?

Inventions relating to atomic energy cannot be patented in India at all bars a patent for an invention relating to atomic energy falling within the relevant provision of the Atomic Energy Act, 1962. No permit will make a foreign filing for such an invention lawful. Read the section in the linked text rather than relying on this summary.

For defence-related inventions, Section 39(2) provides that the Controller shall not grant the permit without the prior consent of the Central Government. That consent may come, or it may not.

It is worth being blunt about the relationship between these gates and the six-week rule: the defence and atomic-energy filters sit on top of Section 39, they are not an off-ramp from it. Section 39 is a filing-order rule. It applies whatever you invented a scheduling app, a diagnostic device, a formulation. "My invention is not a defence secret" is not a defence; it is an answer to a question nobody asked.

What happens if you file abroad without permission?

Three consequences attach, and they come from different parts of the Act. Section 40 provides (the words in square brackets are the amending words, shown bracketed in the consolidated text):

> "Without prejudice to the provisions contained in Chapter XX, if in respect of an application for a patent any person contravenes any direction as to secrecy given by the Controller under section 35 [or makes or causes to be made an application for grant of a patent outside India in contravention of section 39], the application for patent under this Act shall be deemed to have been abandoned and the patent granted, if any, shall be liable to be revoked under section 64."

So: the Indian application is deemed abandoned not merely penalised, abandoned. Any patent already granted is liable to be revoked under Section 64. And because Section 40 operates "without prejudice to Chapter XX", the criminal exposure runs in addition.

That criminal exposure is Section 118: failure to comply with a Section 35 direction, or making an application in contravention of Section 39, is punishable with imprisonment for a term which may extend to two years, or with fine, or with both. Both provisions are in the consolidated Act.

Is a "technical breach" of Section 39 a defence?

There is a live argument, analysed by Cyril Amarchand Mangaldas, that a purely technical breach of Section 39 is not a "contravention" for the purposes of Sections 40 and 118. That question is genuinely contested.

Treat it as contested, not as a workaround. The consequences in Sections 40 and 118 are attached to the words of the statute, and whether a technical breach escapes them is a question for the Controller and, if it comes to it, the courts. It is not something to plan a portfolio around.

What evidence should you keep?

On the six-week route, the Indian filing receipt and its date are typically sufficient evidence of compliance no Form 25, no fee, no separate approval. On the permit route, the permit itself is the evidence. Either way, keep the document in the patent file. It is what a diligence process will ask for, and reconstructing it years later is painful.

Four filing orders compared: India first, permit first, PCT via India, PCT via a foreign receiving office

The last two rows are usually collapsed into one, and that is where people go wrong. "PCT is international, so it's fine" is the wrong conclusion.

The PCT-via-India row also carries an unresolved conflict. A reported Delhi High Court decision, Puneet Kaushik v. Union of India, is said to treat an international application filed from India as a foreign application whose filing date cannot precede the date the required permit is issued, regardless of how complete the application is. We have not verified that decision directly, and it sits awkwardly with the reading above. Until you or your counsel have checked the current position, treat PCT-from-India as an open question rather than a settled route.

One more point that applies to every row: each foreign filing needs its own footing. Practitioner reports of decisions on related filings (including patents of addition) suggest that compliance established for one application does not automatically cover a later, related filing.

A worked calendar: Indian provisional in week 0, US provisional in week 7, non-provisional at month 12

Below is the most common sequence for a founder who wants to file in both countries. Week 7 is a deliberate one-week cushion the legal floor is day 42, not week 7. It illustrates how the two 12-month clocks interact; it is not a recommendation, and individual filing strategy varies.

The headline planning point: there are two 12-month clocks and they start on different days. The Indian complete specification deadline runs from the Indian provisional filing date the period is set by Section 9 of the Act, which is worth reading in full rather than taking on trust. The US benefit window runs from the US provisional's own filing date. If you file the US provisional in week 7, those dates are roughly five weeks apart. Diarise the earlier one and treat it as the deadline.

This is where a single plain-English invention disclosure pays for itself. PatentProtector.ai turns one description into a structured draft that can be exported in Indian and USPTO formats, so a founder who files the Indian provisional first does not have to rewrite the description for the US provisional.

Does a US provisional filed from India still give you a 12-month priority date?

Yes provided the filing was lawful in the first place. Section 39 governs who may file where and in what order; it does not change how the USPTO treats a provisional that was properly filed. A lawfully filed US provisional sets a US filing date and opens a 12-month window in which to file a non-provisional claiming its benefit.

What a provisional does not give you is enforceable rights. It is a placeholder with a date on it, not a granted monopoly and the same distinction has teeth on the Indian side.

The difference between a priority date and rights you can enforce

A priority date is only worth what the document behind it can support. Two mechanisms break the link.

The first is Section 40. If the foreign filing contravenes Section 39, the Indian application is deemed abandoned. You may still hold a US filing date, but the Indian side of the portfolio is gone, and any Indian patent granted is liable to be revoked.

The second is the frozen provisional. AIPLA's Innovate article on foreign filing licences explains that an Indian provisional specification requires no claims and no abstract, but that it is a document on record which cannot be amended and is not published if no complete specification follows. If your US provisional describes a feature more fully than your Indian provisional does, and you later need the earlier Indian date for that feature, the thin document cannot be repaired. That is the concrete version of "a priority date is not the same as an enforceable right."

Five mistakes Indian founders make with cross-border filings

1. Filing the US provisional first because it is cheap and fast, intending to sort out India later. The USPTO provisional filing fee is $325 for a large entity, $130 for a small entity and $65 for a micro entity, as of the USPTO fee schedule effective 19 January 2025. The utility package that follows costs $2,000, $800 or $400 depending on entity size. That low entry cost is exactly what makes this mistake common.

2. Assuming Section 39 does not apply because the invention is software. It is a filing-order rule. Subject matter is irrelevant.

3. Looking only at where the CEO lives. What matters is whether the applicant, or the person making the filing, is resident in India. A foreign parent filing a provisional naming an Indian inventor can breach Section 39 before the Indian team has made a decision.

4. Treating IPO silence after Form 25 as permission. There is no deemed grant on day 21. If you have not received the permit, you do not have it.

5. Filing a PCT application at a foreign receiving office and assuming the "international" label solves it. Filing at the Indian Patent Office as receiving office is generally read as an Indian filing; filing at the USPTO, EPO or International Bureau is not and a reported Delhi High Court decision on PCT filings made from India points the other way on the first point too. Have counsel check the current position.

A sixth, quieter mistake: assuming one compliance step covers every later filing in the family. It does not.

How to draft both filings from one invention disclosure

An Indian provisional specification is a light document. It does not require claims or an abstract; a clear outline of the invention will do, provided the invention you later claim in the complete specification is properly described. Typical sections are field, background, objects, drawings and detailed description.

That lightness is an advantage and a trap. It is quick and inexpensive to file, but because it is a frozen record, the breadth of what you can claim later is capped by what you wrote on day one.

The practical approach most teams use: write one plain-English invention disclosure covering the problem, the components, the alternatives you considered, and the variants you want to keep open. Then produce the Indian provisional and the US provisional from that single source, rather than drafting the second one from memory months later. PatentProtector.ai is built for that workflow it has drafted 1000+ patents, is used by 1400+ inventors, and produces a first draft in IPO or USPTO format from a guided disclosure. It is SOC 2 Type II compliant and ISO 27001, ISO 42001 and GDPR compliant, with a 98% satisfaction rate and a 5-star Trustpilot rating. What it cannot do is decide your filing order; that call belongs to a registered patent attorney or agent.

Before you spend on either filing, get the draft

The filing-order decision and the drafting work can run in parallel. Start with the provisional draft to see what your disclosure actually looks like as a specification, and browse the pricing page to see what professional review covers and the demo for a walkthrough of the editor. If you want the sequence question answered and the draft reviewed together, book professional review and filing support from registered patent professionals then take the result to your own attorney or agent with a real document in hand instead of an idea.