If your invention intersects with defence technology, your patent application can be stopped from publication, grant, and foreign filing, without being rejected. That is the effect of a secrecy direction under Chapter VII of the Indian Patents Act, 1970 (Sections 35 to 42). When an invention is considered relevant to the defence of India, the Office of the Controller General of Patents, Designs and Trade Marks (CGPDTM) may issue a secrecy direction, and the application enters a suspended state: unpublished, ungranted, and restricted from foreign filing until further notice.
A secrecy direction is not a rejection. Your application stays alive under the direction, prosecution can continue up to a point, and specific financial protections apply during the suspension period. This guide covers every operative provision in Chapter VII: how a secrecy direction is triggered, what it does to your application, how it is reviewed and lifted, and what the consequences are for non-compliance.
What Triggers a Secrecy Direction Under Section 35
A secrecy direction applies when the Controller of Patents concludes that an invention is relevant for defence purposes. This conclusion can arise in two ways. The Central Government maintains a list of notified invention categories considered defence-relevant, and when an application falls within a notified class, the Controller acts on that notification. Where an application does not fall within any notified class but the invention still appears, based on the Controller’s assessment of defence relevance from the material available, to be defence-relevant, the Controller may issue a direction.
A third pathway exists under Section 35(3): the Central Government may itself notify the Controller at any time before the grant of the patent that an invention not already under a direction is relevant for defence. Once so notified, the Controller issues a direction and reports back to the Central Government. This means a direction can be imposed mid-prosecution, even after examination has begun.
Defence-relevant subject matter in practice spans a wide range of technology, including weapons systems, radar and sonar technology, cryptography, aerospace propulsion, and certain dual-use technologies. There is no publicly available exhaustive list of notified categories, which means applicants in these domains should assess their filings carefully before and after submission.
A secrecy direction can be imposed at any stage before grant, including after examination has begun. Applicants in defence-adjacent technology fields should anticipate this possibility from the date of filing.
What Happens After a Direction Is Issued: Notice and First Review
Once the Controller issues a direction under Section 35(1), the applicant receives written notice from the Controller. Simultaneously, the Controller gives formal notice of the application and the direction to the Central Government. The Central Government then considers whether publication of the invention would be prejudicial to the defence of India.
If the Central Government concludes that publication would not prejudice defence, it notifies the Controller, who revokes the direction and informs the applicant accordingly. This first review is the fastest route out of a secrecy direction. If the Central Government raises no objection, the direction is lifted and prosecution resumes on its normal timeline.
If the Central Government does not revoke, the direction continues in force and the periodic review mechanism under Section 36 takes over.
Periodic Review of Secrecy Directions: Section 36
A secrecy direction does not run indefinitely without scrutiny. The Central Government must reconsider whether the invention remains relevant for defence purposes at intervals of six months. An applicant may also request reconsideration at any time; if the Controller finds the request reasonable, the matter is referred to the Central Government for review.
On reconsideration, if the Central Government concludes that publication would no longer prejudice defence, it notifies the Controller, who revokes the direction. A separate automatic trigger applies to foreign applicants: where the invention covered by the direction is found to have been published outside India, the Central Government must give notice to the Controller to revoke.
The result of every reconsideration under Section 36 must be communicated to the applicant within 15 days of the notice being received by the Controller. This is one of the few hard timelines that operates in the applicant’s favour while a direction is in force.
Effect on Your Application While a Direction Is in Force: Section 37
Section 37 sets out exactly what a secrecy direction does and does not do to your application. The Controller cannot refuse the application for as long as the direction stands: it is kept alive. No statutory appeal lies from any order the Controller makes while the direction is in force, though constitutional remedies under Articles 226 and 32 may be available in limited circumstances such as mala fide exercise of power or jurisdictional error.
Prosecution is not entirely frozen. The application may proceed through examination and, where applicable, reach the stage of being found “in order for grant.” Responses to an Examination Report can still be filed while the direction is in force; the direction suppresses publication and grant, not the examination dialogue itself. However, the specification is not published, and no patent is granted while the direction remains in force. If you are unfamiliar with what the examination stage involves, the patent examination procedure in India covers the full sequence. One important downstream effect: the request for examination deadline under Section 11B is reset on revocation of a secrecy direction, meaning the prescribed period runs afresh from the date the direction is lifted.
Two financial protections apply during the suspension period. First, if the Government makes use of the invention while the direction is in force, the compensation provisions under Sections 100, 101, and 103 apply as if the patent had already been granted. Second, if the applicant has suffered hardship, the Central Government may pay solatium: a discretionary payment assessed against the novelty and utility of the invention, the purpose for which it was designed, and any other relevant circumstances. These provisions sit alongside the compulsory licensing framework as one of the mechanisms the Act uses to protect applicants where government interests override normal patent rights. In practice, solatium claims are rarely pursued and the standard of hardship required has not been authoritatively tested. Applicants should treat it as a backstop provision rather than a primary remedy.
A third protection: when the patent is eventually granted, no renewal fees are payable for any period during which the secrecy direction was in force. The applicant does not pay to maintain a right they were legally prevented from exercising.
What Happens When a Direction Is Revoked: Section 38
Revocation does not automatically reset all deadlines. When the Controller revokes a direction, any prescribed time limit that lapsed during the period the direction was in force does not defeat the application by default. The Controller has the power to extend any timeline prescribed by the Act or the Rules, including limits that had already expired, subject to conditions the Controller considers appropriate.
This protection is significant for long-running secrecy directions. An applicant whose prosecution was suspended by government action for several years should not face dismissal because standard timelines ran out during the suspension. The Controller’s discretion under Section 38 is the practical remedy.
On the day a revocation notice is received, three immediate actions apply. First, confirm the new request for examination deadline under Section 11B, which runs afresh from the revocation date. Second, petition for extension of any examination response periods or other procedural steps that lapsed during the direction period. Third, verify whether the revocation clears the path for foreign filing without a separate licence or whether a new Section 39 assessment is required given any changes in the invention or target jurisdictions since the original application was filed.
The Foreign Filing Restriction: Section 39
Although governed separately under Section 39 (Chapter VI rather than Chapter VII), the foreign filing restriction is inseparable from secrecy direction compliance in practice. A resident of India cannot file a patent application outside India for the same invention unless one of two conditions is met: either an application was filed in India at least six weeks before the foreign filing and no secrecy direction is in force, or the Controller has granted written permission via a foreign filing licence.
The permission request must be made in writing to the Controller in the prescribed manner. The Controller must dispose of it within 21 days from the date of filing (Rule 71). Where the invention relates to defence or atomic energy, the Controller cannot grant permission without the prior consent of the Central Government. Section 39 does not apply to an invention for which a person resident outside India first filed abroad before any Indian application was made.
Filing a PCT application without a foreign filing licence when the six-week window has not yet passed is one of the most common compliance errors made by Indian applicants. The consequence under Section 40 is deemed abandonment of the Indian application.
The interaction with PCT filings requires particular attention. If an Indian applicant files a PCT international application before six weeks have elapsed from the Indian priority date, a foreign filing licence under Section 39 must be obtained first. Without it, the Indian Patent Office acting as Receiving Office will not treat the filing as an international application. Filing directly with the International Bureau in Geneva does not bypass Section 39; on the contrary, a violation filed through the IB may not surface until the Indian application is already deemed abandoned, making it harder to identify and address.
Consequences of Contravention: Sections 40 and 118
Section 40 treats any violation of a secrecy direction under Section 35, or any foreign filing made in contravention of Section 39, as deemed abandonment of the Indian patent application. A patent already granted on that application becomes liable to revocation under Section 64. The civil consequences arise automatically from the contravention, with no further order required.
The criminal exposure under Section 118 is independent and additive. A person who violates Section 35 directions or contravenes Section 39 faces imprisonment for a term extending to two years, a fine, or both. Civil and criminal liability can therefore arise from the same act. The statute does not expressly provide a de minimis threshold or a good-faith defence, though courts retain their inherent jurisdiction to consider intent in appropriate cases.
Finality of Orders: Section 41
Section 41 bars ordinary statutory challenge: every order of the Controller issuing a secrecy direction and every order of the Central Government under Chapter VII is stated to be final and not callable in question in any court. In practice, this closes the standard appellate route. Constitutional remedies may still be invoked in limited circumstances, including mala fide exercise of power, jurisdictional overreach, or a demonstrable procedural violation, through the writ jurisdiction of the High Courts (Article 226) or the Supreme Court (Article 32). That route is a last resort for legal counsel, not a routine channel.
Section 42 completes the chapter by preserving the Controller’s ability to disclose application information to the Central Government for the purpose of evaluating, issuing, or revoking a secrecy direction. The Controller is not in breach of any confidentiality obligation under the Act by making such a disclosure.
Key Timelines at a Glance
Four deadlines govern the practical management of an application affected by Chapter VII.
| Trigger / Event | Deadline |
| Periodic review of secrecy direction | Every 6 months (Section 36) |
| Controller to communicate review result to applicant | Within 15 days of receiving notice (Rule 72) |
| Controller to dispose of foreign filing licence request | Within 21 days of filing (Rule 71) |
| Automatic safe harbour — no licence needed if India filing preceded foreign filing by | At least 6 weeks and no direction in force (Section 39(1)) |
An application caught by a secrecy direction is examined but unpublished, found allowable but ungranted, and protected from refusal, all simultaneously. The periodic review, the solatium provision, the renewal fee waiver, and the post-revocation time extension collectively limit the damage a secrecy direction can cause. The provision that demands the most operational attention from both first-time filers and in-house IP teams remains Section 39: a missed foreign filing licence carries deemed abandonment and criminal liability, with no statutory appeal available once a secrecy direction is in force.
If your invention may fall within defence-sensitive categories or involves cross-border filing, early compliance review is critical.
This article reflects Indian patent law as of March 2026 and is provided for general information only; it does not constitute legal advice on any specific situation and should not be relied upon as a substitute for advice from a qualified patent attorney.
Frequently Asked Questions
No. Section 37(1)(a) expressly prevents the Controller from passing an order refusing the application for as long as the direction is in force. The application is suspended, not terminated. Once the direction is revoked, prosecution resumes and the normal grant pathway reopens.
Yes. The direction suppresses publication and grant; it does not freeze the examination dialogue. The application may proceed through examination, responses to an Examination Report can be filed, and the application can reach the stage of being found “in order for grant.” The specification simply cannot be published and the patent cannot be sealed until the direction is lifted.
There is no publicly available exhaustive list of notified categories. The Central Government communicates the categories to the Controller, and the Controller applies that list to incoming applications. Applicants in technology areas such as weapons systems, radar, sonar, cryptography, aerospace propulsion, satellite communications, and dual-use electronics should assume the possibility of a direction and factor it into their prosecution and foreign filing timelines from the date of first filing.
Not through ordinary statutory channels. Section 41 makes directions final and bars challenge in any court under the standard appellate route. Constitutional remedies remain a theoretical last resort: a writ petition before a High Court under Article 226, or the Supreme Court under Article 32, may be available in cases of mala fide exercise of power, jurisdictional overreach, or procedural violation. Short of that, the internal reconsideration mechanism under Section 36 is the only available route.
Where the application was filed by a foreign applicant and the invention is found to have been published outside India, Section 36 requires the Central Government to revoke the direction. The rationale is that suppressing the Indian application serves no defence purpose once the information is already in the public domain abroad. For Indian applicants, prior foreign publication would typically indicate a Section 39 violation had already occurred, which triggers the deemed-abandonment consequence under Section 40.
The 20-year patent term under Section 53 runs from the date of filing of the application, not from the date of grant. A secrecy direction does not pause or extend that term. What Section 37(3) does protect is renewal fees: no renewal fees are payable for any period during which the direction was in force, so the applicant does not bear the cost of maintaining a right they were legally prevented from exercising.
Section 39(3) expressly provides that the section does not apply to an invention for which an application for protection was first filed in a country outside India by a person resident outside India. Foreign applicants who first file in their home country and subsequently file in India are not bound by the Section 39 foreign filing restriction. The restriction applies only to persons resident in India at the time of making the foreign application.