Section 30 of the Patents Act, 1970
Anticipation by previous communication to Government
Section 30 says that telling the Government about an invention, or letting it be investigated, does not by itself destroy novelty.
Official legal text
The verbatim statutory text of this provision is reproduced from the official source and checked by our legal reviewer before it is published here. Until that check is complete for this page, read the exact wording directly from the official source linked below — it is the only version that governs.
Treat this page as a guide. The provision as officially published, along with the Gazette notifications that apply to it, remains the governing text and overrides any simplification here.
What this section says, in plain language
Many inventions are shown to a government body before any patent application is filed. A defence laboratory may be asked to evaluate a sensor. A ministry may run a technology mission. A public funding agency may want a technical dossier before releasing a grant. A state agency may test a device for approval. Under the ordinary rules of novelty, handing over a full technical description like this looks like a disclosure that could sink a later application.
Section 30 removes that risk. Communicating the invention to the Central Government, or to a person authorised by the Central Government to investigate the invention or its merits, is not treated as anticipation. Nor is anything done in consequence of that communication. So the officials studying it, circulating it inside the department, testing it and writing an evaluation report do not, by that fact alone, destroy novelty.
The boundaries matter. The protection is tied to the Government and to persons the Government has authorised to investigate. It does not cover a demonstration to a private buyer, a stall at a trade fair, a press interview, a pitch to investors or a public tender document that a competitor can download. If the disclosure travelled beyond the protected channel, that wider disclosure has to be judged on its own.
Section 30 also does not affect other consequences of dealing with the Government. If the invention is relevant for defence purposes, secrecy directions can follow under section 35. If the Government later wants to use the invention, that is governed by section 100 and the rest of Chapter XVII, which deal with terms and payment. Section 42 separately protects the Controller when information about an application is passed to the Government.
In practice the section works only as well as the paperwork. Keep a record of what was communicated, to whom, on what date, and under what authority the recipient was acting. A covering letter with a scheme reference or an official authorisation number is worth far more later than a memory of a meeting.
Why this section matters
Inventors, MSMEs, universities and laboratories that submit technical proposals to government departments, public evaluation committees or state-run funding schemes before filing.
It matters at the moment of submission, and later whenever an examiner or an opponent points to that submission as an earlier disclosure.
It creates a statutory exclusion: a protected communication to the Government cannot by itself be treated as anticipation of the invention.
An applicant may wrongly believe novelty is already lost and abandon a good invention, or may fail to keep the proof needed to show the disclosure fell inside the protected channel.
How it works in practice
A sensor submitted to a government evaluation committee
Vayu Sensors LLP of Hyderabad develops a low-power sensor that detects gas leaks in domestic pipelines. In January it submits a full technical dossier, including circuit diagrams and calibration data, to a Central Government technical committee set up to evaluate safety devices under a national scheme. The committee tests the sensor for three months and prepares an internal evaluation report. Vayu files its Indian patent application in June. Two years after grant, a competitor files a post-grant opposition and argues that the invention was disclosed to the committee before the priority date, so it was not new. Vayu answers under section 30. It produces the scheme notification, the committee's authorisation letter, the covering letter recording what was submitted, and proof that the dossier went nowhere else. The communication to the Government and the committee's testing are not treated as anticipation, and the opposition has to stand or fall on the other prior art it cites.
Simplified illustration only. Actual legal outcomes depend on the facts.
Key points to remember
- Communicating an invention to the Central Government does not, by itself, count as anticipation.
- The protection extends to persons the Government authorises to investigate the invention or its merits.
- Steps taken in consequence of that communication, such as official testing and internal reports, are also covered.
- Disclosures outside the protected channel, including private buyers and open tenders, are judged separately.
- Secrecy directions under section 35 and government use under section 100 are separate consequences the section does not touch.
Common mistakes and misunderstandings
- Treating any dealing with a public body as protected. A state tender portal that publishes your specification for open download is a public disclosure, not a protected communication.
- Assuming the protection also applies abroad. Foreign offices apply their own novelty rules to the same submission, and many of them have no equivalent exception.
- Relying on the section instead of filing. It answers one citation; it does not stop an independent third party from filing first on similar subject matter.
Connected provisions
- ActSection 29Anticipation by previous publication
- ActSection 34No anticipation if circumstances are only as described in sections 29, 30, 31 and 32
- ActSection 35Secrecy directions relating to inventions relevant for defence purposes
- ActSection 42Savings respecting disclosure to Government
- ActSection 100Power of Central Government to use inventions for purposes of Government
Indian patent law works in two layers. The Act carries the substance and the Rules carry the machinery. Because the layers are amended by different processes and at different times, they are presented in separate blocks instead of being merged into one description.
Forms, deadlines and fees
We do not publish fee amounts. The First Schedule sets them, and they differ by category of applicant, such as a natural person, a startup, a small entity or another applicant, and by the mode of filing. Check the Schedule currently in force before you calculate anything. How Indian patent fees work.
Related judgments
This part of the page is reserved for summaries of decided cases. They are added one at a time, after review by a person qualified to confirm that the summary matches the judgment. Nothing has been cleared for this provision so far, so there is nothing to show. How case notes are prepared.
Questions people ask about Section 30
Does section 30 cover disclosures to a State Government or a public sector company?
The section is framed around the Central Government and persons authorised by it to investigate the invention or its merits. Whether a particular body falls inside that description depends on how it was constituted and what authority it was acting under, so it has to be checked in each case. The safe practical course is to treat the exception as narrow, keep the authorisation paperwork, and file the patent application before or immediately after any submission rather than relying on the exception.
If I submit an invention to a government scheme, will it be kept secret?
Secrecy in that sense comes from the terms of the scheme, from any confidentiality undertaking the department gives, and from official record rules. Section 30 is not a confidentiality provision. It only says that the communication and what follows from it are not treated as anticipation of your invention. If the invention has defence significance, a separate machinery under Chapter VII may apply and the Controller can restrict publication under section 35.
Should I still file before approaching a government department?
Filing first is the stronger position. Section 30 answers one specific objection, but it does not give you a priority date, it does not stop someone else filing on similar subject matter, and it does not help you in other countries. A provisional specification filed before the submission secures a date in India and, with section 33, protects you against use or publication that follows during the twelve months you have to file the complete specification.
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