Invention Secrecy Act & Patent Secrecy Orders

The Invention Secrecy Act of 1951 (35 U.S.C. §§ 181-188) gives the U.S. government a mechanism, entirely separate from patent examination on the merits, to prevent a patent application from publishing or issuing when its disclosure would be "detrimental to the national security." Every application filed at the USPTO is screened for subject matter that might trigger this review, and applications connected to federally funded defense, energy, nuclear, or intelligence-related research are disproportionately likely to be flagged. This guide covers how a secrecy order is imposed, what it legally requires of an applicant, why it matters specifically for federally funded university research, and the practical steps a technology transfer office (TTO) needs to take when one lands on a disclosure. It does not repeat CASRAI’s existing coverage of general patent novelty under 35 U.S.C. § 102, trade secret protection, or trademark — see the Trade Secrets vs. Patents comparison for that ground. A secrecy order is a distinct, patent-specific restriction imposed by the government itself, not a choice an inventor or institution makes about how to protect an invention.

What the Invention Secrecy Act actually does

Enacted in 1951 and codified as Chapter 17 of the Patent Act, the statute authorizes the USPTO Director, on the recommendation of a "defense agency" (in practice, the Department of Defense, Department of Energy, NASA, and other agencies with national-security equities, coordinated through the USPTO’s Licensing and Review office), to order that an application be kept secret and that its publication or the grant of a patent be withheld for as long as the national interest requires. The core provisions:

35 U.S.C. § 181 — authorizes the secrecy order itself: withholding publication and grant of a patent, and restricting disclosure of the invention’s subject matter, when a defense agency determines disclosure would be detrimental to national security.
35 U.S.C. § 182 — deems an application abandoned if the applicant, without authorization, publishes or discloses the invention, or files a foreign application, while a secrecy order is in effect.
35 U.S.C. § 183 — gives an applicant whose invention is used by the government during the order, or whose application is delayed by the order, a right to apply for compensation for the resulting damage and for reasonable use of the invention. In practice this compensation route is rarely exercised and involves a separate administrative/court claims process, not something a TTO resolves on its own.
35 U.S.C. § 184-185 — the foreign-filing license requirement, covered in its own section below.
35 U.S.C. § 186 — criminal penalties for willfully violating the foreign-filing bar or knowingly disclosing subject matter under a secrecy order: up to a $10,000 fine, up to two years’ imprisonment, or both, on conviction.
35 U.S.C. § 187-188 — limited exemptions for persons acting under government contract or authorization, and rulemaking authority, implemented in 37 C.F.R. Part 5.

A secrecy order is not a rejection on the merits and it is not a statement that the invention is unpatentable — prosecution simply freezes. The application is not published at the normal 18-month mark, no patent issues while the order is active, and the file is withheld from public inspection.

How a secrecy order gets imposed

Every newly filed U.S. patent application passes through an initial USPTO screening for subject matter that might implicate national security, historically cross-referenced against a classified Patent Security Category Review List used by referral agencies. Two paths lead to an order:

Referral and review. If screening flags an application, the USPTO refers it to the relevant defense agency (or agencies) for review. That agency has a limited statutory window to request a secrecy order; if none is requested, prosecution proceeds normally.
Agency-initiated review of federally funded work. Where the underlying research was performed under a federal contract, grant, or classified program — DoD, DOE/NNSA, NASA, and intelligence-community-funded work most commonly — the funding agency itself may flag the invention disclosure or resulting application for secrecy review, sometimes before the application is even filed, as part of its own technical-data or classification review process.

An order, once imposed, runs for one year from issuance and can be renewed for additional one-year periods for as long as an agency certifies the national interest still requires it — there is no fixed statutory expiration. Some orders imposed decades ago remain in effect today because they are renewed annually rather than automatically lapsing. The Federation of American Scientists’ Project on Government Secrecy tracks the USPTO’s own annual reporting on this program; as of the end of fiscal year 2025 there were 6,543 secrecy orders in effect, with roughly 100 new orders imposed and a much smaller number rescinded that year — a program that adds orders faster than it removes them (source: USPTO Invention Secrecy Activity report, via FAS Secrecy News, sgp.fas.org/othergov/invention). Secrecy orders are not limited to inventions with an identifiable government funding source: the USPTO’s own screening occasionally flags applications from independent inventors or private companies with no federal contract at all — sometimes called "John Doe" secrecy orders in commentary on the program — but federally funded research remains the category a research institution’s TTO is most likely to encounter directly.

What a secrecy order means for federally funded university research

For a university receiving DoD, DOE, NASA, or intelligence-community funding, a secrecy order intersects directly with obligations that already exist under the Bayh-Dole Act and the sponsoring agreement, and it overrides the normal academic expectation of open publication:

Publication freeze. The inventor(s) and institution may not publish, present, or otherwise disclose the invention’s subject matter without authorization — this reaches conference presentations, journal manuscripts, theses and dissertations, and even routine lab-meeting or collaborator communication with anyone not already properly informed and cleared to know. Unauthorized disclosure risks application abandonment under § 182 and, if willful, criminal exposure under § 186.
No foreign filing. A secrecy order automatically bars filing any corresponding foreign patent application (or PCT application designating other countries) for as long as the order remains in effect — see the foreign-filing section below.
No patent issuance, no publication. The application does not publish at 18 months and cannot proceed to grant, so the institution has no issued patent to license, assign, or use to establish priority publicly, for however long the order runs — potentially years, given the renewal mechanism above.
Student and thesis complications. A graduate student whose thesis chapter covers the subject matter of an application under secrecy order may need an embargo well beyond a normal patent-pending delay, coordinated with the graduate school and often requiring institutional legal or export-control office involvement, not just the TTO.
Interaction with existing disclosure obligations. Bayh-Dole’s invention-reporting timelines to the funding agency (see CASRAI’s iEdison invention-reporting guide) continue to apply; a secrecy order does not suspend the institution’s reporting duty to the agency, only public disclosure and foreign filing.

A secrecy order is also legally and procedurally distinct from export-controlled research under ITAR/EAR or from Controlled Unclassified Information marking, even though the same federally funded project can trigger more than one of these simultaneously. A secrecy order is issued under Title 35 against a specific patent application by the USPTO on a defense agency’s recommendation; ITAR/EAR classify an item or technology for export-licensing purposes under a different statutory scheme; CUI is a document-marking regime under a separate executive order and NIST framework. See CASRAI’s guides on export control (EAR/ITAR) and international research collaboration and 32 CFR Part 117 (NISPOM) for those adjacent but separate obligations — a research institution working in these areas should expect to track secrecy-order status, export-control classification, and CUI/classification markings as related but independently managed compliance items, not a single combined process.

Foreign filing licenses (35 U.S.C. §§ 184-185)

Separately from the secrecy-order mechanism, any invention made in the United States requires a license before a corresponding application is filed in a foreign country, whether or not the invention was ever flagged for national-security review. In practice this requirement is satisfied automatically in the large majority of cases:

Filing a U.S. application itself triggers an automatic foreign-filing license under 37 C.F.R. § 5.11, confirmed on the official filing receipt, unless the invention falls within a category (e.g., subject to a secrecy order, or within categories referable to a defense agency) requiring a license be separately requested.
Where no application has been filed at all, or the automatic license does not apply, six months after the U.S. filing date (or invention date, if no U.S. application was filed) a license to file abroad arises automatically by operation of § 184 if no secrecy order has issued.
An applicant needing to file abroad sooner — common where foreign priority deadlines are tight — can petition for an expedited foreign-filing license under 37 C.F.R. § 5.12(b), typically processed quickly when no national-security flag exists.

Filing abroad without the required license is not a minor procedural lapse: under 35 U.S.C. § 185, any resulting U.S. patent can be held invalid, and under § 186 a willful violation carries the same criminal exposure (up to $10,000 and/or two years) as violating a secrecy order directly. For a TTO managing PCT or direct foreign filings on federally funded inventions, confirming the foreign-filing license status — not just assuming it because a U.S. application was filed — belongs in the docketing checklist alongside the deadlines covered in CASRAI’s IP docketing guide.

Practical implications for technology transfer offices

Most institutions will never see a secrecy order — the program is a small fraction of total U.S. patent filings and concentrated in specific technical areas (cryptography, certain sensor and detection technologies, nuclear and directed-energy topics, some quantum and space-adjacent work). Where a TTO’s portfolio does include federally funded defense, energy, or intelligence-adjacent research, a practical checklist:

Flag likely-sensitive disclosures early. Coordinate with sponsored programs and any institutional export-control or classified-research office when an invention disclosure arises from a DoD, DOE/NNSA, NASA, or intelligence-community award, particularly one already involving export-controlled or classified inputs.
Treat a secrecy order as an immediate hold, not a delay to manage quietly. Notify all co-inventors, collaborators, and any co-authors of related manuscripts in progress immediately; halt submission or presentation of anything covering the application’s subject matter; involve institutional counsel.
Track renewal status annually. Because orders renew rather than auto-expire, build the order into the same docketing/renewal tracking used for maintenance fees and prosecution deadlines (see IP renewals) — an order that has quietly persisted for years still fully restricts publication and foreign filing.
Don’t conflate the order with export control. A secrecy order does not by itself establish that the underlying technology is ITAR- or EAR-controlled, and resolving one does not resolve the other; each requires its own determination.
Preserve the compensation-claim option where applicable. If the delay or government use of the invention under the order causes measurable financial harm, § 183 provides a compensation route — this is a specialized claims process best handled with counsel experienced in the area, not a routine TTO function.

Practical implications for researchers

For an individual researcher or graduate student, the practical reality of a secrecy order is blunt: nothing covering the flagged subject matter can be published, presented, or discussed outside an authorized circle until the order is rescinded, regardless of career-stage pressure to publish or defend a thesis on a normal timeline. That means routing anything that might touch the subject matter through the TTO and institutional counsel before submission to a journal, conference, preprint server, or thesis committee, and flagging the possibility early with a research advisor or program officer if working on federally funded defense-, energy-, or intelligence-adjacent technology where a secrecy review is a realistic prospect.

Frequently asked questions

Does a secrecy order mean my invention isn’t patentable?

No. A secrecy order suspends publication and grant; it says nothing about whether the invention meets the ordinary patentability requirements under 35 U.S.C. § 102 or § 103. Examination on the merits can continue administratively even while the order withholds publication and issuance.

How long does a secrecy order last?

One year initially, renewable in additional one-year increments for as long as a defense agency certifies the national interest requires it — there is no fixed statutory maximum, and some orders have remained in effect for decades.

Can a secrecy order be imposed on privately funded research with no government connection?

Yes. Because every U.S. application passes through the same initial screening, an application with no federal funding source at all can still be flagged and ordered secret if its subject matter matches national-security review criteria, though federally funded defense-, energy-, and intelligence-related research is disproportionately represented among orders issued.

Does a secrecy order stop us from filing a provisional application?

No — the order applies to whatever application triggers it and controls what happens next (no publication, no foreign filing, no grant while it’s active); it doesn’t retroactively prevent the U.S. filing that led to the review. See CASRAI’s provisional patent application guide for how the provisional filing itself works.

Is a secrecy order the same thing as classifying the research?

No. A secrecy order is a Title 35 patent-prosecution restriction issued by the USPTO on a defense agency’s recommendation. Classification of the underlying research itself, CUI marking, and export-control status under ITAR/EAR are separate legal regimes that can apply to the same project independently — see CASRAI’s guides on NISPOM and export control (EAR/ITAR).