All MPEP Chapters

Chapter 100

Secrecy, Access, National Security, and Foreign Filing

Chapter 100 covers two heavily tested areas: (1) access and confidentiality of patent applications, and (2) foreign filing licenses (FFLs). The core rule is that unpublished applications are confidential — assume no public access unless a specific exception applies.


Core Concepts

Applications Are Confidential — 35 USC 122(a) Unpublished applications are confidential. Access allowed only under specific exceptions in 37 CFR 1.14. Patent Bar mindset: unpublished = assume NO public access unless exception applies.

Published vs Unpublished Published applications, published abandoned applications, and issued patents are open to public inspection. Unpublished applications are NOT accessible. Trap: even published pending applications — USPTO may only provide copies, not the actual paper file.

Most Important Access Exceptions

  1. Benefit claimed under 35 USC 119(e), 120, 121, 365(c), or 386(c) — earlier application may become accessible. Shortcut: Benefit claim opens access.
  2. Incorporated by reference — only the incorporated PORTION becomes accessible, not the entire application.
  3. Published PCT application — publication can create access rights to related US applications.

Status Information — MPEP 102 Even without full access, public may learn: pending/abandoned/patented status, whether published, application number, filing date, continuity relationship. Trap: status information does not equal full access.

Who May Authorize Access Under 37 CFR 1.14(c): applicant, practitioner of record, assignee, inventor, or certain named practitioners.

Power to Inspect Must specifically identify application and authorized person. Generally limited to one application. General authorization is often insufficient.

Petition for Access — 37 CFR 1.14(i) Third party may petition if: access necessary to carry out Act of Congress, OR special circumstances exist.

Foreign Filing Licenses — Very High Yield Core Rule — 35 USC 184: If invention made in US, cannot file abroad until 6 months after US filing OR FFL granted. FFL requirement depends on where invention was MADE, NOT citizenship.

Automatic FFL petition considered filed with US application — but license is NOT automatically granted. Must verify on filing receipt.

No FFL required when: invention not made in US, OR US application filed more than 6 months ago AND no secrecy order.

Consequences of Improper Foreign Filing — 35 USC 185/186 Can bar US patent and invalidate issued patent. Criminal penalties: fine and/or imprisonment. Patent may survive if filing was error AND invention not subject to secrecy.

Retroactive FFL — 37 CFR 5.25 Petition available for good-faith errors. Must show: verified statement, explanation of error, countries and dates, diligence after discovery. Must show facts — not conclusions.

Secrecy Orders — 35 USC 181 Issued when disclosure would harm national security. Effects: application not published, patent withheld, foreign filing restricted. Even after final rejection: prosecution must continue. Appeal not heard until order removed.

Three types: Type I (some foreign filing allowed), Type II (classified), Type III (general).

PCT Confidentiality Before PCT publication: no third-party access. After publication: some access under 37 CFR 1.14(g).


Key Rules

1.Unpublished applications are confidential — assume no public access unless exception applies
2.Benefit claim under 119(e)/120/121 opens access to earlier unpublished application
3.Only the incorporated portion becomes accessible when partially incorporated by reference
4.FFL required for invention made in US — depends on place of invention, NOT citizenship
5.Automatic FFL petition filed with application but NOT automatically granted — verify on filing receipt
6.Improper foreign filing can bar US patent and trigger criminal penalties
7.Retroactive FFL available under 37 CFR 5.25 for good-faith errors
8.Status information may be available even when full access is denied

EXAM TIP

FFL requirement depends on where the invention was MADE — not citizenship. The automatic FFL petition is NOT automatically granted — always check the filing receipt to confirm. These are the two most common traps in Chapter 100.


Common Traps

1.Assuming published application means entire paper file is inspectable — USPTO may only provide copies
2.Confusing FFL requirement with citizenship — depends on WHERE invention was made
3.Missing that only the incorporated portion becomes accessible in partial incorporation by reference
4.Thinking FFL automatically granted on filing — must verify on filing receipt
5.Missing that improper foreign filing can invalidate an already-issued patent
6.Forgetting status information does not equal full access to application contents
7.Missing that benefit claim under 120/121 opens access to earlier unpublished application

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