Us Code § 4 - Restrictions on officers and employees as to interest in patents

Full text of Us Code United States Code § 4 — Restrictions on officers and employees as to interest in patents, with citation guidance and answers to common questions.

§ 4. Restrictions on officers and employees as to interest in patents

Officers and employees of the Patent and Trademark Office shall be incapable, during the period of their appointments and for one year thereafter, of applying for a patent and of acquiring, directly or indirectly, except by inheritance or bequest, any patent or any right or interest in any patent, issued or to be issued by the Office. In patents applied for thereafter they shall not be entitled to any priority date earlier than one year after the termination of their appointment.

(July 19, 1952, ch. 950, 66 Stat. 793; Pub. L. 93–596, §1, Jan. 2, 1975, 88 Stat. 1949.)

Historical and Revision Notes

Based on Title 35, U.S.C., 1946 ed., §4 (R.S. 480).

The language is revised and inability to apply for a patent, included in the original language, is made explicit.

The period of disability is increased to include one year after leaving the Office.

The further restriction, that no priority date earlier than one year after leaving the Office can be claimed, is added.

The one year period is made inapplicable to applications which may be pending when the revised title goes into effect by section 4(g) of the bill.


Editorial Notes

Amendments

1975—Pub. L. 93–596 substituted "Patent and Trademark Office" for "Patent Office".


Statutory Notes and Related Subsidiaries

Effective Date of 1975 Amendment

Amendment by Pub. L. 93–596 effective Jan. 2, 1975, see section 4 of Pub. L. 93–596, set out as a note under section 1111 of Title 15, Commerce and Trade.

About This Section

35 U.S.C. § 4 is part of Title 35 of the United States Code. The United States Code is the official codification of federal statutes maintained by the Office of the Law Revision Counsel of the U.S. House of Representatives. Congress amends the Code through new public laws, which are eventually incorporated into the relevant title.

This section may be cited in legal writing as 35 U.S.C. § 4. For the most current official text, including any recent amendments, use the official source links below. Do not rely on this page as the sole authority for legal citation or litigation.

How to Read This Statute

Statutes are organized by title, chapter, section, and subsection. Pay attention to words like "shall," "may," "and," and "or," because they determine whether a requirement is mandatory or permissive and whether multiple conditions must all be met. Historical notes and amendments often appear at the end of a section.

Using This Page

This page is intended for research and educational use. Lawyers, students, journalists, and compliance professionals can use it as a starting point, but should always verify the current text through an official government source before relying on it for legal advice, filings, or compliance decisions.

Sources

Source: official Us Code text · Last verified 2026-08-27

Frequently Asked Questions About Us Code § 4

What does United States Code § 4 cover?

Section 4 ("Restrictions on officers and employees as to interest in patents") is part of the United States Code, the codified statutory law of Us Code. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.

How do I cite Us Code § 4?

A common citation format is "United States Code § 4" (Us Code). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.

Is this the official text of Us Code law?

No. This page is for research and education and may not include the most recent amendments. For official current law, check the Us Code official source linked on this page or consult a licensed Us Code attorney.

How does Us Code § 4 apply to my situation?

Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Us Code can advise on how this section applies to you. Contact your state or local bar association for a referral.

Sources & Verification

Not legal advice. Verify against the official source and consult a licensed attorney in Us Code.