# Revision of the Time Limit for National Stage Commencement in the United States for Patent Cooperation Treaty Applications
> **US Patent and Trademark Office** · Final rule. · Published 2002-01-04 · Effective 2002-04-01 · 67 FR 520
## Document
- **Document number:** 02-157
- **Category:** uspto-patent
- **Sub-agency:** US Patent and Trademark Office
- **Federal Register citation:** 67 FR 520
- **CFR reference:** 37 CFR 1
- **Publication date:** 2002-01-04
- **Effective date:** 2002-04-01
- **Commerce docket:** Docket No. 011108271-1271-01
## Abstract

The United States Patent and Trademark Office (Office) is revising the rules of practice relating to applications filed under the Patent Cooperation Treaty (PCT). This rule modifies the Office's rules of practice to comply with an amendment to the PCT. The changes in this rule specifically involve revising the rules of practice consistent with the change to the PCT to have a single time limit for national stage commencement for applications filed under the PCT, regardless of whether the applicant filed a Demand for an international preliminary examination.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/01/04/02-157/revision-of-the-time-limit-for-national-stage-commencement-in-the-united-states-for-patent)
---
*AI Analytics · CC0 1.0*