MPEP 211: Claiming the Benefit of an Earlier Filing Date

Answer in brief

MPEP 211 covers how an application claims the benefit of an earlier U.S. filing date: a provisional under 35 U.S.C. 119(e), or a nonprovisional or international application under 35 U.S.C. 120. The applications must share at least one inventor, the earlier one must be copending, and the later one must include a specific reference to it.

What MPEP 211 covers

Benefit claims decide the effective filing date, which decides what counts as prior art.

Benefit of a provisional (211.01(a)): the nonprovisional must be filed within 12 months of the provisional.
Benefit of a nonprovisional (211.01(b)): copendency is required, as for continuations, divisionals and CIPs.
The specific reference must appear in an application data sheet (211.02).
The claimed subject matter must be supported by the earlier application to get its date (211.05).

How examiners use it

Examiners check the benefit claim when deciding which references qualify as prior art.

On the patent bar

Know the 12-month provisional window, copendency, and that the reference goes in the application data sheet.

Read the full text

Official title: Claiming the Benefit of an Earlier Filing Date Under 35 U.S.C. 120 and 119(e) [R-07.2015].

Read MPEP 211 in full on Wysebridge ↗

Or at the source: USPTO MPEP § 211.

Sources for this entry

USPTO — MPEP § 211 USPTO
Official text of this section, Ninth Edition, Revision 01.2024.
Wysebridge MPEP Center Wysebridge (publisher of this site)
The full MPEP (9th Ed., Rev. 01.2024) free to read, with Wysebridge's estimated patent bar weight for each chapter.

Practical guidance is original editorial content. Company-published figures are the company's own claims and are labeled as such.

Continue this reading path

MPEP 609: Information Disclosure Statements (IDS)MPEP 804: Double Patenting

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Cite or share this entry

MPEP.net. “MPEP 211: Claiming the Benefit of an Earlier Filing Date.” Wysebridge Reference. Content reviewed 9 November 2026.
https://mpep.net/mpep-211/