# MPEP § 901.01: Canceled Matter in U.S. Patent Files

> Federal · Agency guidance · In force

URL: https://www.frixlaw.com/law-library/statutes/MPEP_S901.01

## Section

- **Citation:** MPEP § 901.01
- **Heading:** Canceled Matter in U.S. Patent Files
- **Jurisdiction:** Federal
- **Kind:** Agency guidance
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** USPTO MPEP / Chapter 0900 - Prior Art, Search, Classification, and Routing / MPEP § 901.01

## Text

Canceled matter in the application file of a U.S. patent or U.S.
application publication is not a proper reference as of the filing date under
35 U.S.C.
102(a)(2)
or
pre-AIA 35 U.S.C. 102(e)
. See
Ex parte Stalego,
154 USPQ 52, 53 (Bd. App. 1966). However, matter
canceled from the application file wrapper of a U.S. patent or U.S. application
publication may be used as prior art as of the patent or publication date, respectively,
in that it then constitutes prior public knowledge or prior public availability under
35 U.S.C.
102(a)(1)
or
pre-AIA 35 U.S.C. 102(a)
. See, e.g.,
In re Lund,
376 F.2d 982, 153 USPQ 625 (CCPA 1967). See also
MPEP §
2127
and
§ 2136.02
.

## Nearby sections

- [MPEP § 901 Prior Art](https://www.frixlaw.com/law-library/statutes/MPEP_S901.md)
- [MPEP § 901.01 Canceled Matter in U.S. Patent Files](https://www.frixlaw.com/law-library/statutes/MPEP_S901.01.md)
- [MPEP § 901.01(a) Ordering of Patented and Abandoned Provisional and Nonprovisional Application Files](https://www.frixlaw.com/law-library/statutes/MPEP_S901.01(a).md)
- [MPEP § 901.02 Abandoned Applications](https://www.frixlaw.com/law-library/statutes/MPEP_S901.02.md)
- [MPEP § 901.03 Pending Applications](https://www.frixlaw.com/law-library/statutes/MPEP_S901.03.md)
- [MPEP § 901.04 U.S. Patents](https://www.frixlaw.com/law-library/statutes/MPEP_S901.04.md)
- [MPEP § 901.04(a) Kind Codes](https://www.frixlaw.com/law-library/statutes/MPEP_S901.04(a).md)
- [MPEP § 901.05 Foreign Patent Documents](https://www.frixlaw.com/law-library/statutes/MPEP_S901.05.md)
- [MPEP § 901.05(a) Citation Data](https://www.frixlaw.com/law-library/statutes/MPEP_S901.05(a).md)
- [MPEP § 901.05(b) Other Significant Data](https://www.frixlaw.com/law-library/statutes/MPEP_S901.05(b).md)
- [MPEP § 901.05(c) Obtaining Copies](https://www.frixlaw.com/law-library/statutes/MPEP_S901.05(c).md)
- [MPEP § 901.05(d) Translation](https://www.frixlaw.com/law-library/statutes/MPEP_S901.05(d).md)
- [MPEP § 901.06 Nonpatent Publications](https://www.frixlaw.com/law-library/statutes/MPEP_S901.06.md)
- [MPEP § 901.06(a) Scientific and Technical Information Center (STIC)](https://www.frixlaw.com/law-library/statutes/MPEP_S901.06(a).md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/MPEP_S901.01. Check the current official text before relying on it. Not legal advice.