MPEP § 2163.07 — Amendments to Application Which Are Supported in the Original Description (Annotated Rules)

§2163.07 Amendments to Application Which Are Supported in the Original Description

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 2163.07, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Amendments to Application Which Are Supported in the Original Description

This section addresses Amendments to Application Which Are Supported in the Original Description. Primary authority: 35 U.S.C. 119, 37 CFR 1.55, and 37 CFR 1.57(a). Contains: 1 requirement, 2 prohibitions, 1 permission, and 8 other statements.

Key Rules

Topic

Components Required for Filing Date

11 rules
StatutoryProhibitedAlways
[mpep-2163-07-8efe6e15c1d819d573520b75]
Foreign Priority Document Cannot Support U.S. Error Correction
Note:
Applicants may not use a foreign priority document to correct errors in their U.S. application, even if it is recorded in the file.

Where a foreign priority document under 35 U.S.C. 119 is of record in the U.S. application file, applicant may not rely on the disclosure of that document to support correction of an error in the pending U.S. application. Ex parte Bondiou, 132 USPQ 356 (Bd. Pat. App. & Int. 1961). This prohibition applies regardless of the language of the foreign priority documents because a claim for priority is simply a claim for the benefit of an earlier filing date for subject matter that is common to two or more applications, and does not serve to incorporate the content of the priority document in the application in which the claim for priority is made. This prohibition does not apply where the U.S. application explicitly incorporates the foreign priority document by reference. For applications filed on or after September 21, 2004, where all or a portion of the specification or drawing(s) is inadvertently omitted from the U.S. application, a claim under 37 CFR 1.55 for priority of a prior-filed foreign application that is present on the filing date of the application is considered an incorporation by reference of the prior-filed foreign application as to the inadvertently omitted portion of the specification or drawing(s), subject to the conditions and requirements of 37 CFR 1.57(a). See 37 CFR 1.57(a) and MPEP § 217.

Jump to MPEP Source · 37 CFR 1.55Components Required for Filing DateFiling Date RequirementsPatent Application Content
StatutoryInformativeAlways
[mpep-2163-07-2662748a0ad2ce9b392553a5]
U.S. Application Can Incorporate Foreign Priority Document
Note:
A U.S. application can explicitly incorporate a foreign priority document, overriding the prohibition against relying on its disclosure for correcting errors in the application.

Where a foreign priority document under 35 U.S.C. 119 is of record in the U.S. application file, applicant may not rely on the disclosure of that document to support correction of an error in the pending U.S. application. Ex parte Bondiou, 132 USPQ 356 (Bd. Pat. App. & Int. 1961). This prohibition applies regardless of the language of the foreign priority documents because a claim for priority is simply a claim for the benefit of an earlier filing date for subject matter that is common to two or more applications, and does not serve to incorporate the content of the priority document in the application in which the claim for priority is made. This prohibition does not apply where the U.S. application explicitly incorporates the foreign priority document by reference. For applications filed on or after September 21, 2004, where all or a portion of the specification or drawing(s) is inadvertently omitted from the U.S. application, a claim under 37 CFR 1.55 for priority of a prior-filed foreign application that is present on the filing date of the application is considered an incorporation by reference of the prior-filed foreign application as to the inadvertently omitted portion of the specification or drawing(s), subject to the conditions and requirements of 37 CFR 1.57(a). See 37 CFR 1.57(a) and MPEP § 217.

Jump to MPEP Source · 37 CFR 1.55Components Required for Filing DateFiling Date RequirementsPatent Application Content
StatutoryInformativeAlways
[mpep-2163-07-149114167f1bf94d47b3abe5]
Priority Claim Incorporates Omitted Specification/Pages
Note:
A claim for priority under 37 CFR 1.55 considers the prior-filed foreign application as an incorporation by reference for any omitted specification or drawings in a U.S. application filed on or after September 21, 2004.

Where a foreign priority document under 35 U.S.C. 119 is of record in the U.S. application file, applicant may not rely on the disclosure of that document to support correction of an error in the pending U.S. application. Ex parte Bondiou, 132 USPQ 356 (Bd. Pat. App. & Int. 1961). This prohibition applies regardless of the language of the foreign priority documents because a claim for priority is simply a claim for the benefit of an earlier filing date for subject matter that is common to two or more applications, and does not serve to incorporate the content of the priority document in the application in which the claim for priority is made. This prohibition does not apply where the U.S. application explicitly incorporates the foreign priority document by reference. For applications filed on or after September 21, 2004, where all or a portion of the specification or drawing(s) is inadvertently omitted from the U.S. application, a claim under 37 CFR 1.55 for priority of a prior-filed foreign application that is present on the filing date of the application is considered an incorporation by reference of the prior-filed foreign application as to the inadvertently omitted portion of the specification or drawing(s), subject to the conditions and requirements of 37 CFR 1.57(a). See 37 CFR 1.57(a) and MPEP § 217.

Jump to MPEP Source · 37 CFR 1.55Components Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-017fdf74cd015de2bc4d2d7d]
Rephrasing Does Not Constitute New Matter
Note:
A reworded passage with the same meaning is not considered new matter and does not require additional support in the original description.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-216e1fe9f387cd222a1b992e]
Rephrasing of Passage Is Permissible If Same Meaning Remains
Note:
A rewording of a passage is permissible as long as the same meaning remains intact, according to In re Anderson.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceProhibitedAlways
[mpep-2163-07-00f1d4d513299beb7e4bc905]
Dictionary Definitions Not New Matter
Note:
The inclusion of dictionary definitions known at the time of filing an application does not constitute new matter.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceRequiredAlways
[mpep-2163-07-9f15292d42646aca89c0d466]
Specification Must Clarify Intended Definition
Note:
The application must clearly indicate the intended definition for terms with multiple definitions to avoid issues of new matter and lack of written description.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-65ee11df6956a7b21186ca42]
Amendments Must Be Supported by Original Description
Note:
The rule requires that any amendments to the application must be supported by the original description, specifically prohibiting rephrasing or adding new matter not present in the initial filing.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-dc3015d7760f7faca2a0f84d]
Amendments Must Be Supported by Original Description
Note:
The rule requires that any amendments to the application must be supported by the original description, specifically noting that renaming terms without changing their meaning is permissible.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-c526f52005f616c0dc0a9731]
Amendment to Specification Must Not Add New Matter
Note:
The amendment substituting 'IFN-(a)' for 'leukocyte interferon' is permissible as it merely renames the invention without adding new matter.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DatePatent Application ContentFiling Date Requirements
MPEP GuidanceInformativeAlways
[mpep-2163-07-ad32233c8b82fe976cf31fd6]
Claims Must Match Deposits
Note:
The claims must be limited to the specific interferon subtype coded by the inventor’s original deposits as filed.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
Topic

Filing Date Requirements

2 rules
StatutoryInformativeAlways
[mpep-2163-07-c67a02915db80e6e4ab72ace]
Claim for Priority Does Not Incorporate Foreign Document Content
Note:
A claim for priority does not serve to incorporate the content of a foreign priority document into the U.S. application claiming such priority.

Where a foreign priority document under 35 U.S.C. 119 is of record in the U.S. application file, applicant may not rely on the disclosure of that document to support correction of an error in the pending U.S. application. Ex parte Bondiou, 132 USPQ 356 (Bd. Pat. App. & Int. 1961). This prohibition applies regardless of the language of the foreign priority documents because a claim for priority is simply a claim for the benefit of an earlier filing date for subject matter that is common to two or more applications, and does not serve to incorporate the content of the priority document in the application in which the claim for priority is made. This prohibition does not apply where the U.S. application explicitly incorporates the foreign priority document by reference. For applications filed on or after September 21, 2004, where all or a portion of the specification or drawing(s) is inadvertently omitted from the U.S. application, a claim under 37 CFR 1.55 for priority of a prior-filed foreign application that is present on the filing date of the application is considered an incorporation by reference of the prior-filed foreign application as to the inadvertently omitted portion of the specification or drawing(s), subject to the conditions and requirements of 37 CFR 1.57(a). See 37 CFR 1.57(a) and MPEP § 217.

Jump to MPEP Source · 37 CFR 1.55Filing Date RequirementsComponents Required for Filing DatePatent Application Content
MPEP GuidanceInformativeAlways
[mpep-2163-07-fb57cf49e1941c8db6841875]
Revised Term Not New Matter
Note:
A change to a term, such as 'leukocyte interferon' to 'IFN-(a)', is permissible if it merely renames the invention and does not introduce new matter.

Mere rephrasing of a passage does not constitute new matter. Accordingly, a rewording of a passage where the same meaning remains intact is permissible. In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973). The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description. See, e.g., Schering Corp. v. Amgen, Inc., 222 F.3d 1347, 1352-53, 55 USPQ2d 1650, 1654 (Fed. Cir. 2000). In Schering, the original disclosure was drawn to recombinant DNA molecules and used the term “leukocyte interferon.” Shortly after the filing date, a scientific committee abolished the term in favor of “IFN-(a),” since the latter term more specifically identified a particular polypeptide and since the committee found that leukocytes also produced other types of interferon. The court held that the subsequent amendment to the specification and claims substituting the term “IFN-(a)” for “leukocyte interferon” merely renamed the invention and did not constitute new matter. The claims were limited to cover only the interferon subtype coded for by the inventor’s original deposits.

Jump to MPEP SourceFiling Date RequirementsComponents Required for Filing DatePatent Application Content
Topic

Translation Requirements

1 rules
StatutoryPermittedAlways
[mpep-2163-07-4bcd947d47ee3e3fdeb9edf0]
Non-English Original Can Support English Translation Corrections
Note:
If an error is found in the English translation of a non-English U.S. application, the original non-English description can be used to correct the error.

Where a U.S. application as originally filed was in a non-English language and an English translation thereof was subsequently submitted pursuant to 37 CFR 1.52(d), if there is an error in the English translation, applicant may rely on the disclosure of the originally filed non-English language U.S. application to support correction of an error in the English translation document.

Jump to MPEP Source · 37 CFR 1.52(d)Translation RequirementsForeign Language and TranslationGeneral Filing and Format Requirements
Topic

No New Matter in Reissue

1 rules
MPEP GuidanceInformativeAlways
[mpep-2163-07-93662298a3ef08ab39172cec]
Correction of Obvious Error Does Not Add New Matter
Note:
An amendment to correct an obvious error in the specification does not introduce new matter if a skilled artisan would recognize both the error and its appropriate correction.

An amendment to correct an obvious error does not constitute new matter where one skilled in the art would not only recognize the existence of error in the specification, but also the appropriate correction. In re Oda, 443 F.2d 1200, 170 USPQ 268 (CCPA 1971).

Jump to MPEP SourceNo New Matter in ReissueSpecification AmendmentsAmendments in Reissue

Citations

Primary topicCitation
Components Required for Filing Date
Filing Date Requirements
35 U.S.C. § 119
Translation Requirements37 CFR § 1.52(d)
Components Required for Filing Date
Filing Date Requirements
37 CFR § 1.55
Components Required for Filing Date
Filing Date Requirements
37 CFR § 1.57(a)
Components Required for Filing Date
Filing Date Requirements
MPEP § 217
Components Required for Filing Date
Filing Date Requirements
Ex parte Bondiou, 132 USPQ 356 (Bd. Pat. App. & Int. 1961)
Components Required for Filing Date
Filing Date Requirements
In re Anderson, 471 F.2d 1237, 176 USPQ 331 (CCPA 1973)
No New Matter in ReissueIn re Oda, 443 F.2d 1200, 170 USPQ 268 (CCPA 1971)

Source Text from USPTO’s MPEP

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BlueIron Last Updated: 2025-12-31