MPEP § 704.11 — What Information May Be Required (Annotated Rules)

§704.11 What Information May Be Required

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

This page consolidates and annotates all enforceable requirements under MPEP § 704.11, 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.

What Information May Be Required

This section addresses What Information May Be Required. Primary authority: 35 U.S.C. 111, 35 U.S.C. 371, and 37 CFR 1.105. Contains: 4 requirements, 2 prohibitions, 1 guidance statement, 1 permission, and 3 other statements.

Key Rules

Topic

Reasonably Necessary Standard

3 rules
StatutoryRequiredAlways
[mpep-704-11-adc7bacd9285579b04ae0de6]
Reasonably Necessary Information Required for Examination
Note:
This rule requires that information necessary to properly examine or treat a matter in certain types of applications, patents, and reexamination proceedings be provided.

Information which may be required under 37 CFR 1.105 is that information reasonably necessary to properly examine or treat a matter in a pending or abandoned application filed under 35 U.S.C. 111 (including a reissue application), in a pending or abandoned application that has entered the national stage under 35 U.S.C. 371, in a patent, or in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.105Reasonably Necessary StandardAmendments in National StageReissue and Reexamination
StatutoryInformativeAlways
[mpep-704-11-b6b721b62939b419ce13bd0a]
Information Required for Examination Must Be Reasonably Necessary
Note:
Examiners must require information that is reasonably necessary to resolve issues arising from the search for prior art or analysis of the application file.

The criteria stated in 37 CFR 1.105 for making a requirement for information is that the information be reasonably necessary to the examination or treatment of a matter in an application. The information required would typically be that necessary for finding prior art or for resolving an issue arising from the results of the search for art or from analysis of the application file. A requirement for information necessary for finding prior art is not a substitute for the examiner performing a search of the relevant prior art; the examiner must make a search of the art according to MPEP §§ 704.01 and 904 – 904.03.

Jump to MPEP Source · 37 CFR 1.105Reasonably Necessary StandardBasis for Requirement (MPEP 704.10)Requirement for Information (37 CFR 1.105)
StatutoryRequiredAlways
[mpep-704-11-05fa49d06022264e5b0e3730]
Requirement for Reasonably Necessary Information
Note:
The rule requires that information be provided if it is reasonably necessary for finding prior art or resolving issues from the search results or application analysis.

The criteria stated in 37 CFR 1.105 for making a requirement for information is that the information be reasonably necessary to the examination or treatment of a matter in an application. The information required would typically be that necessary for finding prior art or for resolving an issue arising from the results of the search for art or from analysis of the application file. A requirement for information necessary for finding prior art is not a substitute for the examiner performing a search of the relevant prior art; the examiner must make a search of the art according to MPEP §§ 704.01 and 904 – 904.03.

Jump to MPEP Source · 37 CFR 1.105Reasonably Necessary StandardBasis for Requirement (MPEP 704.10)Requirement for Information (37 CFR 1.105)
Topic

Requirement for Information (37 CFR 1.105)

3 rules
StatutoryInformativeAlways
[mpep-704-11-8471b595d9a4ae5ceeee1431]
Applicant Need Not Experimentally Derive Facts
Note:
Applicants are not required to independently discover facts through experimentation when responding to a requirement for information.

The terms “factual” and “facts” are included in 37 CFR 1.105 to make it clear that it is facts and factual information, that are known to applicant, or readily obtained after reasonable inquiry by applicant, that are sought, and that requirements under 37 CFR 1.105 are not requesting opinions that may be held or would be required to be formulated by applicant. Where the factual information requested related to the subject application, and details thereof, applicant would be expected to make a reasonable inquiry under the circumstances to find the factual information requested (37 CFR 11.18(b)(2)). Applicant need not, however, derive or independently discover a fact, such as by experimentation, in response to a requirement for information. The purpose of 37 CFR 1.105 is to improve patent quality, and render better decisions, and not to put applicants in jeopardy of meeting their duties of candor and good faith in their replies to a requirement for information.

Jump to MPEP Source · 37 CFR 1.105Requirement for Information (37 CFR 1.105)Search and Requirements for InformationTypes of Information (MPEP 704.11)
StatutoryInformativeAlways
[mpep-704-11-2275f514b4244a73801a74e2]
Information Requirement Not Jeopardizing Candor and Good Faith
Note:
The rule ensures that requests for information do not put applicants at risk of violating their duty to be candid and act in good faith.

The terms “factual” and “facts” are included in 37 CFR 1.105 to make it clear that it is facts and factual information, that are known to applicant, or readily obtained after reasonable inquiry by applicant, that are sought, and that requirements under 37 CFR 1.105 are not requesting opinions that may be held or would be required to be formulated by applicant. Where the factual information requested related to the subject application, and details thereof, applicant would be expected to make a reasonable inquiry under the circumstances to find the factual information requested (37 CFR 11.18(b)(2)). Applicant need not, however, derive or independently discover a fact, such as by experimentation, in response to a requirement for information. The purpose of 37 CFR 1.105 is to improve patent quality, and render better decisions, and not to put applicants in jeopardy of meeting their duties of candor and good faith in their replies to a requirement for information.

Jump to MPEP Source · 37 CFR 1.105Requirement for Information (37 CFR 1.105)Search and Requirements for InformationTypes of Information (MPEP 704.11)
StatutoryRequiredAlways
[mpep-704-11-18fce02ee1731aba4c8cb838]
Examiner Must Search Art, Not Just Require Info
Note:
An examiner must conduct a search of relevant prior art according to MPEP guidelines, not just require information for finding prior art as stated in 37 CFR 1.105.

The criteria stated in 37 CFR 1.105 for making a requirement for information is that the information be reasonably necessary to the examination or treatment of a matter in an application. The information required would typically be that necessary for finding prior art or for resolving an issue arising from the results of the search for art or from analysis of the application file. A requirement for information necessary for finding prior art is not a substitute for the examiner performing a search of the relevant prior art; the examiner must make a search of the art according to MPEP §§ 704.01 and 904 – 904.03.

Jump to MPEP Source · 37 CFR 1.105Requirement for Information (37 CFR 1.105)Search and Requirements for InformationReasonably Necessary Standard
Topic

Access to Patent Application Files (MPEP 101-106)

3 rules
StatutoryProhibitedAlways
[mpep-704-11-85951b4d29083ca1c77d5964]
Requirement for Asking Applicant About Relevant Information
Note:
The examiner must ask the applicant if they have relevant information when a search cannot find adequate prior art or the application file does not provide sufficient evidence.
The criteria of reasonable necessity is generally met, e.g., where:
  • (A) the examiner’s search and preliminary analysis demonstrates that the claimed subject matter cannot be adequately searched by class or keyword among patents and typical sources of non-patent literature, or
  • (B) either the application file or the lack of relevant prior art found in the examiner’s search justifies asking the applicant if he or she has information that would be relevant to the patentability determination.
Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
StatutoryProhibitedAlways
[mpep-704-11-f1a0730f736309e16622093b]
Requirement for Asking Applicant About Relevant Information
Note:
The examiner must ask the applicant if they have any relevant information that could affect patentability when either the application file contains such information or no relevant prior art is found during the search.

The criteria of reasonable necessity is generally met, e.g., where:

(B) either the application file or the lack of relevant prior art found in the examiner’s search justifies asking the applicant if he or she has information that would be relevant to the patentability determination.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
StatutoryPermittedAlways
[mpep-704-11-f988f64501787d30408c926f]
Requirement for Additional Information from Applicant's Files
Note:
The rule requires that additional information be provided if the application file suggests the applicant has relevant, unpublished information necessary to understand the invention.

The second instance generally occurs where the application file, or other related applications or publications authored by the applicant, suggests the applicant likely has access to information necessary to a more complete understanding of the invention and its context. In this situation, the record suggests that the details of such information may be relevant to the issue of patentability, and thus shows the need for information in addition to that already submitted by the applicant.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
Topic

Statutory Authority for Examination

2 rules
StatutoryRequiredAlways
[mpep-704-11-0389940b83cc2c0b7e929ff6]
Requirement for Reasonable Basis in Examination
Note:
Examiners must have a reasonable basis for requiring information that aids in the examination of an application or treatment.

There must be a reasonable basis for the information required that would aid in the examination of an application or treatment of some matter. A requirement for information under 37 CFR 1.105 places a substantial burden on the applicant that is to be minimized by clearly focusing the reason for the requirement and the scope of the expected response. Thus, the scope of the requirement should be narrowly defined, and a requirement under 37 CFR 1.105 may only be made when the examiner has a reasonable basis for requiring information.

Jump to MPEP Source · 37 CFR 1.105Statutory Authority for ExaminationExamination ProceduresTypes of Information (MPEP 704.11)
StatutoryRecommendedAlways
[mpep-704-11-93912ca7f1cba9b82895966d]
Narrow Scope for Examiner Information Requests
Note:
Examiner must have a reasonable basis and narrowly define the scope of information required from applicants to minimize burden.

There must be a reasonable basis for the information required that would aid in the examination of an application or treatment of some matter. A requirement for information under 37 CFR 1.105 places a substantial burden on the applicant that is to be minimized by clearly focusing the reason for the requirement and the scope of the expected response. Thus, the scope of the requirement should be narrowly defined, and a requirement under 37 CFR 1.105 may only be made when the examiner has a reasonable basis for requiring information.

Jump to MPEP Source · 37 CFR 1.105Statutory Authority for ExaminationExamination ProceduresRequirement for Information (37 CFR 1.105)
Topic

Types of Information (MPEP 704.11)

2 rules
StatutoryRequiredAlways
[mpep-704-11-c6481e281d23f0117818fa72]
Requirement for Factual Information Not Opinions
Note:
The rule clarifies that applicants must provide known facts or easily obtainable factual information, not opinions, in response to information requests.

The terms “factual” and “facts” are included in 37 CFR 1.105 to make it clear that it is facts and factual information, that are known to applicant, or readily obtained after reasonable inquiry by applicant, that are sought, and that requirements under 37 CFR 1.105 are not requesting opinions that may be held or would be required to be formulated by applicant. Where the factual information requested related to the subject application, and details thereof, applicant would be expected to make a reasonable inquiry under the circumstances to find the factual information requested (37 CFR 11.18(b)(2)). Applicant need not, however, derive or independently discover a fact, such as by experimentation, in response to a requirement for information. The purpose of 37 CFR 1.105 is to improve patent quality, and render better decisions, and not to put applicants in jeopardy of meeting their duties of candor and good faith in their replies to a requirement for information.

Jump to MPEP Source · 37 CFR 1.105Types of Information (MPEP 704.11)Requirement for Information (37 CFR 1.105)Search and Requirements for Information
StatutoryInformativeAlways
[mpep-704-11-181f729b15173b146cab7a78]
Applicant Must Make Reasonable Inquiry for Factual Information
Note:
The applicant is expected to make a reasonable inquiry under the circumstances to find factual information related to the application, as required by 37 CFR 11.18(b)(2).

The terms “factual” and “facts” are included in 37 CFR 1.105 to make it clear that it is facts and factual information, that are known to applicant, or readily obtained after reasonable inquiry by applicant, that are sought, and that requirements under 37 CFR 1.105 are not requesting opinions that may be held or would be required to be formulated by applicant. Where the factual information requested related to the subject application, and details thereof, applicant would be expected to make a reasonable inquiry under the circumstances to find the factual information requested (37 CFR 11.18(b)(2)). Applicant need not, however, derive or independently discover a fact, such as by experimentation, in response to a requirement for information. The purpose of 37 CFR 1.105 is to improve patent quality, and render better decisions, and not to put applicants in jeopardy of meeting their duties of candor and good faith in their replies to a requirement for information.

Jump to MPEP Source · 37 CFR 1.105Types of Information (MPEP 704.11)Requirement for Information (37 CFR 1.105)Search and Requirements for Information

Citations

Primary topicCitation
Reasonably Necessary Standard35 U.S.C. § 111
Reasonably Necessary Standard35 U.S.C. § 371
Reasonably Necessary Standard
Requirement for Information (37 CFR 1.105)
Statutory Authority for Examination
Types of Information (MPEP 704.11)
37 CFR § 1.105
Requirement for Information (37 CFR 1.105)
Types of Information (MPEP 704.11)
37 CFR § 11.18(b)(2)
Reasonably Necessary Standard
Requirement for Information (37 CFR 1.105)
MPEP § 704.01

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31