MPEP § 2120.02 — Rejections Under 35 U.S.C. 102(a)(1) or Pre-AIA 35 U.S.C. 102(a) or (b): Knowledge by Others, or Public Use, or On Sale (Annotated Rules)

§2120.02 Rejections Under 35 U.S.C. 102(a)(1) or Pre-AIA 35 U.S.C. 102(a) or (b): Knowledge by Others, or Public Use, or On Sale

USPTO MPEP version: BlueIron's Update: 2026-01-10

This page consolidates and annotates all enforceable requirements under MPEP § 2120.02, 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.

Rejections Under 35 U.S.C. 102(a)(1) or Pre-AIA 35 U.S.C. 102(a) or (b): Knowledge by Others, or Public Use, or On Sale

This section addresses Rejections Under 35 U.S.C. 102(a)(1) or Pre-AIA 35 U.S.C. 102(a) or (b): Knowledge by Others, or Public Use, or On Sale. Primary authority: 35 U.S.C. 102(a)(1), 35 U.S.C. 102(a), and 35 U.S.C. 132. Contains: 4 requirements, 3 guidance statements, 1 permission, and 2 other statements.

Key Rules

Topic

On Sale Under AIA (MPEP 2152.02(d))

3 rules
StatutoryRequiredAlways
[mpep-2120-02-02216220d8a79d6dd971fb4c]
Requirement for Examiner to Seek Additional Information on Public Use or On Sale Issues
Note:
An applicant may be required to answer specific questions posed by the examiner and provide additional evidence to resolve public use or on sale issues.

Note that as an aid to resolving public use or on sale issues, as well as to other related matters of public availability or public knowledge, an applicant may be required to answer specific questions posed by the examiner and to explain or supplement any evidence of record. See 35 U.S.C. 132 and 37 CFR 1.104(a)(2). Information sought should be restricted to that which is reasonably necessary for the examiner to render a decision on patentability. The examiner may consider making a requirement for information under 37 CFR 1.105 where the evidence of record indicates reasonable necessity. See MPEP § 704.10 et seq.

Jump to MPEP Source · 37 CFR 1.104(a)(2)On Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)
StatutoryInformativeAlways
[mpep-2120-02-c522c81b7533e64ca92d479f]
Requirement for Using Form Paragraph 7.16.fti to Reject On Sale Under Pre-AIA 35 U.S.C. 102(b)
Note:
If sufficient evidence exists to establish a prima facie case of public use or on sale, the examiner must use form paragraph 7.16.fti to reject under pre-AIA 35 U.S.C. 102(b).

4. If sufficient evidence already exists to establish a prima facie case of public use or on sale, use form paragraph 7.16.fti to make a rejection under pre-AIA 35 U.S.C. 102(b). See MPEP § 2133.03.

35 U.S.C.On Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)
MPEP GuidanceRecommendedAlways
[mpep-2120-02-02430a021d2008d8021f46fa]
Requirement for Additional Information on Public Use or On Sale
Note:
The examiner must require additional information if there is insufficient evidence to reject an application based on public use or on sale.

If there is not enough information on which to base a public use or on sale rejection, the examiner should make a requirement for more information. Form paragraph 7.104.aia or 7.104.fti can be used.

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)
Topic

AIA vs Pre-AIA Practice

3 rules
StatutoryRequiredAlways
[mpep-2120-02-7ec027a92ec4d53eb7fdee5c]
Form Paragraph 7.03.aia Must Precede This Rule
Note:
This rule requires that form paragraph 7.03.aia be used before this specific form paragraph in applications filed on or after March 16, 2013.

2. This form paragraph should only be used in an application filed on or after March 16, 2013, where the claims are being examined under 35 U.S.C. 102 / 103 as amended by the Leahy-Smith America Invents Act. This form paragraph must be preceded by form paragraph 7.03.aia.

35 U.S.C.AIA vs Pre-AIA PracticeAIA Effective DatesAIA Overview and Effective Dates
StatutoryInformativeAlways
[mpep-2120-02-41bfeea1abe6f5a2474eeb8a]
Requirement for Prima Facie Public Use Evidence
Note:
If sufficient evidence exists to establish a prima facie case of public use, reject under 35 U.S.C. 102(a)(1).

5. If sufficient evidence already exists to establish a prima facie case of public use, sale, or other public availability use form paragraph 7.16.aia to make a rejection under 35 U.S.C. 102(a)(1). See MPEP § 2133.03.

35 U.S.C.AIA vs Pre-AIA PracticeNovelty / Prior Art
MPEP GuidancePermittedAlways
[mpep-2120-02-b8418f245fb9b3d8bfa17e0b]
Requirement for Additional Information When Insufficient Public Use or On Sale Evidence
Note:
The examiner must request additional information if there is insufficient evidence of public use or on sale to support a rejection under AIA or Pre-AIA practice.

If there is not enough information on which to base a public use or on sale rejection, the examiner should make a requirement for more information. Form paragraph 7.104.aia or 7.104.fti can be used.

Jump to MPEP SourceAIA vs Pre-AIA PracticeNo 'By Others' Requirement (MPEP 2152.02(f))Pre-AIA 102(a) – Known or Used (MPEP 2132)
Topic

Reply Period and Extensions

2 rules
StatutoryRecommendedAlways
[mpep-2120-02-2b9886a32c74478e63bdac45]
2-Month Reply Period for Requirement
Note:
Examiners must set a 2-month period for responding to requirements, unless the requirement is part of an Office action with a shortened statutory period.

A 2-month time period should be set by the examiner for any reply to the requirement, unless the requirement is part of an Office action having a shortened statutory period, in which case the period for reply to the Office action will also apply to the requirement. If applicant fails to reply in a timely fashion to a requirement for information, the application will be regarded as abandoned. 35 U.S.C. 133.

Jump to MPEP SourceReply Period and ExtensionsResponse to Office Action Requirements (37 CFR 1.111)Shortened Statutory Period
MPEP GuidanceRecommendedAlways
[mpep-2120-02-9fcdfae340adec1df0e421bc]
Two Month Reply Period for Requirement Unless SSP Applies
Note:
Examiners must set a two-month reply period for requirements unless the Office action includes a shortened statutory period (SSP), in which case the SSP period applies.

4. A two month time period should be set by the examiner for reply to the requirement unless it is part of an Office action having a shortened statutory period (SSP), in which case the period for reply will apply also to the requirement.

MPEP § 2120.02Reply Period and ExtensionsResponse to Office Action Requirements (37 CFR 1.111)Shortened Statutory Period
Topic

No 'By Others' Requirement (MPEP 2152.02(f))

1 rules
StatutoryPermittedAlways
[mpep-2120-02-26cc45fdfbeb3e5edf910fc2]
Requirement for Public Use or Sale Evidence
Note:
An applicant must provide evidence of public use or sale of the invention, and the examiner may consider personal knowledge of such activities by others.

An applicant may make an admission, or submit evidence of sale of the invention or knowledge of the invention by others, or the examiner may have personal knowledge that the invention was sold by applicant or known by others. See MPEP §§ 2152.02(c) – 2152.02(e) for a discussion of when public use of a claimed invention, placing a claimed invention on sale, or otherwise making a claimed invention available to the public might preclude patentability under 35 U.S.C. 102(a)(1). See MPEP §§ 2132 and 2133.03 et seq. for a discussion of when public knowledge, public use, or sale of a claimed invention might preclude patentability under pre-AIA 35 U.S.C. 102(a) or (b). If the activity is by an entity other than the inventor or assignee, such as sale by another, manufacture by another or disclosure of the invention by applicant or the inventor to another then both pre-AIA 35 U.S.C. 102(a) and (b) may be applicable. If the evidence only points to knowledge within the year prior to the effective filing date then pre-AIA 35 U.S.C. 102(a) applies. However, no rejection under pre-AIA 35 U.S.C. 102(a) should be made if there is evidence that the inventor made the invention and only disclosed it to others within the year prior to the effective filing date.

Jump to MPEP SourceNo 'By Others' Requirement (MPEP 2152.02(f))On Sale Under AIA (MPEP 2152.02(d))Otherwise Available to Public (MPEP 2152.02(e))
Topic

AIA Definition of Applicant (37 CFR 1.42)

1 rules
StatutoryPermittedAlways
[mpep-2120-02-296becc4eaf710a6c9c58fe9]
Requirement for Activity by Non-Inventor
Note:
If an entity other than the inventor or assignee discloses, sells, or manufactures the invention, both pre-AIA 35 U.S.C. 102(a) and (b) may apply.

An applicant may make an admission, or submit evidence of sale of the invention or knowledge of the invention by others, or the examiner may have personal knowledge that the invention was sold by applicant or known by others. See MPEP §§ 2152.02(c) – 2152.02(e) for a discussion of when public use of a claimed invention, placing a claimed invention on sale, or otherwise making a claimed invention available to the public might preclude patentability under 35 U.S.C. 102(a)(1). See MPEP §§ 2132 and 2133.03 et seq. for a discussion of when public knowledge, public use, or sale of a claimed invention might preclude patentability under pre-AIA 35 U.S.C. 102(a) or (b). If the activity is by an entity other than the inventor or assignee, such as sale by another, manufacture by another or disclosure of the invention by applicant or the inventor to another then both pre-AIA 35 U.S.C. 102(a) and (b) may be applicable. If the evidence only points to knowledge within the year prior to the effective filing date then pre-AIA 35 U.S.C. 102(a) applies. However, no rejection under pre-AIA 35 U.S.C. 102(a) should be made if there is evidence that the inventor made the invention and only disclosed it to others within the year prior to the effective filing date.

Jump to MPEP SourceAIA Definition of Applicant (37 CFR 1.42)Assignee as Applicant SignatureApplicant and Assignee Filing Under AIA
Topic

Determining Whether Application Is AIA or Pre-AIA

1 rules
StatutoryRecommendedAlways
[mpep-2120-02-934aefcefc5b33efd5d63bb5]
Invention Knowledge Before Filing Date
Note:
If evidence shows knowledge of the invention within one year before filing, pre-AIA 35 U.S.C. 102(a) applies unless the inventor disclosed it only to others during that period.

An applicant may make an admission, or submit evidence of sale of the invention or knowledge of the invention by others, or the examiner may have personal knowledge that the invention was sold by applicant or known by others. See MPEP §§ 2152.02(c) – 2152.02(e) for a discussion of when public use of a claimed invention, placing a claimed invention on sale, or otherwise making a claimed invention available to the public might preclude patentability under 35 U.S.C. 102(a)(1). See MPEP §§ 2132 and 2133.03 et seq. for a discussion of when public knowledge, public use, or sale of a claimed invention might preclude patentability under pre-AIA 35 U.S.C. 102(a) or (b). If the activity is by an entity other than the inventor or assignee, such as sale by another, manufacture by another or disclosure of the invention by applicant or the inventor to another then both pre-AIA 35 U.S.C. 102(a) and (b) may be applicable. If the evidence only points to knowledge within the year prior to the effective filing date then pre-AIA 35 U.S.C. 102(a) applies. However, no rejection under pre-AIA 35 U.S.C. 102(a) should be made if there is evidence that the inventor made the invention and only disclosed it to others within the year prior to the effective filing date.

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIADetermining AIA vs Pre-AIA Applicability (MPEP 2159)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Topic

Patentability Determination

1 rules
StatutoryRecommendedAlways
[mpep-2120-02-6ce8cfc9818f7d86f723a00c]
Requirement for Reasonably Necessary Information for Patentability
Note:
Applicants must provide information that is reasonably necessary for the examiner to determine patentability.

Note that as an aid to resolving public use or on sale issues, as well as to other related matters of public availability or public knowledge, an applicant may be required to answer specific questions posed by the examiner and to explain or supplement any evidence of record. See 35 U.S.C. 132 and 37 CFR 1.104(a)(2). Information sought should be restricted to that which is reasonably necessary for the examiner to render a decision on patentability. The examiner may consider making a requirement for information under 37 CFR 1.105 where the evidence of record indicates reasonable necessity. See MPEP § 704.10 et seq.

Jump to MPEP Source · 37 CFR 1.104(a)(2)Patentability DeterminationReasonably Necessary StandardBasis for Requirement (MPEP 704.10)
Topic

Requirement for Information (37 CFR 1.105)

1 rules
StatutoryPermittedAlways
[mpep-2120-02-63813ff5720ffb2b4e0f10ac]
Examiner May Require Additional Evidence When Necessary
Note:
The examiner may request additional information to resolve public use, on sale, or other related issues of public availability or knowledge when the evidence in the record indicates a reasonable necessity.

Note that as an aid to resolving public use or on sale issues, as well as to other related matters of public availability or public knowledge, an applicant may be required to answer specific questions posed by the examiner and to explain or supplement any evidence of record. See 35 U.S.C. 132 and 37 CFR 1.104(a)(2). Information sought should be restricted to that which is reasonably necessary for the examiner to render a decision on patentability. The examiner may consider making a requirement for information under 37 CFR 1.105 where the evidence of record indicates reasonable necessity. See MPEP § 704.10 et seq.

Jump to MPEP Source · 37 CFR 1.104(a)(2)Requirement for Information (37 CFR 1.105)Search and Requirements for InformationNo 'By Others' Requirement (MPEP 2152.02(f))
Topic

Response to Office Action Requirements (37 CFR 1.111)

1 rules
StatutoryInformativeAlways
[mpep-2120-02-c5dbefb0380bcf882d2f956e]
Requirement for Timely Response to Informational Requirement
Note:
If an applicant fails to respond within the specified time period, the application will be considered abandoned.

A 2-month time period should be set by the examiner for any reply to the requirement, unless the requirement is part of an Office action having a shortened statutory period, in which case the period for reply to the Office action will also apply to the requirement. If applicant fails to reply in a timely fashion to a requirement for information, the application will be regarded as abandoned. 35 U.S.C. 133.

Jump to MPEP SourceResponse to Office Action Requirements (37 CFR 1.111)Assignee as Applicant SignatureApplicant and Assignee Filing Under AIA
Topic

Six Month Statutory Period

1 rules
StatutoryInformativeAlways
[mpep-2120-02-4bdacfcff5d9d660595408e1]
Requirement for Timely Reply to Informational Requirement
Note:
Applicant must respond within a 2-month period or the application will be considered abandoned unless part of an Office action with a shortened statutory period.

A 2-month time period should be set by the examiner for any reply to the requirement, unless the requirement is part of an Office action having a shortened statutory period, in which case the period for reply to the Office action will also apply to the requirement. If applicant fails to reply in a timely fashion to a requirement for information, the application will be regarded as abandoned. 35 U.S.C. 133.

Jump to MPEP SourceSix Month Statutory PeriodNo 'By Others' Requirement (MPEP 2152.02(f))On Sale Under AIA (MPEP 2152.02(d))
Topic

AIA Effective Dates

1 rules
StatutoryRecommendedAlways
[mpep-2120-02-ebb1fc0b7c0aeefd96ffbf80]
Claims Examined Under 35 U.S.C. 102/103 After March 16, 2013
Note:
This form paragraph must be used for claims examined under the amended 35 U.S.C. 102 and 103 after filing on or after March 16, 2013.

2. This form paragraph should only be used in an application filed on or after March 16, 2013, where the claims are being examined under 35 U.S.C. 102 / 103 as amended by the Leahy-Smith America Invents Act. This form paragraph must be preceded by form paragraph 7.03.aia.

35 U.S.C.AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
Topic

Types of Office Actions

1 rules
MPEP GuidanceRecommendedAlways
[mpep-2120-02-7b03bc789e7548140b31ccc2]
Requirement Reply Time Unless SSP Applies
Note:
Examiner sets a two-month reply period for requirements unless the action includes an SSP, in which case the SSP applies.

3. A two month time period should be set by the examiner for reply to the requirement unless it is part of an Office action having an SSP, in which case the SSP will apply also to the requirement.

MPEP § 2120.02Types of Office ActionsResponse to Office Action Requirements (37 CFR 1.111)Examiner's Action (37 CFR 1.104)

Citations

Primary topicCitation
AIA Effective Dates
AIA vs Pre-AIA Practice
35 U.S.C. § 102
AIA Definition of Applicant (37 CFR 1.42)
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
35 U.S.C. § 102(a)
AIA Definition of Applicant (37 CFR 1.42)
AIA vs Pre-AIA Practice
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
35 U.S.C. § 102(a)(1)
On Sale Under AIA (MPEP 2152.02(d))35 U.S.C. § 102(b)
On Sale Under AIA (MPEP 2152.02(d))
Patentability Determination
Requirement for Information (37 CFR 1.105)
35 U.S.C. § 132
Reply Period and Extensions
Response to Office Action Requirements (37 CFR 1.111)
Six Month Statutory Period
35 U.S.C. § 133
On Sale Under AIA (MPEP 2152.02(d))
Patentability Determination
Requirement for Information (37 CFR 1.105)
37 CFR § 1.104(a)(2)
On Sale Under AIA (MPEP 2152.02(d))
Patentability Determination
Requirement for Information (37 CFR 1.105)
37 CFR § 1.105
AIA Definition of Applicant (37 CFR 1.42)
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
MPEP § 2132
AIA vs Pre-AIA Practice
On Sale Under AIA (MPEP 2152.02(d))
MPEP § 2133.03
AIA Definition of Applicant (37 CFR 1.42)
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
MPEP § 2152.02(c)
On Sale Under AIA (MPEP 2152.02(d))
Patentability Determination
Requirement for Information (37 CFR 1.105)
MPEP § 704.10
AIA Effective Dates
AIA vs Pre-AIA Practice
Form Paragraph § 7.03
AIA vs Pre-AIA Practice
On Sale Under AIA (MPEP 2152.02(d))
Form Paragraph § 7.104
Form Paragraph § 7.105
AIA vs Pre-AIA Practice
On Sale Under AIA (MPEP 2152.02(d))
Form Paragraph § 7.16

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: 2026-01-10