MPEP § 2133.03 — Rejections Based on “Public Use” or “On Sale” (Annotated Rules)

§2133.03 Rejections Based on “Public Use” or “On Sale”

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

This page consolidates and annotates all enforceable requirements under MPEP § 2133.03, 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 Based on “Public Use” or “On Sale”

This section addresses Rejections Based on “Public Use” or “On Sale”. Primary authority: 35 U.S.C. 102, 35 U.S.C. 102(a), and 35 U.S.C. 102(b). Contains: 2 prohibitions, 2 guidance statements, 3 permissions, and 10 other statements.

Key Rules

Topic

On Sale Under AIA (MPEP 2152.02(d))

9 rules
StatutoryInformativeAlways
[mpep-2133-03-6696b4dc59c5396af5f12a0a]
Requirement for On-Sale Public Use Before Invention Time
Note:
The application must not have been publicly used or sold before the time of the invention for pre-AIA 35 U.S.C. 102 purposes.

[Editor Note: This MPEP section is applicable regardless of whether an application is examined under the AIA or under pre-AIA law. For applications subject to the first inventor to file (FITF) provisions of the AIA, the relevant time is “before the effective filing date of the claimed invention". For applications subject to pre-AIA 35 U.S.C. 102, the relevant time is “at the time of the invention”. See MPEP § 2152.02(c) through (e) for a detailed discussion of the public use and on sale provisions of AIA 35 U.S.C. 102. Many of the court decisions discussed in this section involved applications or patents subject to pre-AIA 35 U.S.C. 102. These court decisions may be applicable to applications and patents subject to AIA 35 U.S.C. 102 but the relevant time is before the effective filing date of the claimed invention and not at the time of the invention.]

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)
StatutoryPermittedAlways
[mpep-2133-03-a842da75324f42fa9240daee]
Either Public Use or On Sale Can Invalidate Patentability
Note:
The rule states that either public use or on sale can independently invalidate patentability, even if one does not apply when the other does.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

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)
StatutoryInformativeAlways
[mpep-2133-03-ca87eb948ff6576c42998223]
On Sale Disclosure Bars Patentability
Note:
The rule explains that a public use or on sale disclosure of an invention more than one year before the application date can bar patentability, even if there are no sales.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))Commercial Offer for Sale
StatutoryInformativeAlways
[mpep-2133-03-b3bef96bb46d709edb127058]
On Sale Requirement Under AIA
Note:
The rule states that the 'on sale' term in AIA 35 U.S.C. 102(a)(1) has the same meaning as pre-AIA 35 U.S.C. 102(b), barring patentability if an invention is sold or offered for sale more than one year before the application.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)On Sale (MPEP 2152.02(d))
StatutoryInformativeAlways
[mpep-2133-03-4f8d32e1b4a2e13f91859e86]
On Sale Requirement for Pre-AIA 102(b)
Note:
The rule requires that a sale or offer to sell an invention more than one year before the application date constitutes a statutory bar under pre-AIA 35 U.S.C. 102(b).

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))Commercial Offer for Sale
StatutoryInformativeAlways
[mpep-2133-03-9487720ca9e2c3845e5c5fa2]
Differences Between Public Use and On Sale Activities
Note:
The rule explains that not all public use and on sale activities have the same effect on patentability, distinguishing between commercial and non-commercial actions as well as those by applicants versus others.

In similar fashion, not all “public use” and “on sale” activities will necessarily occasion the identical result. Although both activities affect how an inventor may use an invention prior to the filing of a patent application, “non-commercial” pre-AIA 35 U.S.C. 102(b) activity may not be viewed the same as similar “commercial” activity. See MPEP § 2133.03(a) and § 2133.03(e)(1). Likewise, “public use” activity by an applicant may not be considered in the same light as similar “public use” activity by one other than an applicant. See MPEP § 2133.03(a) and § 2133.03(e)(7). Additionally, the concept of “experimental use” may have different significance in “commercial” and “non-commercial” environments. See MPEP § 2133.03(c) and § 2133.03(e)§ 2133.03(e)(6).

Jump to MPEP Source · 37 CFR 2133.03(e)(1)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)
StatutoryRecommendedAlways
[mpep-2133-03-9d8847b0dce6367ed83f8daa]
Pre-AIA 102(b) On-Sale Bar May Anticipate or Make Obvious
Note:
The pre-AIA 35 U.S.C. 102(b) on-sale bar may prevent patentability if a device in public use or placed on sale anticipates the claimed invention or renders it obvious when combined with prior art.
It should be noted that pre-AIA 35 U.S.C. 102(b) may create a bar to patentability either alone, if the device in public use or placed on sale anticipates a later claimed invention, or in conjunction with 35 U.S.C. 103, if the claimed invention would have been obvious from the device in conjunction with the prior art. LaBounty Mfg. v. United States Int’l Trade Comm’n, 958 F.2d 1066, 1071, 22 USPQ2d 1025, 1028 (Fed. Cir. 1992).
  • (A) “One policy underlying the [on-sale] bar is to obtain widespread disclosure of new inventions to the public via patents as soon as possible.” RCA Corp. v. Data Gen. Corp., 887 F.2d 1056, 1062, 12 USPQ2d 1449, 1454 (Fed. Cir. 1989).
  • (B) Another policy underlying the public use and on-sale bars is to prevent the inventor from commercially exploiting the exclusivity of the invention substantially beyond the statutorily authorized period. RCA Corp. v. Data Gen. Corp., 887 F.2d 1056, 1062, 12 USPQ2d 1449, 1454 (Fed. Cir. 1989). See MPEP § 2133.03(e)(1).
  • (C) Another underlying policy for the public use and on-sale bars is to discourage “the removal of inventions from the public domain which the public justifiably comes to believe are freely available.” Manville Sales Corp. v. Paramount Sys., Inc., 917 F.2d 544, 549, 16 USPQ2d 1587, 1591 (Fed. Cir. 1990).
Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))Determining Whether Application Is AIA or Pre-AIA
StatutoryInformativeAlways
[mpep-2133-03-ee5baeac99d5a922fc98dd89]
Pre-AIA On-Sale Bar Prevents Commercial Exploitation
Note:
The pre-AIA on-sale bar prevents an inventor from commercially exploiting the exclusivity of an invention beyond the statutorily authorized period.

It should be noted that pre-AIA 35 U.S.C. 102(b) may create a bar to patentability either alone, if the device in public use or placed on sale anticipates a later claimed invention, or in conjunction with 35 U.S.C. 103, if the claimed invention would have been obvious from the device in conjunction with the prior art. LaBounty Mfg. v. United States Int’l Trade Comm’n, 958 F.2d 1066, 1071, 22 USPQ2d 1025, 1028 (Fed. Cir. 1992).

RCA Corp. v. Data Gen. Corp., 887 F.2d 1056, 1062, 12 USPQ2d 1449, 1454 (Fed. Cir. 1989). See MPEP § 2133.03(e)(1).

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))Determining Whether Application Is AIA or Pre-AIA
StatutoryInformativeAlways
[mpep-2133-03-156632df791230f96ef55350]
Requirement for Public Use or On-Sale Anticipation
Note:
The rule requires that if a device is in public use or on sale, it can anticipate later claimed inventions and create a bar to patentability under pre-AIA 35 U.S.C. 102(b).

It should be noted that pre-AIA 35 U.S.C. 102(b) may create a bar to patentability either alone, if the device in public use or placed on sale anticipates a later claimed invention, or in conjunction with 35 U.S.C. 103, if the claimed invention would have been obvious from the device in conjunction with the prior art. LaBounty Mfg. v. United States Int’l Trade Comm’n, 958 F.2d 1066, 1071, 22 USPQ2d 1025, 1028 (Fed. Cir. 1992).

Manville Sales Corp. v. Paramount Sys., Inc., 917 F.2d 544, 549, 16 USPQ2d 1587, 1591 (Fed. Cir. 1990).

Jump to MPEP SourceOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))Determining Whether Application Is AIA or Pre-AIA
Topic

Determining Whether Application Is AIA or Pre-AIA

4 rules
StatutoryInformativeAlways
[mpep-2133-03-66379c406f8a7a27892478ec]
Requirement for Effective Filing Date Before Invention
Note:
The rule requires that applications subject to the first inventor to file provisions of the AIA must demonstrate prior art before the effective filing date of the claimed invention.

[Editor Note: This MPEP section is applicable regardless of whether an application is examined under the AIA or under pre-AIA law. For applications subject to the first inventor to file (FITF) provisions of the AIA, the relevant time is “before the effective filing date of the claimed invention". For applications subject to pre-AIA 35 U.S.C. 102, the relevant time is “at the time of the invention”. See MPEP § 2152.02(c) through (e) for a detailed discussion of the public use and on sale provisions of AIA 35 U.S.C. 102. Many of the court decisions discussed in this section involved applications or patents subject to pre-AIA 35 U.S.C. 102. These court decisions may be applicable to applications and patents subject to AIA 35 U.S.C. 102 but the relevant time is before the effective filing date of the claimed invention and not at the time of the invention.]

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIADetermining AIA vs Pre-AIA Applicability (MPEP 2159)Prior Art Under 102(a)(1) (MPEP 2152.02)
StatutoryPermittedAlways
[mpep-2133-03-11961c83afb12ab9521a2dae]
Rejections Based on Public Use or On Sale Before Effective Filing Date
Note:
This rule applies rejections based on public use or on sale provisions before the effective filing date of the claimed invention, not at the time of invention.

[Editor Note: This MPEP section is applicable regardless of whether an application is examined under the AIA or under pre-AIA law. For applications subject to the first inventor to file (FITF) provisions of the AIA, the relevant time is “before the effective filing date of the claimed invention". For applications subject to pre-AIA 35 U.S.C. 102, the relevant time is “at the time of the invention”. See MPEP § 2152.02(c) through (e) for a detailed discussion of the public use and on sale provisions of AIA 35 U.S.C. 102. Many of the court decisions discussed in this section involved applications or patents subject to pre-AIA 35 U.S.C. 102. These court decisions may be applicable to applications and patents subject to AIA 35 U.S.C. 102 but the relevant time is before the effective filing date of the claimed invention and not at the time of the invention.]

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)
StatutoryRecommendedAlways
[mpep-2133-03-50b850a9958874cdad2201e0]
Invention Disclosure Before Filing Date
Note:
If evidence shows disclosure within one year before filing, pre-AIA 35 U.S.C. 102(a) applies unless the inventor disclosed only after making the invention.

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. If the activity is by an entity other than the inventors, one or more joint inventors, or the assignee, such as sale by another, manufacture by another or disclosure of the invention by the inventor, one or more joint inventors, or the assignee 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 inventor made the invention and only disclosed it to others within the year prior to the effective filing date. Pre-AIA 35 U.S.C. 102(b) is applicable if the activity occurred more than 1 year prior to the effective filing date of a claimed invention in the application.

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)
StatutoryInformativeAlways
[mpep-2133-03-8f89eb44be2747e41f5cbe92]
Requirement for Determining Pre-AIA On-Sale Activity
Note:
This rule requires determining if an activity occurred more than one year before the effective filing date to apply pre-AIA 35 U.S.C. 102(b) for on-sale rejections.

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. If the activity is by an entity other than the inventors, one or more joint inventors, or the assignee, such as sale by another, manufacture by another or disclosure of the invention by the inventor, one or more joint inventors, or the assignee 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 inventor made the invention and only disclosed it to others within the year prior to the effective filing date. Pre-AIA 35 U.S.C. 102(b) is applicable if the activity occurred more than 1 year prior to the effective filing date of a claimed invention in the application.

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

Public Use Under AIA (MPEP 2152.02(c))

4 rules
StatutoryPermittedAlways
[mpep-2133-03-4b2b279240042a569560df37]
Public Use of Invention Without Sales
Note:
The invention can be publicly used without any sales activity, which may bar patentability.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourcePublic Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)On Sale Under AIA (MPEP 2152.02(d))
StatutoryProhibitedAlways
[mpep-2133-03-76d85704433d1aadc5116e3b]
Different Treatment of Public Use by Applicant vs Others
Note:
The rule states that public use activity by an applicant is not to be considered the same as similar activity by others. It also notes that experimental use can have different significance in commercial and non-commercial environments.

In similar fashion, not all “public use” and “on sale” activities will necessarily occasion the identical result. Although both activities affect how an inventor may use an invention prior to the filing of a patent application, “non-commercial” pre-AIA 35 U.S.C. 102(b) activity may not be viewed the same as similar “commercial” activity. See MPEP § 2133.03(a) and § 2133.03(e)(1). Likewise, “public use” activity by an applicant may not be considered in the same light as similar “public use” activity by one other than an applicant. See MPEP § 2133.03(a) and § 2133.03(e)(7). Additionally, the concept of “experimental use” may have different significance in “commercial” and “non-commercial” environments. See MPEP § 2133.03(c) and § 2133.03(e)§ 2133.03(e)(6).

Jump to MPEP Source · 37 CFR 2133.03(e)(1)Public Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)Assignee as Applicant Signature
StatutoryInformativeAlways
[mpep-2133-03-579b9c46daef7cb50e17e42b]
Prevent Inventor from Exploiting Invention Beyond Statutory Period
Note:
The rule prevents an inventor from commercially exploiting the exclusivity of their invention for a period longer than the statutorily authorized time, through public use or on-sale bars.

It should be noted that pre-AIA 35 U.S.C. 102(b) may create a bar to patentability either alone, if the device in public use or placed on sale anticipates a later claimed invention, or in conjunction with 35 U.S.C. 103, if the claimed invention would have been obvious from the device in conjunction with the prior art. LaBounty Mfg. v. United States Int’l Trade Comm’n, 958 F.2d 1066, 1071, 22 USPQ2d 1025, 1028 (Fed. Cir. 1992).

(B) Another policy underlying the public use and on-sale bars is to prevent the inventor from commercially exploiting the exclusivity of the invention substantially beyond the statutorily authorized period.

Jump to MPEP SourcePublic Use Under AIA (MPEP 2152.02(c))AIA 102(a)(1) – Prior Art Categories (MPEP 2152.02)On Sale Under AIA (MPEP 2152.02(d))
StatutoryInformativeAlways
[mpep-2133-03-622ff1e432fac98893addd0c]
Prevents Removal of Inventions from Public Domain
Note:
The rule discourages inventions that the public believes are freely available from being removed from the public domain.

It should be noted that pre-AIA 35 U.S.C. 102(b) may create a bar to patentability either alone, if the device in public use or placed on sale anticipates a later claimed invention, or in conjunction with 35 U.S.C. 103, if the claimed invention would have been obvious from the device in conjunction with the prior art. LaBounty Mfg. v. United States Int’l Trade Comm’n, 958 F.2d 1066, 1071, 22 USPQ2d 1025, 1028 (Fed. Cir. 1992).

(C) Another underlying policy for the public use and on-sale bars is to discourage “the removal of inventions from the public domain which the public justifiably comes to believe are freely available.”

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

Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)

2 rules
StatutoryInformativeAlways
[mpep-2133-03-9e1684df2c9d601fbbc1cc31]
Rejections Based on Pre-AIA Public Use or On Sale Provisions
Note:
This rule outlines the application of pre-AIA 35 U.S.C. 102 public use and on sale provisions for rejections in patent applications.

[Editor Note: This MPEP section is applicable regardless of whether an application is examined under the AIA or under pre-AIA law. For applications subject to the first inventor to file (FITF) provisions of the AIA, the relevant time is “before the effective filing date of the claimed invention". For applications subject to pre-AIA 35 U.S.C. 102, the relevant time is “at the time of the invention”. See MPEP § 2152.02(c) through (e) for a detailed discussion of the public use and on sale provisions of AIA 35 U.S.C. 102. Many of the court decisions discussed in this section involved applications or patents subject to pre-AIA 35 U.S.C. 102. These court decisions may be applicable to applications and patents subject to AIA 35 U.S.C. 102 but the relevant time is before the effective filing date of the claimed invention and not at the time of the invention.]

Jump to MPEP SourcePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)AIA vs Pre-AIA PracticeNovelty / Prior Art
StatutoryProhibitedAlways
[mpep-2133-03-c008bf58553b2375d344405a]
Non-Commercial Pre-AIA Activity Not Equated to Commercial Use
Note:
The rule states that 'non-commercial' pre-AIA activity is not treated the same as similar 'commercial' activity regarding patent application filings.

In similar fashion, not all “public use” and “on sale” activities will necessarily occasion the identical result. Although both activities affect how an inventor may use an invention prior to the filing of a patent application, “non-commercial” pre-AIA 35 U.S.C. 102(b) activity may not be viewed the same as similar “commercial” activity. See MPEP § 2133.03(a) and § 2133.03(e)(1). Likewise, “public use” activity by an applicant may not be considered in the same light as similar “public use” activity by one other than an applicant. See MPEP § 2133.03(a) and § 2133.03(e)(7). Additionally, the concept of “experimental use” may have different significance in “commercial” and “non-commercial” environments. See MPEP § 2133.03(c) and § 2133.03(e)§ 2133.03(e)(6).

Jump to MPEP Source · 37 CFR 2133.03(e)(1)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)AIA vs Pre-AIA PracticeNovelty / Prior Art
Topic

AIA vs Pre-AIA Practice

1 rules
StatutoryInformativeAlways
[mpep-2133-03-411ffcdafedc6fd3624a2cff]
AIA and Pre-AIA Practice for Public Use and On Sale Rejections
Note:
This rule outlines the application of public use and on sale rejections under both AIA and pre-AIA practices, specifying relevant timeframes.

[Editor Note: This MPEP section is applicable regardless of whether an application is examined under the AIA or under pre-AIA law. For applications subject to the first inventor to file (FITF) provisions of the AIA, the relevant time is “before the effective filing date of the claimed invention". For applications subject to pre-AIA 35 U.S.C. 102, the relevant time is “at the time of the invention”. See MPEP § 2152.02(c) through (e) for a detailed discussion of the public use and on sale provisions of AIA 35 U.S.C. 102. Many of the court decisions discussed in this section involved applications or patents subject to pre-AIA 35 U.S.C. 102. These court decisions may be applicable to applications and patents subject to AIA 35 U.S.C. 102 but the relevant time is before the effective filing date of the claimed invention and not at the time of the invention.]

Jump to MPEP SourceAIA vs Pre-AIA PracticeOn Sale Under AIA (MPEP 2152.02(d))Public Use Under AIA (MPEP 2152.02(c))
Topic

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

1 rules
StatutoryPermittedAlways
[mpep-2133-03-8cd35c3e9452b172596ba869]
Evidence of Invention Sale or Disclosure Required
Note:
An applicant must provide evidence of invention sale or disclosure by others, or the examiner may use personal knowledge. Pre-AIA 35 U.S.C. 102(a) and (b) apply based on when the activity occurred relative to the filing date.

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. If the activity is by an entity other than the inventors, one or more joint inventors, or the assignee, such as sale by another, manufacture by another or disclosure of the invention by the inventor, one or more joint inventors, or the assignee 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 inventor made the invention and only disclosed it to others within the year prior to the effective filing date. Pre-AIA 35 U.S.C. 102(b) is applicable if the activity occurred more than 1 year prior to the effective filing date of a claimed invention in the application.

Jump to MPEP SourceNo 'By Others' Requirement (MPEP 2152.02(f))Pre-AIA 102(a) – Known or Used (MPEP 2132)Assignee as Applicant Signature
Topic

Assignee as Applicant Signature

1 rules
StatutoryPermittedAlways
[mpep-2133-03-5e0908d5553f72e978a59416]
Requirement for On-Sale Activity by Non-Assignee
Note:
If an entity other than the inventors, joint inventors, or assignee engages in on-sale activity of 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. If the activity is by an entity other than the inventors, one or more joint inventors, or the assignee, such as sale by another, manufacture by another or disclosure of the invention by the inventor, one or more joint inventors, or the assignee 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 inventor made the invention and only disclosed it to others within the year prior to the effective filing date. Pre-AIA 35 U.S.C. 102(b) is applicable if the activity occurred more than 1 year prior to the effective filing date of a claimed invention in the application.

Jump to MPEP SourceAssignee as Applicant SignaturePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
Topic

Pre-AIA 102(b) – Statutory Bar (MPEP 2133)

1 rules
StatutoryInformativeAlways
[mpep-2133-03-a03898b0251af7bcda159bdb]
Bars to Patentability for Pre-AIA 102(b)
Note:
This rule outlines the distinct bars to patentability under Pre-AIA 35 U.S.C. 102(b), which apply when an invention has been publicly used or sold more than one year before the application date.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourcePre-AIA 102(b) – Statutory Bar (MPEP 2133)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)AIA vs Pre-AIA 102 (MPEP 2151)
Topic

Commercial Offer for Sale

1 rules
StatutoryPermittedAlways
[mpep-2133-03-171be83902f8fc93cc035cc7]
Nonpublic Sale Constitutes On-Sale Bar
Note:
A nonpublic sale of an invention can still bar it from patentability if it meets the on-sale requirement.

Pre-AIA 35 U.S.C. 102(b) “contains several distinct bars to patentability, each of which relates to activity or disclosure more than one year prior to the date of the application. Two of these – the ‘public use’ and the ‘on sale’ objections – are sometimes considered together although it is quite clear that either may apply when the other does not.” Dart Indus. v. E.I. du Pont de Nemours & Co., 489 F.2d 1359, 1365, 179 USPQ 392, 396 (7th Cir. 1973). There may be a public use of an invention absent any sales activity. Likewise, there may be a nonpublic, e.g., “secret,” sale or offer to sell an invention which nevertheless constitutes a statutory bar. Hobbs v. United States, 451 F.2d 849, 859-60, 171 USPQ 713, 720 (5th Cir. 1971). It is noted that AIA 35 U.S.C. 102(a)(1) uses the same “on sale” term as pre-AIA 35 U.S.C. 102(b) and is treated as having the same meaning. Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 139 S.Ct. 628, 129 USPQ2d 1189 (2019). See MPEP § 2152.02(d).

Jump to MPEP SourceCommercial Offer for SalePre-AIA 102(b) – Statutory Bar (MPEP 2133)Public Use and On-Sale Bar (MPEP 2133.03)

Citations

Primary topicCitation
AIA vs Pre-AIA Practice
Determining Whether Application Is AIA or Pre-AIA
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102
Assignee as Applicant Signature
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
35 U.S.C. § 102(a)
Commercial Offer for Sale
On Sale Under AIA (MPEP 2152.02(d))
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
Public Use Under AIA (MPEP 2152.02(c))
35 U.S.C. § 102(a)(1)
Assignee as Applicant Signature
Commercial Offer for Sale
Determining Whether Application Is AIA or Pre-AIA
No 'By Others' Requirement (MPEP 2152.02(f))
On Sale Under AIA (MPEP 2152.02(d))
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
35 U.S.C. § 102(b)
On Sale Under AIA (MPEP 2152.02(d))
Public Use Under AIA (MPEP 2152.02(c))
35 U.S.C. § 103
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
37 CFR § 2133.03(e)
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
37 CFR § 2133.03(e)(1)
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
37 CFR § 2133.03(e)(6)
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
37 CFR § 2133.03(e)(7)
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
MPEP § 2133.03(a)
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Public Use Under AIA (MPEP 2152.02(c))
MPEP § 2133.03(c)
On Sale Under AIA (MPEP 2152.02(d))
Public Use Under AIA (MPEP 2152.02(c))
MPEP § 2133.03(e)(1)
AIA vs Pre-AIA Practice
Determining Whether Application Is AIA or Pre-AIA
On Sale Under AIA (MPEP 2152.02(d))
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
MPEP § 2152.02(c)
Commercial Offer for Sale
On Sale Under AIA (MPEP 2152.02(d))
Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
Public Use Under AIA (MPEP 2152.02(c))
MPEP § 2152.02(d)

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