MPEP § 2217 — Statement Applying Prior Art in a Request Filed under 35 U.S.C. 302 (Annotated Rules)

§2217 Statement Applying Prior Art in a Request Filed under 35 U.S.C. 302

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

This page consolidates and annotates all enforceable requirements under MPEP § 2217, 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.

Statement Applying Prior Art in a Request Filed under 35 U.S.C. 302

This section addresses Statement Applying Prior Art in a Request Filed under 35 U.S.C. 302. Primary authority: 35 U.S.C. 302, 35 U.S.C. 102, and 35 U.S.C. 151. Contains: 11 requirements, 4 prohibitions, 1 guidance statement, 3 permissions, and 4 other statements.

Key Rules

Topic

Request Content Requirements

40 rules
StatutoryRequiredAlways
[mpep-2217-642db9173cec7fd0c88ff5fa]
Request Must Explain Prior Art for Each Claim
Note:
The request must detail how cited prior art applies to each claim in a reexamination.

The third sentence of 35 U.S.C. 302 indicates that the “request must set forth the pertinency and manner of applying cited prior art to every claim for which reexamination is requested.” 37 CFR 1.510(b)(2) requires that the request include “[a]n identification of every claim for which reexamination is requested, and a detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.” If the request is filed by the patent owner, the request for reexamination may also point out how claims distinguish over cited prior art.

Jump to MPEP Source · 37 CFR 1.510(b)(2)Request Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-e27b0844ff8a2109c5f42085]
Detailed Prior Art Application Required for Reexamination Request
Note:
The request must include an identification of every claim and a detailed explanation of how the cited prior art applies to each claim.

The third sentence of 35 U.S.C. 302 indicates that the “request must set forth the pertinency and manner of applying cited prior art to every claim for which reexamination is requested.” 37 CFR 1.510(b)(2) requires that the request include “[a]n identification of every claim for which reexamination is requested, and a detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.” If the request is filed by the patent owner, the request for reexamination may also point out how claims distinguish over cited prior art.

Jump to MPEP Source · 37 CFR 1.510(b)(2)Request Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryPermittedAlways
[mpep-2217-e7035840d549be4bd460d024]
Prior Art Must Be Patents or Publications
Note:
The prior art used in reexamination must consist solely of patents or printed publications, aligning with the examination regime applied.

The prior art applied may only consist of prior art patents or printed publications. The prior art regime under which the application for the patent was examined (the first-inventor-to-file prior art regime, or the first-to-invent prior art regime) will generally be applied in reexamination of the patent, and any statement in the request applying the prior art must reflect that.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryRequiredAlways
[mpep-2217-0d83bc420ff4885e6aefc823]
Prior Art Regime Must Reflect Examination
Note:
The prior art regime applied during patent examination must be reflected in any statements of prior art used during reexamination.

The prior art applied may only consist of prior art patents or printed publications. The prior art regime under which the application for the patent was examined (the first-inventor-to-file prior art regime, or the first-to-invent prior art regime) will generally be applied in reexamination of the patent, and any statement in the request applying the prior art must reflect that.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryPermittedAlways
[mpep-2217-2d025c5d2196505fa80b7eba]
Requirement for Identifying Prior Art Before Filing Date
Note:
The rule requires identifying any prior art, including patents or published descriptions, that existed before the filing date of a claimed invention.

(1) “the claimed invention was patented” or “described in a printed publication” “before the effective filing date of the claimed invention”; or (2) “the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention.”

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-91e2a80f830e36d33640736d]
Effective Filing Dates Determined Under 102(d)
Note:
The effective filing dates for applications are determined according to the provisions of 35 U.S.C. 102(d), subject to exceptions under 35 U.S.C. 102(b).

These provisions are subject to the exceptions of 35 U.S.C. 102(b), and effective filing dates are determined pursuant to 35 U.S.C. 102(d). For further information as to the first-inventor-to-file prior art regime, see MPEP Chapter 700.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-40d8b7958e1fbb5f7ae6a610]
Effective Filing Dates Determined Under First-Inventor-to-File Regime
Note:
The effective filing dates for patent applications are determined under the first-inventor-to-file prior art regime, subject to exceptions.

These provisions are subject to the exceptions of 35 U.S.C. 102(b), and effective filing dates are determined pursuant to 35 U.S.C. 102(d). For further information as to the first-inventor-to-file prior art regime, see MPEP Chapter 700.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryPermittedAlways
[mpep-2217-979ceee2442be8f80d898822]
Substantial New Questions of Patentability Based on Prior Art
Note:
This rule allows for new patentability questions to be raised based on specific sections of 35 U.S.C. 102 as of March 15, 2013, in the first-to-invent prior art regime.

With respect to the first-to-invent prior art regime, substantial new questions of patentability may be based upon the following portions of 35 U.S.C. 102 (in effect on March 15, 2013):

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaPrior Consideration of Art
StatutoryPermittedAlways
[mpep-2217-80c72d4c7e1dd9bd1c3c7931]
New Patentability Questions Under 35 U.S.C. 103 Based on 102
Note:
This rule permits presenting new questions of patentability under 35 U.S.C. 103 based on the provisions of 35 U.S.C. 102.

Substantial new questions of patentability may also be presented under 35 U.S.C. 103 which are based on the above indicated portions of 35 U.S.C. 102.

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaSubstantial New Question of Patentability
StatutoryRequiredAlways
[mpep-2217-88d834a7b59cf38efd365099]
Patentability Questions Must Be Based on Patents or Publications
Note:
Substantial new questions of patentability in a reexamination proceeding must be based on patents or printed publications, not other matters like public use or inventorship.

Substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 must be based on patents or printed publications. Other matters, such as public use or on sale, inventorship, 35 U.S.C. 101, 35 U.S.C. 112, conduct, etc., will not be considered when making the determination on the request and should not be presented in the request. Further, a prior art patent or printed publication cannot be properly applied as a ground for reexamination if it is merely used as evidence of alleged prior public use or on sale, insufficiency of disclosure, etc. The prior art patent or printed publication must be applied directly to claims under 35 U.S.C. 103 and/or an appropriate portion of 35 U.S.C. 102 or relate to the application of other prior art patents or printed publications to claims on such grounds.

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaOn Sale (MPEP 2152.02(d))
StatutoryProhibitedAlways
[mpep-2217-eca123b8da05fd045d29b692]
Prior Art Cannot Be Used for Public Use Grounds
Note:
A prior art patent or publication cannot be used as grounds for reexamination if it is merely evidence of public use or on sale. It must directly address claim validity under section 102 or 103.

Substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 must be based on patents or printed publications. Other matters, such as public use or on sale, inventorship, 35 U.S.C. 101, 35 U.S.C. 112, conduct, etc., will not be considered when making the determination on the request and should not be presented in the request. Further, a prior art patent or printed publication cannot be properly applied as a ground for reexamination if it is merely used as evidence of alleged prior public use or on sale, insufficiency of disclosure, etc. The prior art patent or printed publication must be applied directly to claims under 35 U.S.C. 103 and/or an appropriate portion of 35 U.S.C. 102 or relate to the application of other prior art patents or printed publications to claims on such grounds.

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtOn Sale (MPEP 2152.02(d))
StatutoryRequiredAlways
[mpep-2217-9e1033af1f5f817f3e2a7956]
Prior Art Must Directly Apply to Claims
Note:
The prior art must be directly applied to claims under 35 U.S.C. 102 or 103, or relate to other prior art for reexamination.

Substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 must be based on patents or printed publications. Other matters, such as public use or on sale, inventorship, 35 U.S.C. 101, 35 U.S.C. 112, conduct, etc., will not be considered when making the determination on the request and should not be presented in the request. Further, a prior art patent or printed publication cannot be properly applied as a ground for reexamination if it is merely used as evidence of alleged prior public use or on sale, insufficiency of disclosure, etc. The prior art patent or printed publication must be applied directly to claims under 35 U.S.C. 103 and/or an appropriate portion of 35 U.S.C. 102 or relate to the application of other prior art patents or printed publications to claims on such grounds.

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtNovelty / Prior Art
StatutoryPermittedAlways
[mpep-2217-7573df859c8e43d3fa3393c7]
Claims Only Entitled to Filing Date of Patent
Note:
Patent claims are limited to the filing date of the patent and do not inherit support from earlier applications, allowing prior art from intervening patents or publications.

The statement applying the prior art may, where appropriate, point out that claims in the patent for which reexamination is requested are entitled only to the filing date of the patent and are not supported by an earlier foreign or United States patent application whose filing date is claimed. For example, the effective date of some of the claims in a patent which resulted from a continuing application under 35 U.S.C. 120 could be the filing date of the continuing application since those claims were not supported in the parent application. Therefore, intervening patents or printed publications are available as prior art. See In re Ruscetta, 255 F.2d 687, 118 USPQ 101 (CCPA 1958), In re van Langenhoven, 458 F.2d 132, 173 USPQ 426 (CCPA 1972). See also MPEP § 211.05.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-523b234f34507a35ec53612a]
Claims in Continuing Applications May Use Later Filing Date for Prior Art
Note:
Claims added to a continuing application under 35 U.S.C. 120 can use the filing date of the continuing application, making intervening patents and publications available as prior art.

The statement applying the prior art may, where appropriate, point out that claims in the patent for which reexamination is requested are entitled only to the filing date of the patent and are not supported by an earlier foreign or United States patent application whose filing date is claimed. For example, the effective date of some of the claims in a patent which resulted from a continuing application under 35 U.S.C. 120 could be the filing date of the continuing application since those claims were not supported in the parent application. Therefore, intervening patents or printed publications are available as prior art. See In re Ruscetta, 255 F.2d 687, 118 USPQ 101 (CCPA 1958), In re van Langenhoven, 458 F.2d 132, 173 USPQ 426 (CCPA 1972). See also MPEP § 211.05.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-d43e8efe1429821bee51de2b]
Substantial New Questions of Patentability Based on Prior Art
Note:
In a reexamination proceeding, substantial new questions of patentability are typically based on prior art patents and publications.

Typically, substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 are based on “prior art” patents and publications. There are exceptions, however. For example, in In re Lonardo, 119 F.3d 960, 43 USPQ2d 1262 (Fed. Cir. 1997), the Federal Circuit upheld a nonstatutory double patenting rejection in which the patent upon which the rejection was based and the patent under reexamination shared the same effective filing date. See also the discussion as to double patenting in MPEP § 2258. Analogously, for reexamination proceedings examined under the first-to-invent prior art regime, a 35 U.S.C. 102(g)(2) rejection may be asserted in a reexamination proceeding based on the examples illustrated below:

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaPrior Consideration of Art
StatutoryInformativeAlways
[mpep-2217-5f914f4c6370aeb6ebfeaab1]
Exceptions to Patentability Based on Prior Art
Note:
This rule outlines that while substantial new questions of patentability in reexamination are typically based on prior art, there are exceptions such as nonstatutory double patenting and first-to-invent prior art regime.

Typically, substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 are based on “prior art” patents and publications. There are exceptions, however. For example, in In re Lonardo, 119 F.3d 960, 43 USPQ2d 1262 (Fed. Cir. 1997), the Federal Circuit upheld a nonstatutory double patenting rejection in which the patent upon which the rejection was based and the patent under reexamination shared the same effective filing date. See also the discussion as to double patenting in MPEP § 2258. Analogously, for reexamination proceedings examined under the first-to-invent prior art regime, a 35 U.S.C. 102(g)(2) rejection may be asserted in a reexamination proceeding based on the examples illustrated below:

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaPrior Consideration of Art
StatutoryInformativeAlways
[mpep-2217-1262829a5b1cb6ef8f477988]
Nonstatutory Double Patenting Rejection Allowed for Same Filing Date
Note:
A nonstatutory double patenting rejection is permitted when the patent in question and the one under reexamination have identical filing dates.

Typically, substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 are based on “prior art” patents and publications. There are exceptions, however. For example, in In re Lonardo, 119 F.3d 960, 43 USPQ2d 1262 (Fed. Cir. 1997), the Federal Circuit upheld a nonstatutory double patenting rejection in which the patent upon which the rejection was based and the patent under reexamination shared the same effective filing date. See also the discussion as to double patenting in MPEP § 2258. Analogously, for reexamination proceedings examined under the first-to-invent prior art regime, a 35 U.S.C. 102(g)(2) rejection may be asserted in a reexamination proceeding based on the examples illustrated below:

Jump to MPEP SourceRequest Content RequirementsSNQ CriteriaPrior Consideration of Art
StatutoryPermittedAlways
[mpep-2217-7c1cc998a0993e80034a8788]
102(g)(2) Rejection in First-to-Invent Reexamination
Note:
A 102(g)(2) rejection can be asserted during a reexamination proceeding under the first-to-invent prior art regime.

Typically, substantial new questions of patentability in a reexamination proceeding filed under 35 U.S.C. 302 are based on “prior art” patents and publications. There are exceptions, however. For example, in In re Lonardo, 119 F.3d 960, 43 USPQ2d 1262 (Fed. Cir. 1997), the Federal Circuit upheld a nonstatutory double patenting rejection in which the patent upon which the rejection was based and the patent under reexamination shared the same effective filing date. See also the discussion as to double patenting in MPEP § 2258. Analogously, for reexamination proceedings examined under the first-to-invent prior art regime, a 35 U.S.C. 102(g)(2) rejection may be asserted in a reexamination proceeding based on the examples illustrated below:

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-0833c490fdb5299447822303]
Detailed Explanation of Pertinency for Cited Prior Art Required in Reexamination Request
Note:
Requester must provide a detailed explanation of how each cited prior art is relevant and applied to every claim subject to reexamination.

The mere citation of new patents or printed publications without an explanation does not comply with 37 CFR 1.510(b)(2). Requester must present an explanation of how the cited patents or printed publications are applied to all claims which requester considers to merit reexamination. This not only sets forth the requester’s position to the Office, but also to the patent owner (where the patent owner is not the requester). A request for reexamination, including the citation form (form on which the references are listed), must not include citations to background references or other references which are not used to support a SNQ or proposed rejection of the claims, and explained in the request as to providing such support. Without explanation for each of the references the request seeks to make of record, the request lacks the requisite “detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.”

Jump to MPEP Source · 37 CFR 1.510(b)(2)Request Content RequirementsPrior Consideration of ArtEx Parte Reexamination Request
StatutoryRequiredAlways
[mpep-2217-562fc0a5befc34ef6cad510d]
Request Must Explain Document Combinations for Claims
Note:
The request must explain how each cited document applies to the claims it supports, detailing the role of each reference in the combination.

Thus, for example, once the request has cited documents (patents and printed publications) and proposed combinations of the documents as to patent claims 1-10 (for example), the request must explain how each of the proposed combinations specifically applies to each claim that it is asserted against (i.e., claims 1 – 10), explaining how each document (reference) identified for the combination is used.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryRequiredAlways
[mpep-2217-3b9a40729487061feb722245]
Requirement for Comparing Claims with References
Note:
The rule requires using a claim chart to compare each claim in the reexamination request with relevant teachings from cited references, limitation by limitation.

Ideally, the required explanation can be provided using an appropriately detailed claim chart that compares, limitation by limitation, each claim for which reexamination is requested with the relevant teachings of each reference cited in the request. See the sample request for reexamination in MPEP § 2214.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryProhibitedAlways
[mpep-2217-889e2f2bae21980895d52f9e]
Requirement for Proposed Reference Combinations in Obviousness Rejections
Note:
The rule requires that at least one basis for combining references be provided, along with a statement of why the claims would have been obvious over the combination.

For proposed obviousness rejections, requester must provide at least one basis for combining the cited references, and a statement of why the claim(s) under reexamination would have been obvious over the proposed reference combination. Preferably, the requester should quote the pertinent teachings in the reference, referencing each quote by page, column and line number and any relevant figure numbers. The explanation must not lump together the proposed rejections or proposed combinations of references.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-82217d5e07deefeacc60a31f]
Claim Anticipation and Obviousness Over Smith
Note:
The claim is unpatentable as anticipated by, or alternatively obvious over, the Smith reference under sections 35 U.S.C. 102 and 103.

– Claim 1 is unpatentable under 35 U.S.C. 102 as being anticipated by, or in the alternative, under 35 U.S.C. 103 as being obvious over the Smith reference.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-3bd7f1a3251754904c9e20e0]
Claim Unpatentable Over Prior Art
Note:
Claim 1 is unpatentable under 35 U.S.C. 103 as being obvious over Smith and/or Charles.

– Claim 1 is unpatentable under 35 U.S.C. 103 as being obvious over Smith and/or Charles.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryPermittedAlways
[mpep-2217-f4ea9837fc9b0edec9bf84c0]
Claim 2 Is Unpatentable Over Smith in View of Jones or Harvey
Note:
Claim 2 is considered obvious over Smith, combined with either Jones or Harvey's teachings.

– Claim 2 is unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Jones or Harvey. (This could however be used if both Jones and Harvey provide a minor teaching which can be articulated in a sentence or two.)

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-74db6c5002afb2314b6dcf99]
Claims 3-10 Are Obvious Over Smith in View of Jones and Cooper or Harvey and Cooper
Note:
Claims 3 through 10 do not meet the patentability requirements as they are considered obvious when compared to the combination of Smith with either Jones and Cooper, or Harvey and Cooper.

– Claims 3 – 10 are unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of either Jones and Cooper or Harvey and Cooper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-53cc7bb787ea4fffb6664a25]
Claims 3-10 Are Obvious Over Smith in View of Harvey and Cooper
Note:
The claims from 3 to 10 are considered unpatentable as they can be seen as obvious when considering the prior art of Smith, followed by Harvey, and further supported by Cooper.

– Claims 3 – 10 are unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Harvey, taken alone or further in view of Cooper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-a0e4f6d2198e43f7e3927fdd]
Claim 1 Anticipated by Smith
Note:
Claim 1 is considered unpatentable as it is anticipated by the prior art disclosed in Smith's work.

– Claim 1 is unpatentable under 35 U.S.C. 102 as being anticipated by Smith.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-8d9d2503a87a6731fcff90a1]
Claim 1 Is Obvious Over Smith
Note:
Claim 1 is considered unpatentable as it lacks an inventive step compared to the teachings of Smith.

– Claim 1 is unpatentable under 35 U.S.C. 103 as being obvious over Smith.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-6e6d563dc17d2efdc6065e81]
Claim Unpatentable Over Prior Art
Note:
A claim is considered obvious over prior art and thus unpatentable under 35 U.S.C. 103.

– Claim 1 is unpatentable under 35 U.S.C. 103 as being obvious over Charles.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-2049d1c79dafd79e690e6ef8]
Claim Unpatentable Over Prior Art
Note:
Claim 2 is unpatentable as being obvious over Smith in view of Jones under 35 U.S.C. 103.

– Claim 2 is unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Jones.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-b90f34f8281624f5d58aef42]
Claim 2 Is Unpatentable Over Smith and Harvey
Note:
Claim 2 is considered obvious over the combination of Smith and Harvey, failing to meet patentability requirements.

– Claim 2 is unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Harvey.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-52046739160674151db8c819]
Claims 3-10 Are Obvious Over Smith, Jones, and Cooper
Note:
The claims from 3 to 10 are considered obvious in view of the prior art references Smith, Jones, and Cooper.

– Claims 3 – 10 are unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Jones, and further in view of Cooper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-bd9dad827063803f921f1c35]
Claims 3-10 are Unpatentable Over Smith, Harvey, and Cooper
Note:
The claims from 3 to 10 do not meet the patentability requirements as they can be considered obvious in light of the prior art references Smith, Harvey, and Cooper.

– Claims 3 – 10 are unpatentable under 35 U.S.C. 103 as being obvious over Smith in view of Harvey, and further in view of Cooper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryPermittedAlways
[mpep-2217-3680ad6d2b105083d95d7521]
Detail Explanation of Prior Art Allowed in Reexamination
Note:
Affidavits or declarations detailing prior art patents or publications can be considered during reexamination.

Affidavits or declarations or other written evidence which explain the contents or pertinent dates of prior art patents or printed publications in more detail may be considered in reexamination. See MPEP § 2258.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-4978ea0a9039a964f4895b32]
Ex Parte Reexamination Consideration Limited to Patents and Publications
Note:
The consideration of a request for ex parte reexamination is restricted to prior art patents and printed publications, not including admissions by the patent owner.

The consideration under 35 U.S.C. 303 of a request for ex parte reexamination filed under 35 U.S.C. 302 is limited to prior art patents and printed publications. See Ex parte McGaughey, 6 USPQ2d 1334, 1337 (Bd. Pat. App. & Inter. 1988). Thus an admission, per se, may not be the basis for establishing a substantial new question of patentability. However, an admission by the patent owner of record in the file or in a court record may be utilized in combination with a patent or printed publication.

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtEx Parte Reexamination Request
StatutoryPermittedAlways
[mpep-2217-80b15f9b7883477c2ceedf43]
Admission of Prior Art in Reexamination
Note:
An admission regarding prior art made during patent prosecution, reexamination, or litigation can be used by the examiner to combine with other patents and publications.

The admission can reside in the patent file (made of record during the prosecution of the patent application) or may be presented during the pendency of the reexamination proceeding or in litigation. Admissions by the patent owner as to any matter affecting patentability may be utilized to determine the scope and content of the prior art in conjunction with patents and printed publications in a prior art rejection, whether such admissions result from patents or printed publications or from some other source. An admission relating to any prior art established in the record or in court may be used by the examiner in combination with patents or printed publications in a reexamination proceeding. The admission must stand on its own. Information supplementing or further defining the admission would be improper.

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtEx Parte Reexamination
StatutoryRequiredAlways
[mpep-2217-10275c5fa921a5d0f704d857]
Admissions Must Be Self-Sufficient in Patent Proceedings
Note:
Patent admissions must be independently sufficient and cannot rely on additional information to support their validity.

The admission can reside in the patent file (made of record during the prosecution of the patent application) or may be presented during the pendency of the reexamination proceeding or in litigation. Admissions by the patent owner as to any matter affecting patentability may be utilized to determine the scope and content of the prior art in conjunction with patents and printed publications in a prior art rejection, whether such admissions result from patents or printed publications or from some other source. An admission relating to any prior art established in the record or in court may be used by the examiner in combination with patents or printed publications in a reexamination proceeding. The admission must stand on its own. Information supplementing or further defining the admission would be improper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-42e5dd8aee0440390f29ec78]
Admissions Must Stand Alone
Note:
Admissions by the patent owner must be used independently and not supplemented with additional information.

The admission can reside in the patent file (made of record during the prosecution of the patent application) or may be presented during the pendency of the reexamination proceeding or in litigation. Admissions by the patent owner as to any matter affecting patentability may be utilized to determine the scope and content of the prior art in conjunction with patents and printed publications in a prior art rejection, whether such admissions result from patents or printed publications or from some other source. An admission relating to any prior art established in the record or in court may be used by the examiner in combination with patents or printed publications in a reexamination proceeding. The admission must stand on its own. Information supplementing or further defining the admission would be improper.

Jump to MPEP SourceRequest Content RequirementsEx Parte Reexamination RequestEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-f09f1337fdc0a0eea15313b6]
Admissions Outside Record Not Admissible
Note:
A third party may not submit admissions made outside the record unless entered into a court record, which would then be considered but not used to establish patentability.

Any admission submitted by the patent owner is proper. A third party, however, may not submit admissions of the patent owner made outside the record of the file or the court record, unless such admissions were entered into a court record. If an admission made outside the record of the file or the court record is entered into a court record and a copy thereof is then filed in a reexamination (as a copy of a paper filed in the court), such paper could be admitted pursuant to MPEP § 2282; however, such would not be given weight as an admission with respect to use in establishing a substantial new question of patentability, or as a basis in rejecting claims. Such a submission would be outside the scope of reexamination.

Jump to MPEP SourceRequest Content RequirementsPrior Consideration of ArtEx Parte Reexamination Request
Topic

Third Party Requester

6 rules
StatutoryRequiredAlways
[mpep-2217-35be568fae5b10fce6148309]
Requester Must Provide Combination Basis and Obviousness Explanation
Note:
The requester must provide at least one basis for combining the cited references and explain why the claim(s) would have been obvious over the proposed reference combination.

For proposed obviousness rejections, requester must provide at least one basis for combining the cited references, and a statement of why the claim(s) under reexamination would have been obvious over the proposed reference combination. Preferably, the requester should quote the pertinent teachings in the reference, referencing each quote by page, column and line number and any relevant figure numbers. The explanation must not lump together the proposed rejections or proposed combinations of references.

Jump to MPEP SourceThird Party RequesterRequest Content RequirementsObviousness
StatutoryRecommendedAlways
[mpep-2217-72d44e8301c0fc082f507170]
Requirement for Applying Prior Art in Third Party Reexamination Request
Note:
The rule requires that a third party requester must provide evidence of prior art and explain how the claims would be obvious over the proposed references.

For proposed obviousness rejections, requester must provide at least one basis for combining the cited references, and a statement of why the claim(s) under reexamination would have been obvious over the proposed reference combination. Preferably, the requester should quote the pertinent teachings in the reference, referencing each quote by page, column and line number and any relevant figure numbers. The explanation must not lump together the proposed rejections or proposed combinations of references.

Jump to MPEP SourceThird Party RequesterRequest Content RequirementsEx Parte Reexamination Request
StatutoryRequiredAlways
[mpep-2217-ee3c50645d9de2398a510796]
Explanation Required for Document, Combination, or Claim
Note:
If a requester fails to provide an explanation for any document, combination, or claim, they must either explain each item or withdraw the request.
Any failure to provide the required explanation for any document, combination, or claim will be identified in a “Notice of Failure to Comply with Ex Parte Reexamination Request Filing Requirements” (see MPEP § 2227). If a requester receives such a notice that identifies one or more documents, combinations, or claims for which an explanation was not given, the requester has the option to respond by either:
  • (A) providing a separate explanation for each combination, document, and claim identified in the notice as lacking explanation; or
  • (B) explicitly withdrawing any document, combination, or claim for which reexamination was requested for which there is no explanation. Obviously, once this is done, requester need not provide an explanation for the withdrawn document, combination, or claim. Thus, for example, if the requester’s response to the notice explicitly withdraws the request as to claims 6-10, then the documents and their combinations need only be applied separately as to claims 1-5 of the patent. Likewise, if the requester’s response to the notice explicitly withdraws the Jones patent from the request, then no explanation is required as to the Jones reference, and all combinations advanced in the request that contained Jones are deemed to be withdrawn.
Jump to MPEP SourceThird Party RequesterRequest Content RequirementsEx Parte Reexamination Request
StatutoryInformativeAlways
[mpep-2217-438bdb18be7783992e37d2ab]
Option to Withdraw Unexplained Claims During Reexamination
Note:
A requester can withdraw claims that lack an explanation, thereby not needing to provide further justification for those claims.

Any failure to provide the required explanation for any document, combination, or claim will be identified in a “Notice of Failure to Comply with Ex Parte Reexamination Request Filing Requirements” (see MPEP § 2227). If a requester receives such a notice that identifies one or more documents, combinations, or claims for which an explanation was not given, the requester has the option to respond by either:

(B) explicitly withdrawing any document, combination, or claim for which reexamination was requested for which there is no explanation. Obviously, once this is done, requester need not provide an explanation for the withdrawn document, combination, or claim. Thus, for example, if the requester’s response to the notice explicitly withdraws the request as to claims 6-10, then the documents and their combinations need only be applied separately as to claims 1-5 of the patent.

Jump to MPEP SourceThird Party RequesterRequest Content RequirementsEx Parte Reexamination Request
StatutoryRequiredAlways
[mpep-2217-1beb7c6ca340f8fc1a91aaf7]
Withdraw Jones Patent from Request
Note:
If the requester explicitly withdraws the Jones patent, no explanation is required for it and all related combinations are deemed withdrawn.

Any failure to provide the required explanation for any document, combination, or claim will be identified in a “Notice of Failure to Comply with Ex Parte Reexamination Request Filing Requirements” (see MPEP § 2227). If a requester receives such a notice that identifies one or more documents, combinations, or claims for which an explanation was not given, the requester has the option to respond by either:

Likewise, if the requester’s response to the notice explicitly withdraws the Jones patent from the request, then no explanation is required as to the Jones reference, and all combinations advanced in the request that contained Jones are deemed to be withdrawn.

Jump to MPEP SourceThird Party RequesterRequest Content RequirementsEx Parte Reexamination Request
StatutoryPermittedAlways
[mpep-2217-6a2f652cf499473a81cc30b7]
Explanation Required for Non-Compliant Requests
Note:
A request may be accepted if it explains how cited patents or publications apply to all claims in a non-compliant reexamination request.

Even if the request fails to comply with one of the above-identified requirements, the request may be accepted if it is readily understood from the explanation provided in the request as to how the cited patents or printed publications are applied to all claims which requester considers to merit reexamination.

Jump to MPEP SourceThird Party RequesterRequest Content RequirementsEx Parte Reexamination Request
Topic

Request by Patent Owner

5 rules
StatutoryPermittedAlways
[mpep-2217-8103bec309dc9e35477d6496]
Patent Owner Can Point Out Claim Distinction in Reexamination Request
Note:
If the request is filed by the patent owner, they may also explain how claims distinguish over cited prior art in a reexamination request.

The third sentence of 35 U.S.C. 302 indicates that the “request must set forth the pertinency and manner of applying cited prior art to every claim for which reexamination is requested.” 37 CFR 1.510(b)(2) requires that the request include “[a]n identification of every claim for which reexamination is requested, and a detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.” If the request is filed by the patent owner, the request for reexamination may also point out how claims distinguish over cited prior art.

Jump to MPEP Source · 37 CFR 1.510(b)(2)Request by Patent OwnerRequest Content RequirementsEx Parte Reexamination Request
StatutoryRequiredAlways
[mpep-2217-df6daf2e4e9c0aa1f2bdb8c4]
Explanation of Cited References Must Be Provided for Reexamination Request
Note:
Requester must explain how cited patents or publications apply to claims being reexamined, both to the Office and patent owner.

The mere citation of new patents or printed publications without an explanation does not comply with 37 CFR 1.510(b)(2). Requester must present an explanation of how the cited patents or printed publications are applied to all claims which requester considers to merit reexamination. This not only sets forth the requester’s position to the Office, but also to the patent owner (where the patent owner is not the requester). A request for reexamination, including the citation form (form on which the references are listed), must not include citations to background references or other references which are not used to support a SNQ or proposed rejection of the claims, and explained in the request as to providing such support. Without explanation for each of the references the request seeks to make of record, the request lacks the requisite “detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.”

Jump to MPEP Source · 37 CFR 1.510(b)(2)Request by Patent OwnerThird Party RequesterRequest Content Requirements
StatutoryProhibitedAlways
[mpep-2217-f361fac625da800dce858559]
Admissions by Patent Owner Can Support New Question of Patentability
Note:
An admission by the patent owner in the file or court record can be used to establish a new question of patentability when combined with prior art.

The consideration under 35 U.S.C. 303 of a request for ex parte reexamination filed under 35 U.S.C. 302 is limited to prior art patents and printed publications. See Ex parte McGaughey, 6 USPQ2d 1334, 1337 (Bd. Pat. App. & Inter. 1988). Thus an admission, per se, may not be the basis for establishing a substantial new question of patentability. However, an admission by the patent owner of record in the file or in a court record may be utilized in combination with a patent or printed publication.

Jump to MPEP SourceRequest by Patent OwnerRequest Content RequirementsSNQ Criteria
StatutoryPermittedAlways
[mpep-2217-3417d4a1d61099a10f35b638]
Admissions by Patent Owner Affecting Patentability Must Stand Alone
Note:
Patent owner's admissions regarding patentability must be used independently and not supplemented with additional information in determining prior art.

The admission can reside in the patent file (made of record during the prosecution of the patent application) or may be presented during the pendency of the reexamination proceeding or in litigation. Admissions by the patent owner as to any matter affecting patentability may be utilized to determine the scope and content of the prior art in conjunction with patents and printed publications in a prior art rejection, whether such admissions result from patents or printed publications or from some other source. An admission relating to any prior art established in the record or in court may be used by the examiner in combination with patents or printed publications in a reexamination proceeding. The admission must stand on its own. Information supplementing or further defining the admission would be improper.

Jump to MPEP SourceRequest by Patent OwnerRequest Content RequirementsSNQ Criteria
StatutoryProhibitedAlways
[mpep-2217-61bf4f912063292ffd636cbe]
Patent Owner Admissions Outside Record Not Admissible in Reexamination
Note:
This rule prohibits third parties from submitting patent owner admissions made outside the record of the file or court record unless entered into a court record and filed in reexamination.

Any admission submitted by the patent owner is proper. A third party, however, may not submit admissions of the patent owner made outside the record of the file or the court record, unless such admissions were entered into a court record. If an admission made outside the record of the file or the court record is entered into a court record and a copy thereof is then filed in a reexamination (as a copy of a paper filed in the court), such paper could be admitted pursuant to MPEP § 2282; however, such would not be given weight as an admission with respect to use in establishing a substantial new question of patentability, or as a basis in rejecting claims. Such a submission would be outside the scope of reexamination.

Jump to MPEP SourceRequest by Patent OwnerThird Party RequesterRequest Content Requirements
Topic

Ex Parte Reexamination Request

4 rules
StatutoryInformativeAlways
[mpep-2217-21db6e421d30695ae5d24ef9]
Claims Not Supported by Earlier Application Are Entitled to Filing Date Only
Note:
Claims in a patent resulting from a continuing application are entitled only to the filing date of the continuing application if not supported by an earlier application, making intervening patents or publications available as prior art.

The statement applying the prior art may, where appropriate, point out that claims in the patent for which reexamination is requested are entitled only to the filing date of the patent and are not supported by an earlier foreign or United States patent application whose filing date is claimed. For example, the effective date of some of the claims in a patent which resulted from a continuing application under 35 U.S.C. 120 could be the filing date of the continuing application since those claims were not supported in the parent application. Therefore, intervening patents or printed publications are available as prior art. See In re Ruscetta, 255 F.2d 687, 118 USPQ 101 (CCPA 1958), In re van Langenhoven, 458 F.2d 132, 173 USPQ 426 (CCPA 1972). See also MPEP § 211.05.

Jump to MPEP SourceEx Parte Reexamination RequestEx Parte ReexaminationRequest Content Requirements
StatutoryInformativeAlways
[mpep-2217-f9cb8c7adf8220b42f62e726]
Explanation of Cited References Must Be Provided in Reexamination Request
Note:
Requesters must explain how newly cited patents or printed publications support the claims being reexamined.

The mere citation of new patents or printed publications without an explanation does not comply with 37 CFR 1.510(b)(2). Requester must present an explanation of how the cited patents or printed publications are applied to all claims which requester considers to merit reexamination. This not only sets forth the requester’s position to the Office, but also to the patent owner (where the patent owner is not the requester). A request for reexamination, including the citation form (form on which the references are listed), must not include citations to background references or other references which are not used to support a SNQ or proposed rejection of the claims, and explained in the request as to providing such support. Without explanation for each of the references the request seeks to make of record, the request lacks the requisite “detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.”

Jump to MPEP Source · 37 CFR 1.510(b)(2)Ex Parte Reexamination RequestEx Parte ReexaminationRequest Content Requirements
StatutoryProhibitedAlways
[mpep-2217-0dc0620edcaea5e299f4014f]
Request for Reexamination Must Include Only Pertinent Citations
Note:
The request for reexamination must include only citations that support a SNQ or proposed rejection of claims, with an explanation provided.

The mere citation of new patents or printed publications without an explanation does not comply with 37 CFR 1.510(b)(2). Requester must present an explanation of how the cited patents or printed publications are applied to all claims which requester considers to merit reexamination. This not only sets forth the requester’s position to the Office, but also to the patent owner (where the patent owner is not the requester). A request for reexamination, including the citation form (form on which the references are listed), must not include citations to background references or other references which are not used to support a SNQ or proposed rejection of the claims, and explained in the request as to providing such support. Without explanation for each of the references the request seeks to make of record, the request lacks the requisite “detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested.”

Jump to MPEP Source · 37 CFR 1.510(b)(2)Ex Parte Reexamination RequestSubstantial New Question of PatentabilityEx Parte Reexamination
StatutoryInformativeAlways
[mpep-2217-b5a7d3bac4d624af6f90197a]
Requirement for Claim Comparison with References
Note:
The rule requires an appropriately detailed claim chart that compares each claim with the relevant teachings of each reference cited in the request for reexamination.

Ideally, the required explanation can be provided using an appropriately detailed claim chart that compares, limitation by limitation, each claim for which reexamination is requested with the relevant teachings of each reference cited in the request. See the sample request for reexamination in MPEP § 2214.

Jump to MPEP SourceEx Parte Reexamination RequestEx Parte ReexaminationRequest Content Requirements
Topic

AIA Effective Dates

1 rules
StatutoryRequiredAlways
[mpep-2217-74656ef79da740dd96be41a8]
Patentability Based on New Prior Art Rules
Note:
Substantial new questions of patentability may be based on the provisions of 35 U.S.C. 102 as it applies to prior art patents and printed publications after March 16, 2013.

With respect to the first-inventor-to-file prior art regime, substantial new questions of patentability may be based upon the provisions of 35 U.S.C. 102 as it is in effect on and after March 16, 2013, applicable to prior art patents and printed publications. Thus “A person shall be entitled to a patent unless”:

Jump to MPEP SourceAIA Effective DatesRequest Content RequirementsSNQ Criteria
Topic

Reexamination Certificate

1 rules
StatutoryRequiredAlways
[mpep-2217-65f33b88ae8110bd1a7e4a60]
Invention Described Before Filing
Note:
The invention must not have been described in a printed publication or patented before the filing date of the U.S. patent application, unless it falls under specific exceptions.

“(a)…patented or described in a printed publication in this or a foreign country, before the invention thereof by the applicant for patent, or” “(b) the invention was patented or described in a printed publication in this or a foreign country… more than one year prior to the date of the application for patent in the United States, or” ***** “(d) the invention was first patented or caused to be patented, or was the subject of an inventor’s certificate, by the applicant or his legal representatives or assigns in a foreign country prior to the date of the application for patent in this country on an application for patent or inventor’s certificate filed more than twelve months before the filing of the application in the United States, or” “(e) the invention was described in — (1) an application for patent, published under section 122(b), by another filed in the United States before the invention by the applicant for patent or (2) a patent granted on an application for patent by another filed in the United States before the invention by the applicant for patent, except that an international application filed under the treaty defined in section 351(a) shall have the effects for the purposes of this subsection of an application filed in the United States only if the international application designated the United States and was published under Article 21(2) of such treaty in the English language; or” ***** “(g)…(2) before such person’s invention thereof, the invention was made in this country by another inventor who had not abandoned, suppressed, or concealed it….”

Jump to MPEP SourceReexamination CertificateNationals and ResidentsPublication Language
Topic

Reexamination Order

1 rules
StatutoryInformativeAlways
[mpep-2217-d7548851f74b0a774b9f9d4f]
Handling Admissions After Reexamination Order
Note:
This rule outlines how to manage admissions during the examination stage of a proceeding after a reexamination order has been issued, directing readers to MPEP § 2258 for further details.

For handling of admissions during the examination stage of a proceeding (i.e., after reexamination has been ordered), see MPEP § 2258.

Jump to MPEP SourceReexamination OrderRequest Content RequirementsEx Parte Reexamination Request

Citations

Primary topicCitation
Request Content Requirements35 U.S.C. § 101
AIA Effective Dates
Request Content Requirements
35 U.S.C. § 102
Request Content Requirements35 U.S.C. § 102(b)
Request Content Requirements35 U.S.C. § 102(d)
Request Content Requirements35 U.S.C. § 102(g)(2)
Request Content Requirements35 U.S.C. § 103
Request Content Requirements35 U.S.C. § 112
Ex Parte Reexamination Request
Request Content Requirements
35 U.S.C. § 120
Request Content Requirements
Request by Patent Owner
35 U.S.C. § 302
Request Content Requirements
Request by Patent Owner
35 U.S.C. § 303
Ex Parte Reexamination Request
Request Content Requirements
Request by Patent Owner
37 CFR § 1.510(b)(2)
Ex Parte Reexamination Request
Request Content Requirements
MPEP § 211.05
Ex Parte Reexamination Request
Request Content Requirements
MPEP § 2214
Third Party RequesterMPEP § 2227
Reexamination Order
Request Content Requirements
MPEP § 2258
Request Content Requirements
Request by Patent Owner
MPEP § 2282
Request Content RequirementsIn re Lonardo, 119 F.3d 960, 43 USPQ2d 1262 (Fed. Cir. 1997)
Ex Parte Reexamination Request
Request Content Requirements
In re Ruscetta, 255 F.2d 687, 118 USPQ 101 (CCPA 1958)
Ex Parte Reexamination Request
Request Content Requirements
In re van Langenhoven, 458 F.2d 132, 173 USPQ 426 (CCPA 1972)

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