MPEP § 1504.06 — Double Patenting (Annotated Rules)

§1504.06 Double Patenting

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

This page consolidates and annotates all enforceable requirements under MPEP § 1504.06, 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.

Double Patenting

This section addresses Double Patenting. Primary authority: 35 U.S.C. 171, 35 U.S.C. 102(c), and 35 U.S.C. 103(c)(2). Contains: 3 requirements, 1 prohibition, 2 guidance statements, 5 permissions, and 10 other statements.

Key Rules

Topic

Anticipation/Novelty

10 rules
StatutoryInformativeAlways
[mpep-1504-06-f61726c0eeb482931ae5378a]
Prevent Multiple Suits for Same Invention Variations
Note:
This rule prevents different assignees from filing multiple lawsuits against an accused infringer for patentably indistinct variations of the same invention.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-1c586902b10e48d0cf69a42c]
Requirement for Terminal Disclaimer to Overcome Rejection
Note:
A patent owner must submit a terminal disclaimer to overcome a double patenting rejection when claiming obvious variations of one invention.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-d6623a65b2bf5d69c2facd21]
Terminal Disclaimer Required to Overcome Double Patenting Rejection
Note:
A patent owner must submit a terminal disclaimer in compliance with 37 CFR 1.321(b) to retain all patents claiming obvious variations of one invention or sell them as a group.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-9143fadac75d918da350281b]
Requirement for Terminal Disclaimer to Overcome Nonstatutory Double Patenting Rejection
Note:
The rule requires submitting a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a nonstatutory double patenting rejection.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-8593a512c9fda63ccaf234a0]
Nonstatutory Double Patenting Rejections Based on Anticipation and Obviousness
Note:
The rule outlines the types of rejections under nonstatutory double patenting, including those based on anticipation and a one-way or two-way determination of obviousness.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-86502af4a2feade02573f701]
Equitable Principle Against Timewise Extension of Patent Rights
Note:
This rule prevents unjustified extensions of patent rights by rejecting claims that extend beyond the original filing date.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryInformativeAlways
[mpep-1504-06-1483e51bb844567a9768d562]
Requirement for Nonstatutory Double Patenting Rejection
Note:
The rule requires that a rejection based on nonstatutory double patenting be made to prevent multiple suits against an accused infringer by different assignees of patents claiming obvious variations of one invention.

The doctrine of nonstatutory double patenting also seeks to prevent the possibility of multiple suits against an accused infringer by different assignees of patents claiming patentably indistinct variations of the same invention. In re Van Ornum, 686 F.2d 937, 944-48, 214 USPQ 761, 767-70 (CCPA 1982). The submission of a terminal disclaimer in compliance with 37 CFR 1.321(b) to overcome a double patenting rejection ensures that a patent owner with multiple patents claiming obvious variations of one invention retains all those patents or sells them as a group. Van Ornum, 686 F.2d at 944-45, 214 USPQ at 767. Nonstatutory double patenting includes rejections based on anticipation, a one-way determination of “obviousness,” or a two-way determination of “obviousness.” It is important to note that the “obviousness” analysis for nonstatutory double patenting is “similar to, but not necessarily the same as, that undertaken under 35 U.S.C. 103.” In re Braat, 937 F.2d 589, 592-93, 19 USPQ2d 1289, 1292 (Fed. Cir. 1991) (citing In re Longi, 759 F.2d 887, 892 n.4, 225 USPQ 645, 648 n.4 (Fed. Cir. 1985)); Geneva Pharmaceuticals, 349 F.3d 1373, 1378 n.1, 68 USPQ2d 1865, 1869 n.1 (Fed Cir. 2003). In addition, nonstatutory double patenting also includes rejections based on the equitable principle against permitting an unjustified timewise extension of patent rights. See In re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968); see also MPEP § 804, subsection II.B.6.

Jump to MPEP Source · 37 CFR 1.321(b)Anticipation/NoveltyObviousness
StatutoryPermittedAlways
[mpep-1504-06-6df69e2b91d2aab3bbf5cbfd]
Nonstatutory Double Patenting Rejection Between Applications
Note:
A nonstatutory double patenting rejection can be made between a patent and an application or provisionally between applications, but only if the patent issued within the last year before the filing date of the application.

A nonstatutory double patenting rejection may be made between a patent and an application or provisionally between applications. Such rejection over a patent may only be necessary if the patent issued less than a year before the filing date of the application. If the patent is more than a year older than the application, the patent is considered to be “prior art” under 35 U.S.C. 102(a)(1) or pre-AIA 35 U.S.C. 102(b) which may be applied in an anticipation or obviousness rejection as applicable. The purpose of a terminal disclaimer is to obviate a nonstatutory double patenting rejection by removing potential harm to the public by issuing a second patent. See MPEP § 804.

Jump to MPEP SourceAnticipation/NoveltyObviousnessPrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryPermittedAlways
[mpep-1504-06-9191761ce60fafd1c0ccd4e9]
Patent Over One Year Old Is Prior Art
Note:
If a patent is more than one year older than an application, it may be used as prior art in anticipation or obviousness rejections.

A nonstatutory double patenting rejection may be made between a patent and an application or provisionally between applications. Such rejection over a patent may only be necessary if the patent issued less than a year before the filing date of the application. If the patent is more than a year older than the application, the patent is considered to be “prior art” under 35 U.S.C. 102(a)(1) or pre-AIA 35 U.S.C. 102(b) which may be applied in an anticipation or obviousness rejection as applicable. The purpose of a terminal disclaimer is to obviate a nonstatutory double patenting rejection by removing potential harm to the public by issuing a second patent. See MPEP § 804.

Jump to MPEP SourceAnticipation/NoveltyObviousnessPrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-1504-06-547580b86823ee2f65334301]
Terminal Disclaimer to Avoid Double Patenting Rejection
Note:
A terminal disclaimer is required to avoid a rejection based on nonstatutory double patenting by ensuring the second patent does not overlap with an existing one issued within the last year.

A nonstatutory double patenting rejection may be made between a patent and an application or provisionally between applications. Such rejection over a patent may only be necessary if the patent issued less than a year before the filing date of the application. If the patent is more than a year older than the application, the patent is considered to be “prior art” under 35 U.S.C. 102(a)(1) or pre-AIA 35 U.S.C. 102(b) which may be applied in an anticipation or obviousness rejection as applicable. The purpose of a terminal disclaimer is to obviate a nonstatutory double patenting rejection by removing potential harm to the public by issuing a second patent. See MPEP § 804.

Jump to MPEP SourceAnticipation/NoveltyObviousnessPrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Topic

Statutory Double Patenting

7 rules
StatutoryPermittedAlways
[mpep-1504-06-f4ab51ef1ab3ada50bd93316]
Same Invention Type Rejection Based on 35 U.S.C. 171
Note:
A rejection is made if claims in a second patent are not patentably distinct from claims in a first patent, based on the singular provision that an inventor may obtain 'a patent'.

There are generally two types of double patenting rejections. One is the same invention type or “statutory” double patenting rejection based on 35 U.S.C. 171 which states in the singular that an inventor may obtain “a patent.” The second is the “nonstatutory” double patenting rejection based on a judicially created doctrine grounded in public policy and which is primarily intended to prevent prolongation of the patent term by prohibiting claims in a second patent not patentably distinct from claims in a first patent.

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingDesign Patent Practice
StatutoryPermittedAlways
[mpep-1504-06-95dba68ea859d92995df51b3]
Only One Design Patent Permitted
Note:
A design can only receive one patent, which is the basis for statutory double patenting rejections.

Double patenting rejections are based on a comparison of the claims in a patent and an application or between two applications which have at least one common inventor, common applicant, and/or are commonly assigned/owned or non-commonly assigned/owned but subject to a joint research agreement as set forth in 35 U.S.C. 102(c) or in pre-AIA 35 U.S.C. 103(c)(2) and (3). Notably, 35 U.S.C. 171 specifically states that “a patent” may be obtained if certain conditions are met; this use of the singular makes it clear that only one patent may issue for a design and is the basis for the statutory double patenting rejections.

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingDesign Patent Practice
StatutoryRecommendedAlways
[mpep-1504-06-cbc097bc9bcf8672f6022fae]
Requirement for Same Invention Rejection Based on Statutory Double Patenting
Note:
If the answer is yes to the same design being claimed twice, a rejection under 35 U.S.C. 171 should be made on grounds of statutory double patenting.

Determining if a double patenting rejection is appropriate involves answering the following inquiries: Is the same design being claimed twice? If the answer is yes, then a rejection under 35 U.S.C. 171 should be made on the grounds of “same invention” type or statutory double patenting. If not, are the designs directed to patentably indistinct variations of the same inventive concept? If the answer is yes, then a rejection based on the nonstatutory double patenting should be made.

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingDesign Patent Practice
StatutoryPermittedAlways
[mpep-1504-06-8fb2c9c3afa36f01f39210ed]
Several Utility Patents May Issue With Identical Drawings But Different Claims
Note:
Multiple utility patents can have the same drawings but claim different inventions, making double patenting comparisons complex and not based solely on drawings.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceStatutory Double PatentingDesign Claim FormDesign Application Requirements
StatutoryInformativeAlways
[mpep-1504-06-0f53956a6da4dcbc0be2a6ff]
Design Statutory Double Patenting Rejection Prohibits Issuance of Duplicate Patents
Note:
A second patent for an identical design cannot be issued if the design is already patented under 35 U.S.C. 171.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingDesign Patent Practice
StatutoryRequiredAlways
[mpep-1504-06-81971adc4c9db5d8c90c2463]
Identical Designs with Identical Scope Must Be Twice Claimed
Note:
For a design statutory double patenting rejection to be valid, identical designs must have identical scope claimed twice.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingNonstatutory (Obviousness-Type) Double Patenting
StatutoryPermittedAlways
[mpep-1504-06-9c61edad317cda76a8ee1f85]
Design-Utility 'Same Invention' Double Patenting Rejection Not Statutory
Note:
A design and utility patent cannot be rejected for the same invention based on judicial doctrine as there is no statutory basis under 35 U.S.C. 101 or 171.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceStatutory Double PatentingDesign Double PatentingDesign Patent Practice
Topic

Nonstatutory (Obviousness-Type) Double Patenting

7 rules
StatutoryInformativeAlways
[mpep-1504-06-65e55992451c6f20605352e9]
Prevent Prolongation of Patent Term
Note:
Prohibits claims in a second patent that are not patentably distinct from claims in a first patent to prevent extending the patent term.

There are generally two types of double patenting rejections. One is the same invention type or “statutory” double patenting rejection based on 35 U.S.C. 171 which states in the singular that an inventor may obtain “a patent.” The second is the “nonstatutory” double patenting rejection based on a judicially created doctrine grounded in public policy and which is primarily intended to prevent prolongation of the patent term by prohibiting claims in a second patent not patentably distinct from claims in a first patent.

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingPatentably Distinct DesignsDesign Double Patenting
StatutoryInformativeAlways
[mpep-1504-06-413189284c425e0228f830fe]
Requirement for Identifying Patentably Indistinct Designs
Note:
Determine if the designs are variations of the same inventive concept that lack patentable distinctness.

Determining if a double patenting rejection is appropriate involves answering the following inquiries: Is the same design being claimed twice? If the answer is yes, then a rejection under 35 U.S.C. 171 should be made on the grounds of “same invention” type or statutory double patenting. If not, are the designs directed to patentably indistinct variations of the same inventive concept? If the answer is yes, then a rejection based on the nonstatutory double patenting should be made.

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingStatutory Double PatentingDesign Double Patenting
StatutoryRecommendedAlways
[mpep-1504-06-7656491262e742dd1fd095be]
Rejection for Nonstatutory Double Patenting When Same Invention Is Claimed Twice
Note:
If the same invention is claimed in two patents, a rejection based on nonstatutory double patenting should be made.

Determining if a double patenting rejection is appropriate involves answering the following inquiries: Is the same design being claimed twice? If the answer is yes, then a rejection under 35 U.S.C. 171 should be made on the grounds of “same invention” type or statutory double patenting. If not, are the designs directed to patentably indistinct variations of the same inventive concept? If the answer is yes, then a rejection based on the nonstatutory double patenting should be made.

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingDesign Double PatentingStatutory Double Patenting
StatutoryInformativeAlways
[mpep-1504-06-f43a406e32e1e6c9826fbddd]
Same Design Cannot Be Patented Twice
Note:
A design cannot be patented twice if it is identical and has the same scope as a previously patented design.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingStatutory Double PatentingTerminal Disclaimer for Designs
StatutoryInformativeAlways
[mpep-1504-06-0f901b2420623b2636389719]
Design Statutory Double Patenting Rejection Prohibits Issuance of Identical Designs
Note:
This rule prohibits the issuance of a second design patent for an identical design already patented, based on statutory double patenting rejection.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingStatutory Double PatentingTerminal Disclaimer for Designs
StatutoryProhibitedAlways
[mpep-1504-06-ac4c5f137b40f85c95213d3c]
Same Invention Type Double Patenting Cannot Be Overcome by Terminal Disclaimer
Note:
A 'same invention' double patenting rejection, whether statutory or nonstatutory, cannot be resolved through a terminal disclaimer.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingStatutory Double PatentingTerminal Disclaimer for Designs
StatutoryInformativeAlways
[mpep-1504-06-ccd2360b7f5a5c09b65aad3f]
Same Invention Double Patenting Cannot Be Overcome by Terminal Disclaimer
Note:
A design utility 'same invention' double patenting rejection cannot be overcome using a terminal disclaimer.

A design – design statutory double patenting rejection based on 35 U.S.C. 171 prevents the issuance of a second patent for a design already patented. For this type of double patenting rejection to be proper, identical designs with identical scope must be twice claimed. See In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993). A design – utility “same invention” double patenting rejection is based on judicial doctrine as there is no statutory basis for this rejection because neither 35 U.S.C. 101 nor 35 U.S.C. 171 can be applied against both claims. See In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A “same invention” type double patenting rejection, whether statutory or nonstatutory, cannot be overcome by a terminal disclaimer. See In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971).

Jump to MPEP SourceNonstatutory (Obviousness-Type) Double PatentingStatutory Double PatentingTerminal Disclaimer for Designs
Topic

Differences Between Claimed Invention and Prior Art

4 rules
StatutoryRequiredAlways
[mpep-1504-06-3b7d42afeb0cb7905d2ca93b]
Examiner Must Compare Overall Design Appearance
Note:
The examiner must compare the overall appearance of the claimed design in an application with that in a conflicting application or patent to determine nonstatutory double patenting.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceDifferences Between Claimed Invention and Prior ArtLevel of Ordinary Skill in the ArtScope and Content of Prior Art
StatutoryRequiredAlways
[mpep-1504-06-9f9e5ad6c3380782865b5294]
Differences Must Be Insufficient to Patentably Distinguish Designs
Note:
To establish nonstatutory double patenting, the differences between two designs must be minor and not patentably distinguishable.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceDifferences Between Claimed Invention and Prior ArtEstablishing Prima Facie CaseGraham v. Deere Factors
StatutoryPermittedAlways
[mpep-1504-06-a603e0b683750bab1cb67808]
Differences Must Be Insufficient to Patentably Distinguish
Note:
The differences between the claimed design and prior art must be so minor or obvious that they do not warrant patentability.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceDifferences Between Claimed Invention and Prior ArtLevel of Ordinary Skill in the ArtGraham v. Deere Factors
StatutoryInformativeAlways
[mpep-1504-06-d5f6fdc98ca9e3eef54a0111]
Overall Appearance Must Be Compared for Nonstatutory Double Patenting
Note:
The examiner must compare the overall appearance of claimed designs in conflicting applications to determine if a nonstatutory double patenting rejection is appropriate.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceDifferences Between Claimed Invention and Prior ArtLevel of Ordinary Skill in the ArtScope and Content of Prior Art
Topic

Design Double Patenting

3 rules
StatutoryInformativeAlways
[mpep-1504-06-c1eb40c27d4f850531056e21]
Types of Double Patenting Rejections
Note:
Describes the two types of double patenting rejections: statutory and nonstatutory.

There are generally two types of double patenting rejections. One is the same invention type or “statutory” double patenting rejection based on 35 U.S.C. 171 which states in the singular that an inventor may obtain “a patent.” The second is the “nonstatutory” double patenting rejection based on a judicially created doctrine grounded in public policy and which is primarily intended to prevent prolongation of the patent term by prohibiting claims in a second patent not patentably distinct from claims in a first patent.

Jump to MPEP SourceDesign Double PatentingNonstatutory (Obviousness-Type) Double PatentingStatutory Double Patenting
StatutoryInformativeAlways
[mpep-1504-06-fed7e0c0e30a3f024f4e8f43]
Determine If Same Design Is Claimed Twice
Note:
Check if the same design is claimed in multiple patents to determine a double patenting rejection.

Determining if a double patenting rejection is appropriate involves answering the following inquiries: Is the same design being claimed twice? If the answer is yes, then a rejection under 35 U.S.C. 171 should be made on the grounds of “same invention” type or statutory double patenting. If not, are the designs directed to patentably indistinct variations of the same inventive concept? If the answer is yes, then a rejection based on the nonstatutory double patenting should be made.

Jump to MPEP SourceDesign Double PatentingNonstatutory (Obviousness-Type) Double PatentingStatutory Double Patenting
StatutoryInformativeAlways
[mpep-1504-06-45f5e7048c3ef0da0704dab8]
Claims Must Be Compared for Double Patenting Rejections
Note:
Examiners must compare claims to determine double patenting rejections, not relying solely on drawings in utility applications or patents.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceDesign Double PatentingDesign Claim FormStatutory Double Patenting
Topic

Design Claim Form

3 rules
StatutoryRequiredAlways
[mpep-1504-06-9e5ac6f5444999c7bdbc3a68]
Drawings Not Required for Utility Claims
Note:
Examiners must not rely on drawings to define utility claims, as no direct correlation exists between them and the claim.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceDesign Claim FormDesign Application RequirementsDesign Double Patenting
StatutoryInformativeAlways
[mpep-1504-06-746f753eb97674d6324258a5]
Utility Claims Must Define Design Without Drawings
Note:
Examiners must ensure utility claims can define the design without relying on drawings, as several patents can share identical drawings but have different claims.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceDesign Claim FormStatutory Double PatentingDesign Application Requirements
StatutoryRequiredAlways
[mpep-1504-06-bc9917f2002b245b3eb73c2f]
Examiner Must Recreate Design from Utility Claims
Note:
The examiner must be able to derive the design claimed in a utility application from its claims without relying on the drawings.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceDesign Claim FormStatutory Double PatentingDesign Application Requirements
Topic

Prior Art for Designs

3 rules
StatutoryInformativeAlways
[mpep-1504-06-7fa6fcc3be37c7de9e353f0c]
Provisional Double Patenting Rejection Converts to Double Patenting
Note:
When the first application, which is the basis for a provisional double patenting rejection, publishes as an application publication or issues as a patent, the rejection converts into a standard double patenting rejection.

A provisional double patenting rejection will be converted into a double patenting rejection when the first application, which is the basis for the rejection, publishes as an application publication or issues as a patent. If more than two applications conflict with each other and one is allowed, the remaining applications should be cross rejected against the others as well as the allowed application. For this type of rejection to be appropriate, there must be either at least one inventor in common, common applicant, or a common owner/assignee. If the claims in copending design applications or a design patent and design applications have a common assignee but different inventive entities, anticipation and/or obviousness rejections based on the other application or patent as prior art under 35 U.S.C. 102(a)(2) or pre-AIA 35 U.S.C. 102(e), (f) and (g), as applicable, must be considered in addition to the double patenting rejection. See MPEP § 804, § 2136, § 2137, § 2138, and § 2154.

Jump to MPEP SourcePrior Art for DesignsAssignee as Applicant SignatureApplicant and Assignee Filing Under AIA
StatutoryRecommendedAlways
[mpep-1504-06-061e1ee378ed1b80a94ed182]
Remaining Applications Must Be Cross-Rejected Against Allowed One
Note:
If one application is allowed among conflicting applications, the remaining ones must be rejected against both each other and the allowed application.

A provisional double patenting rejection will be converted into a double patenting rejection when the first application, which is the basis for the rejection, publishes as an application publication or issues as a patent. If more than two applications conflict with each other and one is allowed, the remaining applications should be cross rejected against the others as well as the allowed application. For this type of rejection to be appropriate, there must be either at least one inventor in common, common applicant, or a common owner/assignee. If the claims in copending design applications or a design patent and design applications have a common assignee but different inventive entities, anticipation and/or obviousness rejections based on the other application or patent as prior art under 35 U.S.C. 102(a)(2) or pre-AIA 35 U.S.C. 102(e), (f) and (g), as applicable, must be considered in addition to the double patenting rejection. See MPEP § 804, § 2136, § 2137, § 2138, and § 2154.

Jump to MPEP SourcePrior Art for DesignsAssignee as Applicant SignatureApplicant and Assignee Filing Under AIA
StatutoryRequiredAlways
[mpep-1504-06-b4be3dc7c705e089f21cb1db]
Anticipation and Obviousness for Design Patents with Common Assignees
Note:
When design applications have a common assignee but different inventors, consider anticipation and obviousness rejections from other applications or patents in addition to double patenting.

A provisional double patenting rejection will be converted into a double patenting rejection when the first application, which is the basis for the rejection, publishes as an application publication or issues as a patent. If more than two applications conflict with each other and one is allowed, the remaining applications should be cross rejected against the others as well as the allowed application. For this type of rejection to be appropriate, there must be either at least one inventor in common, common applicant, or a common owner/assignee. If the claims in copending design applications or a design patent and design applications have a common assignee but different inventive entities, anticipation and/or obviousness rejections based on the other application or patent as prior art under 35 U.S.C. 102(a)(2) or pre-AIA 35 U.S.C. 102(e), (f) and (g), as applicable, must be considered in addition to the double patenting rejection. See MPEP § 804, § 2136, § 2137, § 2138, and § 2154.

Jump to MPEP SourcePrior Art for DesignsAssignee as Applicant SignatureDesign Novelty
Topic

Assignee as Applicant Signature

2 rules
StatutoryInformativeAlways
[mpep-1504-06-063d652ba5faf922d815ce5e]
Claims Must Not Duplicate Between Related Patents
Note:
Patent claims must not be substantially similar between related applications or patents owned by the same entity.

Double patenting rejections are based on a comparison of the claims in a patent and an application or between two applications which have at least one common inventor, common applicant, and/or are commonly assigned/owned or non-commonly assigned/owned but subject to a joint research agreement as set forth in 35 U.S.C. 102(c) or in pre-AIA 35 U.S.C. 103(c)(2) and (3). Notably, 35 U.S.C. 171 specifically states that “a patent” may be obtained if certain conditions are met; this use of the singular makes it clear that only one patent may issue for a design and is the basis for the statutory double patenting rejections.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAJoint Research Agreements (MPEP 2156)
StatutoryRequiredAlways
[mpep-1504-06-d0b461f437277f86c255d133]
Double Patenting Rejection Requires Common Owner/Assignee
Note:
For a double patenting rejection to be appropriate, the applications must share at least one common owner or assignee.

A provisional double patenting rejection will be converted into a double patenting rejection when the first application, which is the basis for the rejection, publishes as an application publication or issues as a patent. If more than two applications conflict with each other and one is allowed, the remaining applications should be cross rejected against the others as well as the allowed application. For this type of rejection to be appropriate, there must be either at least one inventor in common, common applicant, or a common owner/assignee. If the claims in copending design applications or a design patent and design applications have a common assignee but different inventive entities, anticipation and/or obviousness rejections based on the other application or patent as prior art under 35 U.S.C. 102(a)(2) or pre-AIA 35 U.S.C. 102(e), (f) and (g), as applicable, must be considered in addition to the double patenting rejection. See MPEP § 804, § 2136, § 2137, § 2138, and § 2154.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAPrior Art for Designs
Topic

Design Application Requirements

1 rules
StatutoryProhibitedAlways
[mpep-1504-06-70718184e4bf21bebaee07ff]
Utility Drawings Not Basis for Design Double Patenting
Note:
Examiners cannot use utility application drawings to assess possible double patenting rejections against design applications.

Double patenting rejections are based on a comparison of claims. In double patenting rejections, the disclosure of the patent or application may be relied upon only to define the claim. While there is a direct correlation between the drawings in a design application and the claim, examiners must be aware that no such correlation is necessary in a utility application or patent. Several utility patents may issue with the identical drawing disclosure but with claims directed to different inventions. So any consideration of possible double patenting rejections between a utility application or patent with a design application cannot be based on the utility drawing disclosure alone. See Anchor Hocking Corp. v. Eyelet Specialty Co., 377 F. Supp. 98, 183 USPQ 87 (D. Del. 1974). The examiner must be able to recreate the design claimed from the utility claims without reliance on the drawings.

Jump to MPEP SourceDesign Application RequirementsDesign Double PatentingDesign Patent Practice
Topic

Establishing Prima Facie Case

1 rules
StatutoryRequiredAlways
[mpep-1504-06-efbdfea3d8eee832bc8d7a2b]
Claim Must Be Considered as a Whole for Nonstatutory Double Patenting
Note:
When determining nonstatutory double patenting, the entire claim design must be analyzed together rather than its individual elements.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceEstablishing Prima Facie CasePrima Facie Case of ObviousnessAnticipation/Novelty
Topic

Graham v. Deere Factors

1 rules
StatutoryRequiredAlways
[mpep-1504-06-92359b8fdbfa6fbb7954cc97]
Requirement for Comparing Overall Design Appearance
Note:
The examiner must compare the overall appearance of claimed designs in conflicting applications to determine if they are basically the same and distinguishable by de minimis differences.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceGraham v. Deere FactorsObviousness
Topic

Scope and Content of Prior Art

1 rules
StatutoryInformativeAlways
[mpep-1504-06-6f7e1cd0fc0e29bdbd129025]
Nonstatutory Double Patenting Not Prior Art But Same Principle
Note:
A conflicting application used for nonstatutory double patenting is not considered prior art but follows the same principle as other types of prior art.

In determining whether a nonstatutory double patenting rejection is appropriate, the examiner must compare the overall appearance of the claimed design in the application with the overall appearance of the claimed design in the conflicting application or patent. The claim in the patent or conflicting application must be considered as a whole, i.e., the elements of the claimed design of the reference are not considered individually as they may be when establishing a prima facie case of anticipation under 35 U.S.C. 102 or obviousness under 35 U.S.C. 103. See MPEP § 804, subsection II.B. (information on the analysis for nonstatutory double patenting rejections). For example, in an obviousness analysis, after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), have been made (as with a rejection under 35 U.S.C. 103, the examiner must then determine whether the results of the inquiries support a conclusion nonstatutory double patenting. To establish nonstatutory double patenting under an obviousness analysis: (A) the conflicting design claims must have overall appearances with basically the same design characteristics; and (B) the differences between the two designs must be insufficient to patentably distinguish one design from the other. Differences may be considered patentably insufficient when they are de minimis or obvious to a designer of ordinary skill in the art. While the conflicting application or patent (if less than a year older than the application) used to establish nonstatutory double patenting is not considered “prior art,” the principle involved is basically the same. See In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)(see concurring opinion of Judge Rich).

Jump to MPEP SourceScope and Content of Prior ArtEstablishing Prima Facie CaseDifferences Between Claimed Invention and Prior Art
Topic

Restriction Requirement (MPEP 802-803)

1 rules
StatutoryPermittedAlways
[mpep-1504-06-c7f418334d0aa1cd91cf55fa]
Double Patenting Rejection Only for Voluntary Applications
Note:
Examiners can reject double patenting only if the continuing application was filed voluntarily and not due to a restriction requirement under 35 U.S.C. 121.

If double patenting is raised between a patent and a continuing application, examiners are reminded that this ground of rejection can only be made when the filing of the continuing application is voluntary and not the direct, unmodified result of restriction requirement under 35 U.S.C. 121. See MPEP § 804.01.

Jump to MPEP SourceRestriction Requirement (MPEP 802-803)Restriction and Election Practice (MPEP Chapter 800)

Examiner Form Paragraphs

Examiner form paragraphs are standard language that you might see in an Office Action or communication from the USPTO. Examiners have latitude to change the form paragraphs, but you will often see this exact language.

¶ 15.23 ¶ 15.23 35 U.S.C. 171 Double Patenting Rejection (Design-Design)
¶ 15.24 ¶ 15.24 Nonstatutory Double Patenting Rejection (Single Reference)
¶ 15.67 ¶ 15.67 Rationale for 35 U.S.C. 103 Rejection (Single Reference)

It is well settled that it is unobviousness in the overall appearance of the claimed design, when compared with the prior art, rather than minute details or small variations in design as appears to be the case here, that constitutes the test of design patentability. See In re Frick , 275 F.2d 741, 125 USPQ 191 (CCPA 1960) and In re Lamb , 286 F.2d 610, 128 USPQ 539 (CCPA 1961).

¶ 15.25 ¶ 15.25 Nonstatutory Double Patenting Rejection (Multiple References)
¶ 15.68 ¶ 15.68 Rationale for 35 U.S.C. 103 Rejection (Multiple References)

This modification of the primary reference in light of the secondary reference is proper because the applied references are so related that the appearance of features shown in one would suggest the application of those features to the other. See In re Rosen , 673 F.2d 388, 213 USPQ 347 (CCPA 1982); In re Carter , 673 F.2d 1378, 213 USPQ 625 (CCPA 1982), and In re Glavas , 230 F.2d 447, 109 USPQ 50 (CCPA 1956). Further, it is noted that case law has held that a designer skilled in the art is charged with knowledge of the related art; therefore, the combination of old elements, herein, would have been well within the level of ordinary skill. See In re Antle , 444 F.2d 1168,170 USPQ 285 (CCPA 1971) and In re Nalbandian , 661 F.2d 1214, 211 USPQ 782 (CCPA 1981).

Citations

Primary topicCitation
Nonstatutory (Obviousness-Type) Double Patenting
Statutory Double Patenting
35 U.S.C. § 101
Differences Between Claimed Invention and Prior Art
Establishing Prima Facie Case
Graham v. Deere Factors
Scope and Content of Prior Art
35 U.S.C. § 102
Anticipation/Novelty35 U.S.C. § 102(a)(1)
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 102(a)(2)
Anticipation/Novelty35 U.S.C. § 102(b)
Assignee as Applicant Signature
Statutory Double Patenting
35 U.S.C. § 102(c)
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 102(e)
Anticipation/Novelty
Differences Between Claimed Invention and Prior Art
Establishing Prima Facie Case
Graham v. Deere Factors
Scope and Content of Prior Art
35 U.S.C. § 103
Assignee as Applicant Signature
Statutory Double Patenting
35 U.S.C. § 103(c)(2)
Restriction Requirement (MPEP 802-803)35 U.S.C. § 121
Assignee as Applicant Signature
Design Double Patenting
Nonstatutory (Obviousness-Type) Double Patenting
Statutory Double Patenting
35 U.S.C. § 171
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 2136
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 2137
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 2138
Assignee as Applicant Signature
Prior Art for Designs
35 U.S.C. § 2154
Anticipation/Novelty37 CFR § 1.321(b)
MPEP § 1490
MPEP § 1504.05
Anticipation/Novelty
Assignee as Applicant Signature
Differences Between Claimed Invention and Prior Art
Establishing Prima Facie Case
Graham v. Deere Factors
Prior Art for Designs
Scope and Content of Prior Art
MPEP § 804
Restriction Requirement (MPEP 802-803)MPEP § 804.01
Form Paragraph § 15.24.06
Form Paragraph § 15.67
Form Paragraph § 15.68
In re Dembiczak, 175 F.3d 994, 50 USPQ2d 1614 (Fed. Cir. 1999)
Nonstatutory (Obviousness-Type) Double Patenting
Statutory Double Patenting
In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993)
Anticipation/NoveltyIn re Schneller, 397 F.2d 350, 158 USPQ 210 (CCPA 1968)
Nonstatutory (Obviousness-Type) Double Patenting
Statutory Double Patenting
In re Swett, 451 F.2d 631, 172 USPQ 72 (CCPA 1971)
Nonstatutory (Obviousness-Type) Double Patenting
Statutory Double Patenting
In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969)
Differences Between Claimed Invention and Prior Art
Establishing Prima Facie Case
Graham v. Deere Factors
Scope and Content of Prior Art
In re Zickendraht, 319 F.2d 225, 138 USPQ 22 (CCPA 1963)
Differences Between Claimed Invention and Prior Art
Establishing Prima Facie Case
Graham v. Deere Factors
Scope and Content of Prior Art
after the factual inquiries mandated under Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966)

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