MPEP § 822 — Claims to Inventions That Are Not Patentably Distinct in Plural Applications of Same Applicant or Assignee (Annotated Rules)

§822 Claims to Inventions That Are Not Patentably Distinct in Plural Applications of Same Applicant or Assignee

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

This page consolidates and annotates all enforceable requirements under MPEP § 822, 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.

Claims to Inventions That Are Not Patentably Distinct in Plural Applications of Same Applicant or Assignee

This section addresses Claims to Inventions That Are Not Patentably Distinct in Plural Applications of Same Applicant or Assignee. Primary authority: 37 CFR 1.78. Contains: 4 guidance statements and 2 permissions.

Key Rules

Topic

Benefit Claim in Specification

11 rules
StatutoryRecommendedAlways
[mpep-822-731db719f7d26048d171df1a]
Complete Examination of Patentably Indistinct Claims in Same Application
Note:
All claims in the same application must be examined for patentability, including rejections based on prior art and provisional double patenting.

Where claims in two or more applications filed by the same applicant or assignee are patentably indistinct, a complete examination should be made of the claims of each application and all appropriate rejections should be entered in each application, including rejections based upon prior art. The claims of each application may also be rejected on the grounds of provisional double patenting based on the claims of the other application whether or not any claims avoid the prior art. Where appropriate, the same prior art may be relied upon in each of the applications. See also MPEP § 804.01.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryPermittedAlways
[mpep-822-1caa5afbe9bc6867b7d9a51a]
Claims May Be Rejected for Provisional Double Patenting Regardless of Prior Art Avoidance
Note:
The claims in each application may be rejected if they are patentably indistinct from the claims of another application, even if some claims do not avoid prior art.

Where claims in two or more applications filed by the same applicant or assignee are patentably indistinct, a complete examination should be made of the claims of each application and all appropriate rejections should be entered in each application, including rejections based upon prior art. The claims of each application may also be rejected on the grounds of provisional double patenting based on the claims of the other application whether or not any claims avoid the prior art. Where appropriate, the same prior art may be relied upon in each of the applications. See also MPEP § 804.01.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryPermittedAlways
[mpep-822-13aac8f50b079b6b910f99a7]
Same Prior Art May Be Used In Multiple Applications
Note:
Where claims in multiple applications by the same applicant are patentably indistinct, the same prior art can be relied upon in each application.

Where claims in two or more applications filed by the same applicant or assignee are patentably indistinct, a complete examination should be made of the claims of each application and all appropriate rejections should be entered in each application, including rejections based upon prior art. The claims of each application may also be rejected on the grounds of provisional double patenting based on the claims of the other application whether or not any claims avoid the prior art. Where appropriate, the same prior art may be relied upon in each of the applications. See also MPEP § 804.01.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryRecommendedAlways
[mpep-822-d99b90f697f1cd1164437242]
Provisional Double Patenting Must Continue in Multiple Applications
Note:
The examiner must continue to apply provisional double patenting rejections across multiple applications as long as there are overlapping claims, unless it is the sole remaining rejection in one application.

The provisional double patenting rejection should continue to be made by the examiner in each application as long as there are patentably indistinct claims in more than one application unless that provisional double patenting rejection is the only rejection remaining in one of the applications. See MPEP § 1490 when the provisional double patenting rejection is the only rejection remaining in at least one application.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryInformativeAlways
[mpep-822-3367e085a72c53f249cebd30]
Claims to Non-Distinct Inventions Prohibited in Same Application
Note:
This rule prohibits claiming inventions that are not patentably distinct in plural applications of the same applicant or assignee.

See MPEP § 804.03 for conflicting subject matter, different inventors, common ownership.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryInformativeAlways
[mpep-822-a9a94e79ef8d1277a792e3f5]
Rejection of One Claim Over Another in Same Application
Note:
This rule outlines the rejection process for claims that are not patentably distinct from other claims within the same application.

See MPEP § 608.01(m) for rejection of one claim over another in the same application.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryInformativeAlways
[mpep-822-60bdb7e1fc79d44dd036dbd7]
Claim Must Not Duplicate Earlier Application
Note:
The claim must not seek to patentably duplicate an invention already claimed in a prior application of the same applicant or assignee.

See MPEP § 2190, subsection II, for res judicata.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryInformativeAlways
[mpep-822-2a8a11eba8a11a6044de2fec]
Specification Must Describe Invention Completely for Continuation Benefit
Note:
The specification must provide a complete description of the invention to claim continuation benefit under 37 CFR 1.78.

See MPEP § 709.01 for one application in interference.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryInformativeAlways
[mpep-822-abbbc2c58dbba149b4e49c79]
Requirement for Species and Genus in Separate Applications
Note:
The rule requires that species and genus be claimed separately in different applications.

See MPEP § 806.04(h) to § 806.04(i) for species and genus in separate applications.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryRecommendedAlways
[mpep-822-db199fb5e74a6541de5b9ea8]
Conflicting Claims Must Be Merged in Single Application
Note:
When conflicting claims are made in multiple applications due to improper restrictions, they must be moved to a single application as required by the examiner.

Wherever appropriate, such conflicting claims should be moved to a single application. This is particularly true where the two or more applications are due to, and consonant with, a requirement to restrict which the examiner now considers to be improper.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryRecommendedAlways
[mpep-822-332d27849ae08da08ce9f362]
Claims Must Be Identical or Conceded Not Distinct
Note:
Form paragraph 8.29 requires claims to be identical or conceded by the applicant as not patentably distinct.

Form paragraph 8.29 should be used when the conflicting claims are identical or conceded by applicant not to be patentably distinct.

Jump to MPEP Source · 37 CFR 1.78Benefit Claim in SpecificationContinuation Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)

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.

¶ 8.29 ¶ 8.29 Patentably Indistinct Claims, Copending Applications

Claim [1] of this application is patentably indistinct from claim [2] of Application No. [3] . Pursuant to 37 CFR 1.78(f) , when two or more applications filed by the same applicant or assignee contain patentably indistinct claims, elimination of such claims from all but one application may be required in the absence of good and sufficient reason for their retention during pendency in more than one application. Applicant is required to either cancel the patentably indistinct claims from all but one application or maintain a clear line of demarcation between the applications. See MPEP § 822 .

Citations

Primary topicCitation
Benefit Claim in Specification37 CFR § 806.04(i)
Benefit Claim in SpecificationMPEP § 1490
Benefit Claim in SpecificationMPEP § 2190
Benefit Claim in SpecificationMPEP § 608.01(m)
Benefit Claim in SpecificationMPEP § 709.01
Benefit Claim in SpecificationMPEP § 804.01
Benefit Claim in SpecificationMPEP § 804.03
Benefit Claim in SpecificationMPEP § 806.04(h)
Benefit Claim in SpecificationForm Paragraph § 8.29

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