MPEP § 806.04(h) — Species Must Be Patentably Distinct From Each Other (Annotated Rules)

§806.04(h) Species Must Be Patentably Distinct From Each Other

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

This page consolidates and annotates all enforceable requirements under MPEP § 806.04(h), 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.

Species Must Be Patentably Distinct From Each Other

This section addresses Species Must Be Patentably Distinct From Each Other. Primary authority: 35 U.S.C. 121, 37 CFR 1.141, and 37 CFR 804.02. Contains: 1 prohibition and 1 permission.

Key Rules

Topic

Distinct Inventions (MPEP 802.01)

1 rules
StatutoryPermittedAlways
[mpep-806-04-h-5033de7ccf4c8766049bed73]
Additional Species Claims Permitted When Generic Allowed
Note:
When generic claims are allowable, applicants may claim additional species in the same application as per 37 CFR 1.141.

Where generic claims are allowable, applicant may claim in the same application additional species as provided by 37 CFR 1.141. See MPEP § 806.04. Where an applicant files a divisional application claiming a species previously claimed but nonelected in the parent case pursuant to and consonant with a requirement to restrict, a double patenting rejection of the species claim(s) would be prohibited under 35 U.S.C. 121. See MPEP § 821.04(a) for rejoinder of species claims when a generic claim is allowable.

Jump to MPEP Source · 37 CFR 1.141Distinct Inventions (MPEP 802.01)Basis for Restriction (MPEP 802)Safe Harbor for Divisional
Topic

Safe Harbor for Divisional

1 rules
StatutoryProhibitedAlways
[mpep-806-04-h-c6403819fa7dfa091d021bf7]
Safe Harbor for Previously Nonelected Species in Divisional Applications
Note:
A double patenting rejection of a species claim previously claimed but nonelected in the parent case is prohibited when filed in a divisional application pursuant to a restriction requirement.

Where generic claims are allowable, applicant may claim in the same application additional species as provided by 37 CFR 1.141. See MPEP § 806.04. Where an applicant files a divisional application claiming a species previously claimed but nonelected in the parent case pursuant to and consonant with a requirement to restrict, a double patenting rejection of the species claim(s) would be prohibited under 35 U.S.C. 121. See MPEP § 821.04(a) for rejoinder of species claims when a generic claim is allowable.

Jump to MPEP Source · 37 CFR 1.141Safe Harbor for DivisionalDivisional Applications (MPEP 201.06)Restriction Requirement (MPEP 802-803)

Citations

Primary topicCitation
Distinct Inventions (MPEP 802.01)
Safe Harbor for Divisional
35 U.S.C. § 121
Distinct Inventions (MPEP 802.01)
Safe Harbor for Divisional
37 CFR § 1.141
37 CFR § 804.02
MPEP § 804.01
Distinct Inventions (MPEP 802.01)
Safe Harbor for Divisional
MPEP § 806.04
Distinct Inventions (MPEP 802.01)
Safe Harbor for Divisional
MPEP § 821.04(a)

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