MPEP § 2164.05(b) — Specification Must Be Enabling to Persons Skilled in the Art (Annotated Rules)

§2164.05(b) Specification Must Be Enabling to Persons Skilled in the Art

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

This page consolidates and annotates all enforceable requirements under MPEP § 2164.05(b), 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.

Specification Must Be Enabling to Persons Skilled in the Art

This section addresses Specification Must Be Enabling to Persons Skilled in the Art. Contains: 2 requirements and 5 other statements.

Key Rules

Topic

PTAB Jurisdiction

5 rules
MPEP GuidanceInformativeAlways
[mpep-2164-05-b-106da579a76126dd76d5bb57]
Specification Must Enable Invention Across Arts
Note:
The specification must enable those skilled in each relevant art to practice the invention's aspects specific to their specialty.

When an invention, in its different aspects, involves distinct arts, the specification is enabling if it enables those skilled in each art, to carry out the aspect proper to their specialty. “If two distinct technologies are relevant to an invention, then the disclosure will be adequate if a person of ordinary skill in each of the two technologies could practice the invention from the disclosures.” Technicon Instruments Corp. v. Alpkem Corp., 664 F. Supp. 1558, 1578, 2 USPQ2d 1729, 1742 (D. Ore. 1986), aff’d in part, vacated in part, rev’d in part, 837 F. 2d 1097 (Fed. Cir. 1987) (unpublished opinion), appeal after remand, 866 F. 2d 417, 9 USPQ 2d 1540 (Fed. Cir. 1989). In Ex parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973), the Board stated “appellants’ disclosure must be held sufficient if it would enable a person skilled in the electronic computer art, in cooperation with a person skilled in the fuel injection art, to make and use appellants’ invention.” 194 USPQ at 461.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2164-05-b-e78b44781c0747193870f4ee]
Disclosure Adequate for Two Technologies
Note:
A disclosure is adequate if it enables a person of ordinary skill in each of two distinct technologies to practice the invention.

When an invention, in its different aspects, involves distinct arts, the specification is enabling if it enables those skilled in each art, to carry out the aspect proper to their specialty. “If two distinct technologies are relevant to an invention, then the disclosure will be adequate if a person of ordinary skill in each of the two technologies could practice the invention from the disclosures.” Technicon Instruments Corp. v. Alpkem Corp., 664 F. Supp. 1558, 1578, 2 USPQ2d 1729, 1742 (D. Ore. 1986), aff’d in part, vacated in part, rev’d in part, 837 F. 2d 1097 (Fed. Cir. 1987) (unpublished opinion), appeal after remand, 866 F. 2d 417, 9 USPQ 2d 1540 (Fed. Cir. 1989). In Ex parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973), the Board stated “appellants’ disclosure must be held sufficient if it would enable a person skilled in the electronic computer art, in cooperation with a person skilled in the fuel injection art, to make and use appellants’ invention.” 194 USPQ at 461.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2164-05-b-b8e46772ff80cb870ac72de3]
Specification Must Enable Invention for Skilled Persons in Distinct Arts
Note:
The specification must enable those skilled in each distinct art involved in the invention to carry out the aspect of the invention relevant to their specialty.

When an invention, in its different aspects, involves distinct arts, the specification is enabling if it enables those skilled in each art, to carry out the aspect proper to their specialty. “If two distinct technologies are relevant to an invention, then the disclosure will be adequate if a person of ordinary skill in each of the two technologies could practice the invention from the disclosures.” Technicon Instruments Corp. v. Alpkem Corp., 664 F. Supp. 1558, 1578, 2 USPQ2d 1729, 1742 (D. Ore. 1986), aff’d in part, vacated in part, rev’d in part, 837 F. 2d 1097 (Fed. Cir. 1987) (unpublished opinion), appeal after remand, 866 F. 2d 417, 9 USPQ 2d 1540 (Fed. Cir. 1989). In Ex parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973), the Board stated “appellants’ disclosure must be held sufficient if it would enable a person skilled in the electronic computer art, in cooperation with a person skilled in the fuel injection art, to make and use appellants’ invention.” 194 USPQ at 461.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresEx Parte Appeals to PTAB
MPEP GuidanceRequiredAlways
[mpep-2164-05-b-27b8c3a65895cc6927af77b5]
Specification Must Enable Invention to Skilled Persons
Note:
The specification must enable a person skilled in the electronic computer art and a person skilled in the fuel injection art to make and use the invention.

When an invention, in its different aspects, involves distinct arts, the specification is enabling if it enables those skilled in each art, to carry out the aspect proper to their specialty. “If two distinct technologies are relevant to an invention, then the disclosure will be adequate if a person of ordinary skill in each of the two technologies could practice the invention from the disclosures.” Technicon Instruments Corp. v. Alpkem Corp., 664 F. Supp. 1558, 1578, 2 USPQ2d 1729, 1742 (D. Ore. 1986), aff’d in part, vacated in part, rev’d in part, 837 F. 2d 1097 (Fed. Cir. 1987) (unpublished opinion), appeal after remand, 866 F. 2d 417, 9 USPQ 2d 1540 (Fed. Cir. 1989). In Ex parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973), the Board stated “appellants’ disclosure must be held sufficient if it would enable a person skilled in the electronic computer art, in cooperation with a person skilled in the fuel injection art, to make and use appellants’ invention.” 194 USPQ at 461.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2164-05-b-d135093054013433ccac61c5]
Disclosure Must Enable Skilled Persons in Distinct Arts
Note:
The specification must enable those skilled in each relevant art to practice the invention, requiring cooperation between specialists from different technologies.

When an invention, in its different aspects, involves distinct arts, the specification is enabling if it enables those skilled in each art, to carry out the aspect proper to their specialty. “If two distinct technologies are relevant to an invention, then the disclosure will be adequate if a person of ordinary skill in each of the two technologies could practice the invention from the disclosures.” Technicon Instruments Corp. v. Alpkem Corp., 664 F. Supp. 1558, 1578, 2 USPQ2d 1729, 1742 (D. Ore. 1986), aff’d in part, vacated in part, rev’d in part, 837 F. 2d 1097 (Fed. Cir. 1987) (unpublished opinion), appeal after remand, 866 F. 2d 417, 9 USPQ 2d 1540 (Fed. Cir. 1989). In Ex parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973), the Board stated “appellants’ disclosure must be held sufficient if it would enable a person skilled in the electronic computer art, in cooperation with a person skilled in the fuel injection art, to make and use appellants’ invention.” 194 USPQ at 461.

Jump to MPEP SourcePTAB JurisdictionPTAB Contested Case ProceduresEx Parte Appeals to PTAB
Topic

Patent Application Content

1 rules
MPEP GuidanceInformativeAlways
[mpep-2164-05-b-ed3d30182d8a44bfe045d78c]
Specification Must Enable Each Art Specialty
Note:
The specification must enable persons skilled in each relevant art to carry out the invention's aspects applicable to their specialty.

Where different arts are involved in the invention, the specification is enabling if it enables persons skilled in each art to carry out the aspect of the invention applicable to their specialty. In re Naquin, 398 F.2d 863, 866, 158 USPQ 317, 319 (CCPA 1968). See Pac. Biosciences of Cal., Inc. v. Oxford Nanopore Techs., Inc., 996 F.3d 1342, 1352, 2021 USPQ2d 519 (Fed. Cir. 2021) (The court found that undue experimentation was required to enable the full scope of the claims where there was ample evidence that relevant artisans would not know how to perform the claimed invention for more than a narrow range of the claimed scope of invention).
Where different arts are involved in the invention, the specification is enabling if it enables persons skilled in each art to carry out the aspect of the invention applicable to their specialty In re Naquin, 398 F.2d 863, 866, 158 USPQ 317, 319 (CCPA 1968).

Jump to MPEP SourcePatent Application ContentScope Commensurate with DisclosureUndue Experimentation
Topic

Scope Commensurate with Disclosure

1 rules
MPEP GuidanceRequiredAlways
[mpep-2164-05-b-afb08a4c2df69908b56457c7]
Claims Must Be Enabled for Full Scope
Note:
The specification must enable persons skilled in the relevant art to implement all aspects of the claimed invention, requiring no more than routine experimentation.

Where different arts are involved in the invention, the specification is enabling if it enables persons skilled in each art to carry out the aspect of the invention applicable to their specialty. In re Naquin, 398 F.2d 863, 866, 158 USPQ 317, 319 (CCPA 1968). See Pac. Biosciences of Cal., Inc. v. Oxford Nanopore Techs., Inc., 996 F.3d 1342, 1352, 2021 USPQ2d 519 (Fed. Cir. 2021) (The court found that undue experimentation was required to enable the full scope of the claims where there was ample evidence that relevant artisans would not know how to perform the claimed invention for more than a narrow range of the claimed scope of invention).

Jump to MPEP SourceScope Commensurate with DisclosureUndue ExperimentationEnablement Support for Claims

Citations

Primary topicCitation
PTAB JurisdictionEx parte Zechnall, 194 USPQ 461 (Bd. Pat. App. & Int. 1973)
Patent Application Content
Scope Commensurate with Disclosure
In re Naquin, 398 F.2d 863, 866, 158 USPQ 317, 319 (CCPA 1968)

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