MPEP § 904.01(c) — Analogous Arts (Annotated Rules)

§904.01(c) Analogous Arts

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

This page consolidates and annotates all enforceable requirements under MPEP § 904.01(c), 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.

Analogous Arts

This section addresses Analogous Arts. Primary authority: 35 U.S.C. 103 and 35 U.S.C. 102. Contains: 1 requirement and 2 permissions.

Key Rules

Topic

Nonanalogous Art in Anticipation

2 rules
StatutoryPermittedAlways
[mpep-904-01-c-362da57bd4e26627696885fb]
Mixing Machines Considered Analogous
Note:
Tea mixers and concrete mixers are considered analogous arts due to their common mixing function.

For example, for search purposes, a tea mixer and a concrete mixer may both be regarded as relating to the mixing art, this being the necessary function of each. Similarly a brick-cutting machine and a biscuit cutting machine may be considered as having the same necessary function. See MPEP § 2141.01(a) for a discussion of analogous and nonanalogous art in the context of establishing a prima facie case of obviousness under 35 U.S.C. 103. See MPEP § 2131.05 for a discussion of analogous and nonanalogous art in the context of 35 U.S.C. 102.

Jump to MPEP SourceNonanalogous Art in AnticipationEstablishing Prima Facie CaseNonanalogous or Disparaging Prior Art (MPEP 2131.05)
StatutoryPermittedAlways
[mpep-904-01-c-4204ccea9479db96612cf994]
Brick-Cutting and Biscuit Cutting Machines Are Analogous
Note:
MPEP § 2141.01(a) discusses how brick-cutting machines and biscuit cutting machines can be considered analogous art for establishing a prima facie case of obviousness under 35 U.S.C. 103.

For example, for search purposes, a tea mixer and a concrete mixer may both be regarded as relating to the mixing art, this being the necessary function of each. Similarly a brick-cutting machine and a biscuit cutting machine may be considered as having the same necessary function. See MPEP § 2141.01(a) for a discussion of analogous and nonanalogous art in the context of establishing a prima facie case of obviousness under 35 U.S.C. 103. See MPEP § 2131.05 for a discussion of analogous and nonanalogous art in the context of 35 U.S.C. 102.

Jump to MPEP SourceNonanalogous Art in AnticipationEstablishing Prima Facie CaseNonanalogous or Disparaging Prior Art (MPEP 2131.05)
Topic

Secrecy Orders

1 rules
MPEP GuidanceRequiredAlways
[mpep-904-01-c-b888fcc7caf27e52cef75748]
All Analogous Arts Must Be Searched Regardless of Classification
Note:
The rule requires that all analogous arts be searched during patent examination, even if the invention is not classified in those arts.

Not only must the art be searched within which the invention claimed is classifiable, but also all analogous arts must be searched regardless of where the claimed invention is classified.

Jump to MPEP SourceSecrecy Orders

Citations

Primary topicCitation
Nonanalogous Art in Anticipation35 U.S.C. § 102
Nonanalogous Art in Anticipation35 U.S.C. § 103
Nonanalogous Art in AnticipationMPEP § 2131.05
Nonanalogous Art in AnticipationMPEP § 2141.01(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