MPEP § 905.01(a) — CPC Titles (Annotated Rules)

§905.01(a) CPC Titles

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

This page consolidates and annotates all enforceable requirements under MPEP § 905.01(a), 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.

CPC Titles

This section addresses CPC Titles. Contains: 2 guidance statements.

Key Rules

Topic

Secrecy Orders

2 rules
MPEP GuidanceRecommendedAlways
[mpep-905-01-a-b30d9d7b7a9ec4e7bf6ddce3]
Multipart Title Describes Separate Information Entities
Note:
A multipart CPC title uses semicolons to describe two distinct and separate information entities, each considered a stand-alone thing for coverage purposes.
Titles in the CPC system are generally in the form of single part or multipart titles which are described below.
  • (A) Single part title — Defines or represents the subject matter of a single concept or information.
  • Example:
  • A47C 1/00 Chairs adapted for special purposes
  • (B) Multipart title (separated by semicolons) — A semicolon in a CPC title delineates coverage of two distinct and separate information entities that should be considered stand-alone things for purposes of coverage.
  • Example:
  • F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
  • The three semicolons in the above example inform us that the subclass covers four distinct and separate entities: 1) refrigerators, 2) cold rooms, 3) ice boxes, and 4) other types of cooling or freezing apparatus not covered by any other subclass, therefore it is a residual to all cooling and freezing apparatus not elsewhere classified in CPC.
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MPEP GuidanceRecommendedAlways
[mpep-905-01-a-1b9af521329d680182773ae9]
Subclass Covers Refrigerators, Cold Rooms, Ice Boxes, and Other Cooling Devices
Note:
This subclass includes refrigerators, cold rooms, ice boxes, and other cooling or freezing apparatus not covered by any other subclass.

Titles in the CPC system are generally in the form of single part or multipart titles which are described below. The three semicolons in the above example inform us that the subclass covers four distinct and separate entities: 1) refrigerators, 2) cold rooms, 3) ice boxes, and 4) other types of cooling or freezing apparatus not covered by any other subclass, therefore it is a residual to all cooling and freezing apparatus not elsewhere classified in CPC.

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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