MPEP § 608.01(g) — Detailed Description of Invention (Annotated Rules)

§608.01(g) Detailed Description of Invention

USPTO MPEP version: BlueIron's Update: 2026-01-17

This page consolidates and annotates all enforceable requirements under MPEP § 608.01(g), 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.

Detailed Description of Invention

This section addresses Detailed Description of Invention. Primary authority: 37 CFR 1.71, 37 CFR 1.84(p), and 37 CFR 1.75. Contains: 2 requirements, 1 permission, and 1 other statement.

Key Rules

Topic

Prior Art

4 rules
StatutoryInformativeAlways
[mpep-608-01-g-02adddf7ae1fc21fd53f0e08]
Detailed Description of Invention Required
Note:
The detailed description must enable any skilled person to make and use the invention without extensive experimentation.

A detailed description of the invention and drawings follows the general statement of invention and brief description of the drawings. This detailed description, required by 37 CFR 1.71, MPEP §§ 608.01, 2161, and 2162, must be in such particularity as to enable any person skilled in the pertinent art or science to make and use the invention without involving extensive experimentation and must clearly convey enough information about the invention to show that applicant invented the subject matter that is claimed. An applicant is ordinarily permitted to use his or her own terminology, as long as it can be understood. Necessary grammatical corrections, however, should be required by the examiner, but it must be remembered that an examination is not made for the purpose of securing grammatical perfection.

StatutoryRequiredAlways
[mpep-608-01-g-37db17df28c6cae4ca023390]
Detailed Description Must Enable Invention Without Extensive Experimentation
Note:
The detailed description must provide enough information for a skilled person to make and use the invention without extensive experimentation.

A detailed description of the invention and drawings follows the general statement of invention and brief description of the drawings. This detailed description, required by 37 CFR 1.71, MPEP §§ 608.01, 2161, and 2162, must be in such particularity as to enable any person skilled in the pertinent art or science to make and use the invention without involving extensive experimentation and must clearly convey enough information about the invention to show that applicant invented the subject matter that is claimed. An applicant is ordinarily permitted to use his or her own terminology, as long as it can be understood. Necessary grammatical corrections, however, should be required by the examiner, but it must be remembered that an examination is not made for the purpose of securing grammatical perfection.

StatutoryPermittedAlways
[mpep-608-01-g-5be94fc5f640b0992267ba90]
Applicant May Use Own Words as Long as Understandable
Note:
An applicant can use their own terminology in the detailed description as long as it is clear and understandable, but grammatical corrections may be required.

A detailed description of the invention and drawings follows the general statement of invention and brief description of the drawings. This detailed description, required by 37 CFR 1.71, MPEP §§ 608.01, 2161, and 2162, must be in such particularity as to enable any person skilled in the pertinent art or science to make and use the invention without involving extensive experimentation and must clearly convey enough information about the invention to show that applicant invented the subject matter that is claimed. An applicant is ordinarily permitted to use his or her own terminology, as long as it can be understood. Necessary grammatical corrections, however, should be required by the examiner, but it must be remembered that an examination is not made for the purpose of securing grammatical perfection.

StatutoryRequiredAlways
[mpep-608-01-g-ec65452f4514b69bf56d1966]
Necessary Grammatical Corrections Required
Note:
Examiners require necessary grammatical corrections but examinations are not conducted to achieve grammatical perfection.

A detailed description of the invention and drawings follows the general statement of invention and brief description of the drawings. This detailed description, required by 37 CFR 1.71, MPEP §§ 608.01, 2161, and 2162, must be in such particularity as to enable any person skilled in the pertinent art or science to make and use the invention without involving extensive experimentation and must clearly convey enough information about the invention to show that applicant invented the subject matter that is claimed. An applicant is ordinarily permitted to use his or her own terminology, as long as it can be understood. Necessary grammatical corrections, however, should be required by the examiner, but it must be remembered that an examination is not made for the purpose of securing grammatical perfection.

Topic

Patent Application Content

1 rules
StatutoryInformativeAlways
[mpep-608-01-g-3e7b555bf4bb27c73a287a50]
Specification Must Describe Invention Completely
Note:
The detailed description of the invention must fully cover all aspects to ensure completeness as per MPEP § 608.01(p).

For completeness of the specification, see MPEP § 608.01(p).

Jump to MPEP SourcePatent Application Content

Citations

Primary topicCitation
Prior Art37 CFR § 1.71
37 CFR § 1.75
37 CFR § 1.84(p)
37 CFR § 1302.01
37 CFR § 2111.01
37 CFR § 608.01(o)
Prior ArtMPEP § 608.01
MPEP § 608.01(i)
Patent Application ContentMPEP § 608.01(p)

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: 2026-01-17