MPEP § 1826 — The Abstract (Annotated Rules)

§1826 The Abstract

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

This page consolidates and annotates all enforceable requirements under MPEP § 1826, 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.

The Abstract

This section addresses The Abstract. Primary authority: 37 CFR 1.438 and 37 CFR 1.72(b). Contains: 5 requirements, 2 guidance statements, 2 permissions, and 5 other statements.

Key Rules

Topic

PCT Abstract Requirements

5 rules
StatutoryRequiredAlways
[mpep-1826-ccb44ee721f6341ea3075d5e]
Abstract Must Summarize Disclosure
Note:
The abstract must summarize the disclosure, claims, and drawings in a concise manner (50 to 150 words).

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)PCT Abstract RequirementsPCT Description RequirementsPublication Language
StatutoryInformativeAlways
[mpep-1826-bcbd9f169a9b249b7ec4a4c5]
Maximum of 150 Words for Abstract
Note:
The abstract must be no more than 150 words to comply with national practice and PCT requirements.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)PCT Abstract RequirementsNationals and ResidentsReceiving Office (RO/US)
StatutoryRecommendedAlways
[mpep-1826-9a937242de5f38f1c31d5584]
PCT Abstract Should Not Exceed A4 Sheet
Note:
The abstract for a PCT application should not exceed the volume of text that can fit on an A4 sheet, 1.5 spaced.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)PCT Abstract RequirementsPatent Cooperation TreatyArticle 19 Amendment Scope
StatutoryRequiredAlways
[mpep-1826-bb311f55b5d615192eba2603]
Abstract Must Serve as Scanning Tool for Art
Note:
The abstract must efficiently summarize the disclosure, claims, and drawings to serve as a searching tool for specific art.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)PCT Abstract RequirementsPatent Cooperation TreatyArticle 19 Amendment Scope
MPEP GuidanceRequiredAlways
[mpep-1826-818d23d340d51392b2afd4c3]
Abstract Must Summarize Disclosure and Indicate Technical Problem
Note:
The abstract must summarize the disclosure, indicating the technical field, problem solved by the invention, and its principal uses. It should also include a chemical formula that best characterizes the invention if applicable.
(a) The abstract shall consist of the following:
  • (i) a summary of the disclosure as contained in the description, the claims, and any drawings; the summary shall indicate the technical field to which the invention pertains and shall be drafted in a way which allows the clear understanding of the technical problem, the gist of the solution of that problem through the invention, and the principal use or uses of the invention;
  • (ii) where applicable, the chemical formula which, among all the formulae contained in the international application, best characterizes the invention.
Jump to MPEP SourcePCT Abstract RequirementsRequest Content and FormPCT Request Form
Topic

Article 19 Amendment Scope

3 rules
StatutoryRequiredAlways
[mpep-1826-e13b48262c96e60f89cd480e]
Abstract Must Summarize Disclosure and Claims
Note:
The abstract must include a summary of the description, claims, and drawings, and may also contain the most characteristic chemical formula.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)Article 19 Amendment ScopePCT Abstract RequirementsPCT Description Requirements
StatutoryRequiredAlways
[mpep-1826-7d082f2312620412cf037918]
Abstract Must Follow Claims on New Sheet
Note:
The abstract of the international application must begin on a new sheet following the claims, adhering to specific formatting and content requirements.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)Article 19 Amendment ScopePCT Abstract RequirementsPCT Article 19 Amendments
StatutoryPermittedAlways
[mpep-1826-a01759a2a85da76e845abf73]
Abstract Must Be Obtained from International Bureau
Note:
The abstract for a patent application must be obtained in English and French from the International Bureau as per the Guidelines.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)Article 19 Amendment ScopePublication LanguagePCT Article 19 Amendments
Topic

Patent Cooperation Treaty

3 rules
StatutoryPermittedAlways
[mpep-1826-261c6e6a7d5081fbcce0e5ff]
Guidelines for Abstracts Under PCT
Note:
The guidelines provide instructions on how to prepare abstracts for patent applications under the Patent Cooperation Treaty, including content and word count requirements.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)Patent Cooperation TreatyArticle 19 Amendment ScopePCT Abstract Requirements
StatutoryInformativeAlways
[mpep-1826-e1011c8a928d4c119ff48f4f]
Abstract Must Be Provided by Applicant or International Searching Authority
Note:
The abstract must be provided either by the applicant within a time limit or established by the International Searching Authority if not furnished.

Where the receiving Office finds that the abstract is missing, it invites the applicant to furnish it within a time limit fixed in the invitation. Where the receiving Office has not invited the applicant to furnish an abstract or the applicant fails to furnish an abstract within a time limit fixed in the invitation, the International Searching Authority establishes one. See PCT Rule 38. The same applies where the abstract does not comply with the requirements outlined in the preceding paragraphs. Where the abstract is established by the International Searching Authority, the applicant may propose modifications of, or comment on, the new abstract until the expiration of 1 month from the date of mailing of the international search report (PCT Rule 38.3).

Jump to MPEP Source · 37 CFR 1.438Patent Cooperation TreatyReceiving Office (RO/US)International Searching Authority (ISA)
StatutoryRecommendedAlways
[mpep-1826-1431286e9a86dfae435b46bd]
Abstract Must Accompany Patent Application
Note:
The abstract must be included with the patent application as part of the required documentation.
Should not contain:
  • (A) Superfluous language.
  • (B) Legal phraseology such as “said” and “means.”
  • (C) Statements of alleged merit or speculative application.
  • (D) Prohibited items as defined in PCT Rule 9.
Jump to MPEP Source · 37 CFR 1.438Patent Cooperation Treaty
Topic

Receiving Office (RO/US)

3 rules
StatutoryInformativeAlways
[mpep-1826-c420b87a1c12829e0f9fdd73]
Receiving Office Must Invite Applicant for Abstract
Note:
The receiving office must invite the applicant to provide an abstract within a fixed time limit if it is missing.

Where the receiving Office finds that the abstract is missing, it invites the applicant to furnish it within a time limit fixed in the invitation. Where the receiving Office has not invited the applicant to furnish an abstract or the applicant fails to furnish an abstract within a time limit fixed in the invitation, the International Searching Authority establishes one. See PCT Rule 38. The same applies where the abstract does not comply with the requirements outlined in the preceding paragraphs. Where the abstract is established by the International Searching Authority, the applicant may propose modifications of, or comment on, the new abstract until the expiration of 1 month from the date of mailing of the international search report (PCT Rule 38.3).

Jump to MPEP Source · 37 CFR 1.438Receiving Office (RO/US)PCT International Application FilingInternational Searching Authority (ISA)
StatutoryInformativeAlways
[mpep-1826-cb51b451219a37dc2ecb1a3b]
International Searching Authority Establishes Abstract If Not Provided
Note:
If the receiving Office does not invite an abstract or the applicant fails to provide one within a fixed time limit, the International Searching Authority must establish it.

Where the receiving Office finds that the abstract is missing, it invites the applicant to furnish it within a time limit fixed in the invitation. Where the receiving Office has not invited the applicant to furnish an abstract or the applicant fails to furnish an abstract within a time limit fixed in the invitation, the International Searching Authority establishes one. See PCT Rule 38. The same applies where the abstract does not comply with the requirements outlined in the preceding paragraphs. Where the abstract is established by the International Searching Authority, the applicant may propose modifications of, or comment on, the new abstract until the expiration of 1 month from the date of mailing of the international search report (PCT Rule 38.3).

Jump to MPEP Source · 37 CFR 1.438Receiving Office (RO/US)International Searching Authority (ISA)PCT International Application Filing
StatutoryInformativeAlways
[mpep-1826-ce0c43ce7073e93d054e3c24]
Abstract Must Comply with Requirements
Note:
The receiving office requires the abstract to meet specific requirements; if it does not, the International Searching Authority will establish one and allow modifications or comments within a month.

Where the receiving Office finds that the abstract is missing, it invites the applicant to furnish it within a time limit fixed in the invitation. Where the receiving Office has not invited the applicant to furnish an abstract or the applicant fails to furnish an abstract within a time limit fixed in the invitation, the International Searching Authority establishes one. See PCT Rule 38. The same applies where the abstract does not comply with the requirements outlined in the preceding paragraphs. Where the abstract is established by the International Searching Authority, the applicant may propose modifications of, or comment on, the new abstract until the expiration of 1 month from the date of mailing of the international search report (PCT Rule 38.3).

Jump to MPEP Source · 37 CFR 1.438Receiving Office (RO/US)International Searching Authority (ISA)International Search Report
Topic

Request Content and Form

1 rules
StatutoryRequiredAlways
[mpep-1826-65186977f6abfbe1c0d55cf6]
Abstract Must Adhere to PCT Rule 8
Note:
The abstract must comply with the requirements set forth in PCT Rule 8.

(a) Requirements as to the content and form of the abstract are set forth in PCT Rule 8, and shall be adhered to.

Jump to MPEP Source · 37 CFR 1.438Request Content and FormPCT Request FormPatent Cooperation Treaty
Topic

Publication Language

1 rules
StatutoryInformativeAlways
[mpep-1826-49477e0252cef2678e4adc19]
Abstract Must Be Concise Within PCT Limits
Note:
The abstract must be concise, preferably between 50 to 150 words in English, and not exceed the 150-word limit for publication.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)Publication LanguageInternational PublicationPatent Cooperation Treaty
Topic

PCT Description Requirements

1 rules
StatutoryRequiredAlways
[mpep-1826-5e81bd2341dce6f6b501bfa8]
Other Physical Requirements Must Match Description
Note:
The physical requirements of the application must align with those described in the specification.

The abstract must consist of a summary of the disclosure as contained in the description, the claims and any drawings. Where applicable, it must also contain the most characteristic chemical formula. The abstract must be as concise as the disclosure permits (preferably 50 to 150 words if it is in English or when translated into English). National practice (see MPEP § 608.01(b)) also provides a maximum of 150 words for the abstract. See 37 CFR 1.72(b). The PCT range of 50 – 150 words is not absolute but publication problems could result when the PCT limit is increased beyond the 150 word limit. Maintaining the PCT upper limit is encouraged. As a rule of thumb, it can be said that the volume of the text of the abstract, including one of the figures from the drawings (if any), should not exceed what can be accommodated on an A4 sheet of typewritten matter, 1 1/2 spaced. The abstract of the international application as filed must begin on a new sheet following the claims (Administrative Instructions Section 207). The other physical requirements must correspond to those for the description. The abstract must be so drafted that it can efficiently serve as a scanning tool for the purposes of searching in the particular art. These and other requirements concerning the abstract are spelled out in detail in PCT Rule 8. Useful guidance can be obtained from the “Guidelines for the Preparation of Abstracts Under the Patent Cooperation Treaty,” published in the PCT Gazette (No. 5/1978). Those Guidelines may be obtained, in English and French, from the International Bureau.

Jump to MPEP Source · 37 CFR 1.72(b)PCT Description RequirementsPCT Description and ClaimsArticle 19 Amendment Scope
Topic

International Searching Authority (ISA)

1 rules
StatutoryPermittedAlways
[mpep-1826-3ae607b3a92f4af22609255e]
Applicant Can Modify ISA-Generated Abstract
Note:
The applicant may propose changes to or comment on an abstract created by the International Searching Authority within one month of receiving the international search report.

Where the receiving Office finds that the abstract is missing, it invites the applicant to furnish it within a time limit fixed in the invitation. Where the receiving Office has not invited the applicant to furnish an abstract or the applicant fails to furnish an abstract within a time limit fixed in the invitation, the International Searching Authority establishes one. See PCT Rule 38. The same applies where the abstract does not comply with the requirements outlined in the preceding paragraphs. Where the abstract is established by the International Searching Authority, the applicant may propose modifications of, or comment on, the new abstract until the expiration of 1 month from the date of mailing of the international search report (PCT Rule 38.3).

Jump to MPEP Source · 37 CFR 1.438International Searching Authority (ISA)International Search ReportInternational Search
Topic

PCT Drawing Requirements

1 rules
MPEP GuidanceRequiredAlways
[mpep-1826-539a58437febbdda05af80ef]
Main Technical Features Must Have Reference Signs
Note:
Each main technical feature in the abstract and illustrated by a drawing must be followed by a reference sign in parentheses.

(d) Each main technical feature mentioned in the abstract and illustrated by a drawing in the international application shall be followed by a reference sign, placed between parentheses.

Jump to MPEP SourcePCT Drawing RequirementsSignature RequirementsPCT Drawings
Topic

PCT International Application Filing

1 rules
MPEP GuidanceRequiredAlways
[mpep-1826-c2f398f79a0b38d9d574be14]
Abstract Must Serve as Search Tool
Note:
The abstract should assist scientists, engineers, and researchers in determining if they need to consult the international application itself.

The abstract shall be so drafted that it can efficiently serve as a scanning tool for purposes of searching in the particular art, especially by assisting the scientist, engineer or researcher in formulating an opinion on whether there is a need for consulting the international application itself.

Jump to MPEP SourcePCT International Application FilingPatent Cooperation Treaty

Citations

Primary topicCitation
Article 19 Amendment Scope
PCT Abstract Requirements
PCT Description Requirements
Patent Cooperation Treaty
Publication Language
37 CFR § 1.72(b)
Article 19 Amendment Scope
PCT Abstract Requirements
PCT Description Requirements
Patent Cooperation Treaty
Publication Language
MPEP § 608.01(b)
International Searching Authority (ISA)
Patent Cooperation Treaty
Receiving Office (RO/US)
PCT Rule 38.3
Article 19 Amendment Scope
PCT Abstract Requirements
PCT Description Requirements
Patent Cooperation Treaty
Publication Language
Request Content and Form
PCT Rule 8
Patent Cooperation TreatyPCT Rule 9

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