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Patent Law & USPTO Documents

Official U.S. patent laws, USPTO rules, and MPEP chapters from MPEP Ninth Edition, Revision 01.2024. These are versioned PDF reference documents — not live USPTO pages — so check the official USPTO source for the latest applicable guidance.

Front matter

0005-change-summary.pdf

Summary of changes introduced in this MPEP revision.

55 pagesPDF

Front matter

Title Page

Title page for the Ninth Edition of the Manual of Patent Examining Procedure.

2 pagesPDF

Front matter

Foreword

Foreword to the Manual of Patent Examining Procedure.

1 pagesPDF

Front matter

Introduction

Introduction to how the MPEP is organized and used during prosecution.

3 pagesPDF

Other chapters

Ch. 100

Chapter 100

Rules on secrecy, national security, foreign filing licenses, and access to application materials.

36 pagesPDF

Application practice

Ch. 200

Chapter 200

Application types, status, benefit claims, priority, and continuing application practice.

120 pagesPDF

Application practice

Ch. 300

Chapter 300

Ownership of patent applications and assignment of rights.

41 pagesPDF

Representation

Ch. 400

Chapter 400

Representation of applicants and owners before the USPTO, including practitioner requirements.

61 pagesPDF

Application practice

Ch. 500

Chapter 500

Receipt, handling, and timing of mail and papers filed with the USPTO.

138 pagesPDF

Application practice

Ch. 600

Chapter 600

Required parts, form, and content of patent applications and related papers.

240 pagesPDF

Examination

Ch. 700

Chapter 700

Examination of patent applications, including Office Actions, amendments, interviews, and replies.

312 pagesPDF

Restriction

Ch. 800

Chapter 800

Restriction practice, unity of invention, election requirements, and double patenting.

107 pagesPDF

Prior art & search

Ch. 900

Chapter 900

Prior art, search, classification, and routing of applications within the USPTO.

57 pagesPDF

Other chapters

Ch. 1000

Chapter 1000

Matters decided by various USPTO officials outside ordinary examination.

21 pagesPDF

Application practice

Ch. 1100

Chapter 1100

Statutory invention registration, pre-grant publication, and preissuance submissions.

58 pagesPDF

Appeal

Ch. 1200

Chapter 1200

Appeal procedures before the Patent Trial and Appeal Board.

77 pagesPDF

Application practice

Ch. 1300

Chapter 1300

Allowance, issue fee payment, and patent grant procedures.

34 pagesPDF

Other chapters

Ch. 1400

Chapter 1400

Correction of patents after grant, including certificates of correction.

176 pagesPDF

Specialized patents

Ch. 1500

Chapter 1500

Examination of design patent applications.

83 pagesPDF

Specialized patents

Ch. 1600

Chapter 1600

Examination of plant patent applications.

14 pagesPDF

Other chapters

Ch. 1700

Chapter 1700

Miscellaneous prosecution topics not covered in other MPEP chapters.

12 pagesPDF

PCT / international

Ch. 1800

Chapter 1800

Patent Cooperation Treaty practice before the USPTO as a receiving office.

199 pagesPDF

Other chapters

Ch. 1900

Chapter 1900

Protest procedures against pending applications.

12 pagesPDF

Duty of disclosure

Ch. 2000

Chapter 2000

Duty of disclosure, information disclosure statements, and material prior art obligations.

22 pagesPDF

Patentability

Ch. 2100

Chapter 2100

Patentability requirements, including eligibility, novelty, obviousness, and written description.

535 pagesPDF

Reexamination

Ch. 2200

Chapter 2200

Citation of prior art and ex parte reexamination of issued patents.

199 pagesPDF

Other chapters

Ch. 2300

Chapter 2300

Interference and derivation proceedings.

29 pagesPDF

Specialized patents

Ch. 2400

Chapter 2400

Biotechnology examination topics and specialized claiming practice.

118 pagesPDF

Patent terms

Ch. 2500

Chapter 2500

Maintenance fee requirements and payment windows for issued patents.

33 pagesPDF

Reexamination

Ch. 2600

Chapter 2600

Optional inter partes reexamination procedures.

14 pagesPDF

Patent terms

Ch. 2700

Chapter 2700

Patent term adjustments, extensions, and term calculation.

90 pagesPDF

Reexamination

Ch. 2800

Chapter 2800

Supplemental examination of issued patents.

65 pagesPDF

PCT / international

Ch. 2900

Chapter 2900

International design application practice before the USPTO.

55 pagesPDF

Appendices & index

Appendix I

MPEP Appendix I — reference materials included in the manual appendix series.

1 pagesPDF

Appendices & index

Appendix II

MPEP Appendix II — supplementary reference material for patent examination practice.

56 pagesPDF

Appendices & index

Appendix L

MPEP Appendix L — supplementary reference material for patent examination practice.

101 pagesPDF

Appendices & index

Appendix R

MPEP Appendix R — supplementary reference material for patent examination practice.

505 pagesPDF

Appendices & index

Appendix T

MPEP Appendix T — supplementary reference material for patent examination practice.

146 pagesPDF

Appendices & index

Appendix AI

MPEP Appendix AI — supplementary reference material for patent examination practice.

76 pagesPDF

Appendices & index

Appendix P

MPEP Appendix P — supplementary reference material for patent examination practice.

18 pagesPDF

Appendices & index

Subject Matter Index

Subject matter index for navigating topics across the MPEP.

106 pagesPDF

Appendices & index

Chapter FPC - Form Paragraphs Consolidated

Consolidated form paragraphs used in Office Actions and prosecution documents.

187 pagesPDF