Manual of Patent Examining Procedure (MPEP)
Chapter 400: Representative of Applicant or Owner

Ninth Edition of the MPEP, Revision 07.2015, Last Revised in November 2015

Chapter 400: Representative of Applicant or Owner

401: U.S. Patent and Trademark Office Cannot Aid in Selection of Patent Practitioner

402: Power of Attorney; Naming Representative

402.01: Limited Recognition in Patent Matters

402.02: Appointment of Power of Attorney

402.02(a): Appointment in Application Filed On or After September 16, 2012

402.02(b): Appointment in Application Filed Before September 16, 2012

402.03: Signature Requirements for Papers Filed in an Application

402.04: [Reserved]

402.05: Revocation of Power of Attorney

402.05(a): Applicant Revocation - Application Filed On or After September 16, 2012

402.05(b): Applicant Revocation - Application Filed Before September 16, 2012

402.06: Attorney or Agent Withdraws

402.07: Assignee Revocation of Power of Attorney of Applicant and Appointment of New Power of Attorney

402.08: Application in Interference or Derivation Proceeding

402.09: International Application

402.10: Appointment/Revocation by Less Than All Applicants or Owners

403: Correspondence — With Whom Held; Customer Number Practice

403.01: [Reserved]

403.01(a): Correspondence in Applications Filed On or After September 16, 2012

403.01(b) -Correspondence in Applications Filed Before September 16, 2012
403.02: Two Patent Practitioners for Same Application

404: [Reserved]

405: Interviews With Patent Practitioner Not of Record

406: Death of Patent Practitioner

407: Suspended or Excluded Patent Practitioner

408: Interviews With Patent Practitioner of Record

409: Death, Legal Incapacity, or Unavailability of Inventor

409.01: [Reserved]

409.01(a): Deceased or Legally Incapacitated Inventor - Application Filed on or After September 16, 2012

409.01(b): Deceased or Legally Incapacitated Inventor- Application Filed Before September 16, 2012

409.02: Unavailable Joint Inventor – Application Filed on or after September 16, 2012

409.03: Unavailability of Inventor - Application Filed Before September 16, 2012

409.03(a): At Least One Joint Inventor Available

409.03(b): No Inventor Available

409.03(c): Unavailable Legal Representative of Deceased Inventor

409.03(d): Proof of Unavailability or Refusal

409.03(e): Statement of Last Known Address

409.03(f): Proof of Proprietary Interest

409.03(g): Proof of Irreparable Damage

409.03(h): Processing and Acceptance of a Pre-AIA 37 CFR 1.47 Application

409.03(i): Rights of the Nonsigning Inventor

409.03(j): Action Following Acceptance of a Pre-AIA 37 CFR 1.47 Application

409.04: [Reserved]

409.05: Application For Patent by an Assignee, Obligated Assignee, or a Person Who Otherwise Shows Sufficient Proprietary Interest – Application Filed On or After September 16, 2012

410: Representations to the U.S. Patent and Trademark Office