MPEP 400
Representative of Applicant or Owner
This is the Ninth Edition of the MPEP, Revision 10.2019, Last Revised in June 2020
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: Acting in a Representative Capacity
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