Manual of Patent Examining Procedure (MPEP)
Chapter 2000: Duty of Disclosure

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

Chapter 2000: Duty of Disclosure

2000: [Reserved]

2000.01: Introduction

2001: Duty of Disclosure, Candor, and Good Faith

2001.01: Who Has Duty To Disclose

2001.02: [Reserved]

2001.03: To Whom Duty of Disclosure Is Owed

2001.04: Information Under 37 CFR 1.56(a)

2001.05: Materiality Under 37 CFR 1.56(b)

2001.06: Sources of Information

2001.06(a): Prior Art Cited in Related Foreign Applications

2001.06(b): Information Relating to or From Copending United States Patent Applications

2001.06(c): Information From Related Litigation

2001.06(d): Information Relating to Claims Copied From a Patent

2002: Disclosure — By Whom and How Made

2002.01: By Whom Made

2002.02: Must be in Writing

2003: Disclosure __ When Made

2003.01: Disclosure After Patent Is Granted

2004: Aids to Compliance With Duty of Disclosure

2005: Comparison to Requirement for Information

2006‑2009: [Reserved]

2010: Office Handling of Duty of Disclosure/Inequitable Conduct Issues

2011: [Reserved]

2012: Reissue Applications Involving Issues of Fraud, Inequitable Conduct, and/or Violation of Duty of Disclosure

2012.01: Collateral Estoppel

2013: Protests Involving Issues of Fraud, Inequitable Conduct, and/or Violation of Duty of Disclosure

2014: Duty of Disclosure in Reexamination Proceedings

2015: [Reserved]

2016: Fraud, Inequitable Conduct, or Violation of Duty of Disclosure Affects All Claims

2017‑2021: [Reserved]

2022: [Reserved]

2022.01‑2022.04: [Reserved]

2022.05: Determination of “Error Without Any Deceptive Intention”