How can abandoned applications be accessed for prior art searches?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 10 Rules 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. Abandoned applications can be accessed for prior art searches through various means. The MPEP 901.02 states: “Abandoned applications are available on microfilm in the Patent Search Room.” Additionally, many abandoned applications are now available electronically through the USPTO’s public databases. Patent examiners and the public can access these applications to conduct thorough prior art searches. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Abandoned Application Publication as Prior Art MPEP 901.02 Permitted Subject Matter from Abandoned Applications Can Be Used as Prior Art MPEP 901.02 Permitted Publicly Available Information as Prior Art MPEP 901.02 Permitted File Contents of Abandoned Applications May Be Publicly Available MPEP 901.02 Permitted Disclosure from Abandoned Application Available as Reference MPEP 901.02 Common Subject Matter from Abandoned App MPEP 901.02 Common Subject Matter from Abandoned Applications MPEP 901.02 Requirement for Examiner's Action Under 1.104(a)(1) MPEP 901 Published Abstracts and Defensive Publications Are References MPEP 901.02 Use Pre-AIA 102(e) for Prior Art Date MPEP 1504.03 Other Related FAQs 5 FAQs Collapse What is the significance of abandoned applications in patent examination? Are all abandoned applications available as prior art references? Can an abandoned application be used as prior art? What are the exceptions to the 18-month publication rule for patent applications? How should foreign patents and foreign published applications be cited?