What is the significance of corroborating evidence in Rule 131 affidavits?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-10 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. Corroborating evidence plays a crucial role in Rule 131 affidavits. The MPEP 715.07 states: “Each fact should be supported by documentary evidence, where possible, and explained by affidavit of the party having the best knowledge of the facts.” This means that while an inventor’s affidavit can be sufficient in some cases, additional evidence strengthens the claim. Corroborating evidence can include laboratory notebooks, prototype drawings, or witness statements that support the inventor’s assertions about the invention’s conception and reduction to practice. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Conception and Reduction to Practice Not Identical in Rule 131 MPEP 715.07 Required Alleged Reduction to Practice Required MPEP 715 Recommended Either Diligence or Reduction to Practice Must Be Established MPEP 715 Recommended Burden of Showing Reduction to Practice Is on Applicant MPEP 715.07 Explain Lack of Reduction to Practice Showing MPEP 715 Required Affidavit Must Establish Reduction to Practice Before Filing Date MPEP 715 Required Requirement for Reduction to Practice After Reference Date MPEP 715 Requirement for Prior Reduction to Practice MPEP 715 Explain Lack of Reduction to Practice Showing in Bracket 2 MPEP 715 Required Diligence Not Required After Reduction to Practice MPEP 715 Required Other Related FAQs 5 FAQs Collapse What types of documentary evidence are acceptable for Rule 131 affidavits? What types of evidence are acceptable for antedating a reference in patent applications? What types of evidence are acceptable for proving prior invention under 37 CFR 1.131? How should an inventor present facts in an affidavit or declaration under 37 CFR 1...