What is the proper use of judicial notice in federal court?
In federal court, judicial notice is proper only for facts that are not subject to reasonable dispute: facts generally known within the court’s territorial jurisdiction or facts capable of accurate and ready determination from sources whose accuracy cannot reasonably be questioned.[1][2] It is a narrow evidentiary tool for adjudicative facts, not a device for resolving disputed factual issues or proving contested inferences.[1][3]
Core Rule
Fed. R. Evid. 201 governs judicial notice of adjudicative facts only; it does not govern legislative facts.[1][2] A court may take judicial notice:
A court may take notice at any stage of the proceeding.[2][3] If a party timely requests it, the party is entitled to be heard on the propriety of taking notice and the nature of the fact to be noticed.[2][3]
What May Be Noticed
The fact must be one that is:
“not subject to reasonable dispute” because it either
(1) is generally known within the trial court’s territorial jurisdiction, or
(2) can be accurately and readily determined from sources whose accuracy cannot reasonably be questioned.[2][3]
Examples from the Ninth Circuit include:
- the FDIC status of a bank where undisputed.[1]
- the filing date of a published patent application, where the date was readily verifiable from a governmental source.[5]
The Ninth Circuit also recognizes that courts may notice some public records, but not the truth of disputed facts contained in those records.[5]
What Judicial Notice Is Not
Judicial notice is not a way to:
- resolve factual disputes,
- credit one party’s version of contested events,
- assume the truth of disputed statements in public records, or
- use extrinsic materials to short-circuit pleading standards.[4][5]
The Ninth Circuit in Khoja v. Orexigen Therapeutics, Inc., 899 F.3d 988 (9th Cir. 2018) emphasized that courts must distinguish between noticing the existence of a document or a verifiable fact and noticing the truth of disputed content within that document.[5] A document may be notice-worthy, but statements inside it may still be disputed and therefore improper for notice as substantive truth.[5]
Jury Instructions
If judicial notice is taken:
- Civil case: the court must instruct the jury to accept the noticed fact as conclusive.[2][3]
- Criminal case: the court must instruct the jury that it may or may not accept the noticed fact as conclusive.[2][3]
Practical Ninth Circuit Guidance
The Ninth Circuit’s pattern instruction summarizes the rule well:
A judicially noticed fact must be one not subject to reasonable dispute.[1]
And in United States v. Zepeda, 792 F.3d 1103 (9th Cir. 2015) (en banc), the court explained that some matters are treated as questions of law or legislative fact rather than Rule 201 adjudicative facts.[1]
Bottom Line
Proper judicial notice in federal court is limited to truly undisputed facts, typically verifiable from reliable sources, and it should not be used to decide contested facts or contested inferences.[1][2][5] Courts should identify exactly what fact is being noticed and ensure that the noticed proposition is genuinely indisputable.[5]