Also known as:know or should have known · knew or should know · constructive knowledge · actual or constructive knowledge
Written by attorneys · grounded in primary & secondary sources — see below
A standard of knowledge that encompasses both actual awareness of a fact and what a reasonable person would have discovered through ordinary diligence under the circumstances.
Sources & Authorities· 6 primary sources
Select any source to read its text and confirm it supports the definition.
Cases
Statutes
Federal Rules
Hornbooks
How it applies
Common Examples
6
Amended Complaint Adds New Defendant
Khalil Kabir sued a company he believed was his former employer for unpaid wages. After the statute of limitations ran, he discovered the correct corporate entity was Koru Technologies and sought to amend the complaint. Koru Technologies received the original complaint within the Rule 4(m) period and knew or should have known the suit targeted it but for the misnomer.
Landowner's Notice of Government Claim
Kelsey Kirk purchased property from a seller who had previously conveyed an overlapping parcel to the United States. Kirk later sued to quiet title. The court held the action was time-barred because Kirk knew or should have known of the United States claim more than twelve years earlier through public records and surrounding circumstances.
State v. Miller783 S.E.2d 512 (N.C. Ct. App. 2016)
Violation of Military Exclusion Order
Kenneth King remained in a designated military zone after the government issued an exclusion order. Prosecutors charged him with a misdemeanor. The court found King knew or should have known of the order's existence and scope because it had been widely publicized and posted in the area.
Korematsu v. United States323 U.S. 214 (1944)
Publisher's Reckless Disregard Inquiry
Kira Kapoor, a private citizen, sued Kaleidoscope Media for defamation after an article falsely accused him of professional misconduct. The publisher had received prior complaints about the author's accuracy. Evidence showed the publisher knew or should have known further investigation was required before publication.
Gertz v. Robert Welch, Inc.418 U.S. 323, 94 S. Ct. 2997, 41 L. Ed. 2d 789 (1974)
Employer Liability for Harassment
Kamala Krishnan complained to Kaiser Dynamics supervisors about repeated offensive conduct by a coworker. The company took no action. The court held the employer knew or should have known of the hostile environment and failed to take reasonable corrective steps.
Meritor Savings Bank, FSB v. Vinson477 U.S. 57, 64 (1986)
Knowledge in Conspiracy Prosecution
Karina Kovacs participated in a scheme to distribute controlled substances. She argued she lacked knowledge that her actions violated federal law. The court instructed the jury that liability attached if she knew or should have known the conduct was unlawful under the circumstances presented.
United States v. Feola420 U.S. 671 (1974)
Common questions
Frequently Asked
2
Does the plaintiff's own diligence affect whether a new defendant knew or should have known of the mistake under Rule 15(c)?+
No. The inquiry focuses solely on what the party to be added knew or should have known within the Rule 4(m) period. The plaintiff's knowledge or lack of diligence is irrelevant to the relation-back analysis.
How does constructive knowledge differ from actual knowledge in the knew-or-should-have-known standard?+
Actual knowledge means direct awareness of the relevant fact. Constructive knowledge imputes awareness when a reasonable person in the same position would have discovered the fact through ordinary diligence or available records.
418 U.S. 323, 94 S. Ct. 2997, 41 L. Ed. 2d 789 (1974)Torts
…true or not. New York Times [Co.] v. Sullivan , [376 U. S. 254,] 279-280 [(1964)]." Mem. Op., Sept. 16, 1970. Thus, petitioner knew or should have known that the outcome of the trial might hinge on his ability to show by clear and convincing evidence that respondent acted with reckless disregard for the truth. And this question remained…