Skip to content

Courts on AI / Fabricated or misquoted citations

Williamson v. Meyers (derivatively on behalf of Equinix, Inc.)

United States District Court for the District of Delaware · Federal district courts · DE · · No. Civil Action No. 25-989-GBW · memorandum opinion

On 2026-05-27, in Williamson v. Meyers (derivatively on behalf of Equinix, Inc.), the District of Delaware warned counsel after plaintiff conceded a fictitious citation and withdrew it from the briefing. Counsel filed a motion using at least one nonexistent or hallucinated authority.

Disposition
The court warned counsel after plaintiff conceded a fictitious citation and withdrew it from the briefing.
Recorded conduct
Counsel filed a motion using at least one nonexistent or hallucinated authority. — outcome: warning; actor: lawyer
Canonical record
Incident tracker entry — verified outcome, regulator disposition and related rules

What the court wrote

Verbatim from the court's document (public domain). Ellipses mark omitted text; nothing is paraphrased.

CONCLUSION10 10 In reviewing Plaintiffs briefing, the Court identified at least one existence where Plaintiffhad cited to a non-existent authority and brought this issue to Plaintiffs attention. After investigating, Plaintiffconceded that this fictitious citation was most likely the result of artificial intelligence (“Al”). The Court has not considered any ofPlaintiffs contentions, to the extent that they rely on fabricated authority, and will consider whether any other action is necessary. For the foregoing reasons, Defendants’ Motion (D.I. 26) is granted. Count I is dismissed with prejudice and Counts II-IV are dismissed without prejudice. IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE DEAN WILLIAMSON, derivatively on behalf of EQUINIX, INC., Plaintiff, Civil Action No. 25-989-GBW V. CHARLES J. MEYERS, ADA1RE FOX­ MARTIN, NANCI CALDWELL, GARY HROMADKO, THOMAS OLINGER, CHRISTOPHER PAISLEY, SANDRA RIVERA, FIDELMA RUSSO, PETER VAN CAMP, JEETU PATEL, THOMAS A. BARTLETT, KEITH D. TAYLOR, SCOTT G. KRIENS, WILLIAM K. LUBY, and IRVING LYONS, III, Defendants, -and- EQUINIX, INC., Nominal Defendant. ORDER At Wilmington this 27th day of May 2026, IT IS HEREBY ORDERED that: 1.

compiled by the Cognesio LLP editorial teammethodas of 2026-09-07v0.1.1coding CC BY 4.0JSON Hugging Face GitHub