Kevin Leiske et al. v. Robert Gregory Kidd et al.
Delaware Ch. · Jul 1, 2026
What happened in this matter?
The Delaware Court of Chancery issued an Order to Show Cause requiring counsel and their law firm to justify why they should not be sanctioned under Rule 11(c) and the court's inherent authority for submitting filings containing fabricated legal citations and mischaracterized precedents generated by an unverified GenAI tool.
- Why the court cared
- The court reasoned that Rule 11(b) imposes a nondelegable duty on attorneys to conduct a reasonable inquiry to ensure legal contentions are warranted by existing law. Submitting hallucinated citations constitutes a potential violation of this duty. The court further noted that counsel's failure to correct mischaracterized legal propositions even after being alerted to the errors, and the attempt to blame a paralegal, compounded the breach of the duty of candor. Under Rule 11(c)(1), the firm is held jointly responsible for violations absent exceptional circumstances.
- Why it matters now
- This case underscores that the duty of candor and Rule 11 verification requirements are nondelegable. It highlights judicial intolerance for 'hallucinated' legal authority and the expectation that law firms maintain robust internal policies and supervision for GenAI usage.
Why this matter is tracked
In Kevin Leiske et al. v. Robert Gregory Kidd et al., the Delaware Court of Chancery issued an Order to Show Cause against counsel and their law firm following the submission of an Answering Brief containing fictitious legal citations, fabricated quotations, and hallucinated legal propositions generated by an unidentified GenAI tool. Counsel admitted to failing to verify the accuracy of the citations, initially delegating the task to a paralegal. When alerted to the errors, counsel filed a corrected brief that removed quotation marks but retained the underlying mischaracterized legal arguments. The court emphasized that the duty of candor and the obligation to conduct a reasonable inquiry under Rule 11 are nondelegable, ordering the attorney and firm to explain why sanctions should not be imposed.
This case underscores that the duty of candor and Rule 11 verification requirements are nondelegable. It highlights judicial intolerance for 'hallucinated' legal authority and the expectation that law firms maintain robust internal policies and supervision for GenAI usage.
Record details
What the record establishes about AI use
Counsel admitted to using a generative artificial intelligence tool.
Order to Show Cause issued July 1, 2026, requiring affidavits from counsel and the law firm by July 15, 2026.
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
3 citation, quotation, or authority issues are recorded in the source dataset.
- Fabricated: Case Law | Answering Brief contained multiple non-existent (fictitious) legal citations generated by GenAI; defendants identified these as fabricated and the court treated them as not 'existing law.'
- False Quotes: Case Law | The brief included fabricated quotations and purported authority presented in quotation marks that were not accurate; corrected brief removed quotation marks but kept the misstatements.
- Misrepresented: Case Law | Plaintiffs relied on Perconti v. Thornton Oil Corp. for a principle the case does not support; the court identified this as a mischaracterization of the precedent.
Questions this record answers
- What happened in Kevin Leiske et al. v. Robert Gregory Kidd et al.?
- The Delaware Court of Chancery issued an Order to Show Cause requiring counsel and their law firm to justify why they should not be sanctioned under Rule 11(c) and the court's inherent authority for submitting filings containing fabricated legal citations and mischaracterized precedents generated by an unverified GenAI tool.
- Why does Kevin Leiske et al. v. Robert Gregory Kidd et al. matter for legal AI risk?
- This case underscores that the duty of candor and Rule 11 verification requirements are nondelegable. It highlights judicial intolerance for 'hallucinated' legal authority and the expectation that law firms maintain robust internal policies and supervision for GenAI usage.
- What does the public record establish about Kevin Leiske et al. v. Robert Gregory Kidd et al.?
- The record summarizes the outcome described in the linked public source. The recorded document is hosted in the upstream publisher archive. This page is not a substitute for the complete docket, subsequent history, or jurisdiction-specific advice.
- Which source supports this Kevin Leiske et al. v. Robert Gregory Kidd et al. summary?
- The recorded source is Damien Charlotin case archive. It is classified as publisher document archive; review the linked material and subsequent docket history before relying on this summary.
Related matters
Related by court, jurisdiction, tool, or classified failure pattern. Similarity does not imply the same facts or outcome.