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Public trackerEvidence checked Jul 23, 2026 · Latest decision Jul 21, 2026Public incidents are risk signals, not usage-adjusted rates
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Lexos Media IP, LLC v. Overstock.com, Inc.
D. Kansas · Feb 2, 2026
KS / federalEditorial impact: highfake citationsfabricated quotesmisrepresented authoritycontract
Direct answer
What happened in this matter?
False Quotes: Case Law | Court determined Lexos attributed language to Baldwin Graphic Systems that does not appear in that opinion (quotation fabricated). Outcome: Brief struck, monetary sanction, firm compliance. Order to show cause was here. Defendant later obtained summary judgment, in part because plaintiff failed to cite any legal authority (once the hallucinated material was stricken).
- Why the court cared
- False Quotes: Case Law | Court determined Lexos attributed language to Baldwin Graphic Systems that does not appear in that opinion (quotation fabricated). || False Quotes: Case Law | Court found an explanatory parenthetical quoted from AstraZeneca did not exist in that opinion (quotation fabricated). || Misrepresented: Case Law | Court found citation to AVM Techs. LLC v. Intel Corp. was incorrect (wrong reporter/reference) and that the cited authority does not support the proposition asserted. || False Quotes: Case Law | Court found Lexos misattributed a quotation to Rodriguez-Felix that actually appears in Daubert and noted Rodriguez-Felix does not contain the quoted language. || False Quotes: Case Law | Court found Lexos quoted Microsoft (i4i v. Microsoft) in support of a point about incomplete claim constructions, but the quoted language does not exist in that opinion. || False Quotes: Case Law | Court found Lexos attributed specific language and holdings to Cordis that do not appear in Cordis and noted the patents discussed did not contain the quoted language (misquotation/nonexistent quotation). || Misrepresented: Case Law | Court found several page-specific citations (e.g., Flexuspine, cited at 879 F.3d 1369, 1375) did not support the proposition asserted and the cited page lacked the discussed admissibility analysis (misrepresented authority). || Fabricated: Case Law | Court found a cited decision 'Hockett v. City of Topeka, No. 19-4037-DDC, 2020 WL 6796766, at *3' does not exist; quotation and parenthetical attributed to it are fabricated. || False Quotes: Case Law | Court found the quoted parenthetical attributed to Liquid Dynamics is not in the opinion (quotation fabricated).
- Why it matters now
- Ban ChatGPT for legal research; a struck brief plus $12K sanction plus firm-wide compliance order is the going rate.
Why this matter is tracked
False Quotes: Case Law | Court determined Lexos attributed language to Baldwin Graphic Systems that does not appear in that opinion (quotation fabricated). Outcome: Brief struck, monetary sanction, firm compliance. Order to show cause was here. Defendant later obtained summary judgment, in part because plaintiff failed to cite any legal authority (once the hallucinated material was stricken).
Operational lesson
Ban ChatGPT for legal research; a struck brief plus $12K sanction plus firm-wide compliance order is the going rate.
Record details
KansasSingle-state evidence scope
CourtD. Kansas
Jurisdictionfederal
Circuit10th Circuit
DateFeb 2, 2026
CH
AI toolChatGPT
Party typeLawyer
OutcomeBrief struck, monetary sanction, firm compliance
Known amount$12,000
Professional sanctionNo
Attribution boundary
What the record establishes about AI use
reported
ChatGPT is recorded in the source dataset; confirm the basis in the linked document.
Procedural posture
Brief struck, monetary sanction, firm compliance
Correction behavior
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
9 citation, quotation, or authority issues are recorded in the source dataset.
- False Quotes: Case Law | Court determined Lexos attributed language to Baldwin Graphic Systems that does not appear in that opinion (quotation fabricated).
- False Quotes: Case Law | Court found an explanatory parenthetical quoted from AstraZeneca did not exist in that opinion (quotation fabricated).
- Misrepresented: Case Law | Court found citation to AVM Techs. LLC v. Intel Corp. was incorrect (wrong reporter/reference) and that the cited authority does not support the proposition asserted.
- False Quotes: Case Law | Court found Lexos misattributed a quotation to Rodriguez-Felix that actually appears in Daubert and noted Rodriguez-Felix does not contain the quoted language.
- False Quotes: Case Law | Court found Lexos quoted Microsoft (i4i v. Microsoft) in support of a point about incomplete claim constructions, but the quoted language does not exist in that opinion.
- False Quotes: Case Law | Court found Lexos attributed specific language and holdings to Cordis that do not appear in Cordis and noted the patents discussed did not contain the quoted language (misquotation/nonexistent quotation).
- Misrepresented: Case Law | Court found several page-specific citations (e.g., Flexuspine, cited at 879 F.3d 1369, 1375) did not support the proposition asserted and the cited page lacked the discussed admissibility analysis (misrepresented authority).
- Fabricated: Case Law | Court found a cited decision 'Hockett v. City of Topeka, No. 19-4037-DDC, 2020 WL 6796766, at *3' does not exist; quotation and parenthetical attributed to it are fabricated.
Show 1 additional discrepancies
- False Quotes: Case Law | Court found the quoted parenthetical attributed to Liquid Dynamics is not in the opinion (quotation fabricated).
Questions this record answers
- What happened in Lexos Media IP, LLC v. Overstock.com, Inc.?
- False Quotes: Case Law | Court determined Lexos attributed language to Baldwin Graphic Systems that does not appear in that opinion (quotation fabricated). Outcome: Brief struck, monetary sanction, firm compliance. Order to show cause was here. Defendant later obtained summary judgment, in part because plaintiff failed to cite any legal authority (once the hallucinated material was stricken).
- Why does Lexos Media IP, LLC v. Overstock.com, Inc. matter for legal AI risk?
- Ban ChatGPT for legal research; a struck brief plus $12K sanction plus firm-wide compliance order is the going rate.
- What does the public record establish about Lexos Media IP, LLC v. Overstock.com, Inc.?
- Retained unchanged after audit: the existing summary is source-specific, non-placeholder, and supported by the recorded source link. Read the underlying source before relying on it for legal advice or a filing.
- Which source supports this Lexos Media IP, LLC v. Overstock.com, Inc. 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.