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Public trackerEvidence checked Jul 23, 2026 · Latest decision Jul 21, 2026Public incidents are risk signals, not usage-adjusted rates
Evidence-linked corpus record: this page is generated from the structured public record and has a publication-readiness score of 90/100. It passed the source, context, and standalone-summary checks used for public indexing; individual legal editorial review is not represented.
Yi-Sheng Fang, et al. v. Hechalou US LLC, et al.
C.D. California · Sep 12, 2025
CA / federalEditorial impact: mediumfake citationsfabricated quotesmisrepresented authoritycontract
Direct answer
What happened in this matter?
Fabricated: Case Law | Opposition cited cases that do not exist; Plaintiffs' supplemental declaration identified multiple non-existent cases attributed to AI generation. Outcome: Monetary sanction; Order to notify State Bar and compliance declaration.
- Why the court cared
- The record concerns whether authorities presented to the decision-maker existed and could be verified. The tracked outcome is Monetary sanction; Order to notify State Bar and compliance declaration; the linked source controls the precise reasoning.
- Why it matters now
- A sub-$3K fine with a State Bar notice is still a career hit — require second-chair verification on every AI-assisted brief.
Why this matter is tracked
Fabricated: Case Law | Opposition cited cases that do not exist; Plaintiffs' supplemental declaration identified multiple non-existent cases attributed to AI generation. Outcome: Monetary sanction; Order to notify State Bar and compliance declaration.
Operational lesson
A sub-$3K fine with a State Bar notice is still a career hit — require second-chair verification on every AI-assisted brief.
Record details
CaliforniaSingle-state evidence scope
CourtC.D. California
Jurisdictionfederal
Circuit9th Circuit
DateSep 12, 2025
UN
AI toolUnidentified
Party typeLawyer
OutcomeMonetary sanction; Order to notify State Bar and compliance declaration
Known amount$2,418
Professional sanctionNo
Attribution boundary
What the record establishes about AI use
not established
The current record does not establish a specific AI tool. Do not infer AI use beyond the source.
Procedural posture
Monetary sanction; Order to notify State Bar and compliance declaration
Correction behavior
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
7 citation, quotation, or authority issues are recorded in the source dataset.
- Fabricated: Case Law | Opposition cited cases that do not exist; Plaintiffs' supplemental declaration identified multiple non-existent cases attributed to AI generation.
- False Quotes: Case Law | Opposition included quotations that do not appear in the cited authorities; Notice of Errata flagged four such nonexistent quotations and Plaintiffs identified additional misquotes.
- Misrepresented: Case Law | Some cited cases exist but do not contain the quoted language or address the points asserted — the authorities were misrepresented and did not support the proffered propositions.
- Fabricated: Case Law | Citations to cases that do not exist (AI-generated, non-existent authorities identified by Plaintiffs).
- False Quotes: Case Law | Quotations attributed to existing cases that did not contain the quoted language (false quotations identified by Plaintiffs).
- Misrepresented: Case Law | Citations to existing cases that do not address the point argued (misrepresentation of precedent).
- Misrepresented: Case Law | Two instances where case citations were changed for the proffered proposition (mis-citation/misrepresentation).
Questions this record answers
- What happened in Yi-Sheng Fang, et al. v. Hechalou US LLC, et al.?
- Fabricated: Case Law | Opposition cited cases that do not exist; Plaintiffs' supplemental declaration identified multiple non-existent cases attributed to AI generation. Outcome: Monetary sanction; Order to notify State Bar and compliance declaration.
- Why does Yi-Sheng Fang, et al. v. Hechalou US LLC, et al. matter for legal AI risk?
- A sub-$3K fine with a State Bar notice is still a career hit — require second-chair verification on every AI-assisted brief.
- What does the public record establish about Yi-Sheng Fang, et al. v. Hechalou US LLC, 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 Yi-Sheng Fang, et al. v. Hechalou US LLC, 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.