Ariel Mendones, et al. v. Cushman and Wakefield et al
SC California · Sep 9, 2025
What happened in this matter?
The court imposed a terminating sanction, striking the plaintiffs' second amended complaint and dismissing the entire action with prejudice. This decision was based on the court's finding that the plaintiffs intentionally submitted fabricated evidence, including AI-generated deepfake videos and altered photographs, in violation of California Code of Civil Procedure § 128.7(b).
- Why the court cared
- The court reasoned that a terminating sanction was proportional to the harm caused by the plaintiffs' egregious misuse of the court's processes. It determined that lesser sanctions, such as evidentiary or issue sanctions, would be insufficient to deter future misconduct or address the burden placed on the court to verify the authenticity of evidence. The court emphasized that the use of deepfakes significantly undermines the administration of justice and erodes public confidence in the judicial system, necessitating a severe deterrent to signal that the court has zero tolerance for such conduct.
- Why it matters now
- This case illustrates the severe consequences for litigants who introduce AI-generated deepfakes and fabricated evidence into court proceedings. It highlights the judiciary's increasing scrutiny of evidentiary authenticity and the willingness to impose terminating sanctions to protect the integrity of the judicial process.
Why this matter is tracked
Fabricated: Exhibits & Submissions | Exhibits 6A and 6C are deepfake videos purporting to capture the speech and image of Geri Haas; court found them GenAI-created and not the same person as Ex. 36. Outcome: Terminating sanction: second amended complaint struck; entire action dismissed with prejudice.. The court found multiple exhibits (videos, photographs, messaging screenshots, and metadata) to be fabricated or materially altered using generative AI. The court deemed Plaintiffs' explanations not credible, declined criminal referral, declined monetary sanctions, and imposed a terminating sanction under Cal. Civ. Proc. Code § 128.7(b).
This case illustrates the severe consequences for litigants who introduce AI-generated deepfakes and fabricated evidence into court proceedings. It highlights the judiciary's increasing scrutiny of evidentiary authenticity and the willingness to impose terminating sanctions to protect the integrity of the judicial process.
Record details
What the record establishes about AI use
The court identified the exhibits as products of generative AI but did not name a specific tool.
The court issued a terminating sanction following an order to show cause hearing held on September 9, 2025, after the plaintiffs failed to appear to contest the tentative ruling.
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
5 citation, quotation, or authority issues are recorded in the source dataset.
- Fabricated: Exhibits & Submissions | Exhibits 6A and 6C are deepfake videos purporting to capture the speech and image of Geri Haas; court found them GenAI-created and not the same person as Ex. 36.
- Fabricated: Exhibits & Submissions | Exhibit 7 is a materially altered photograph (subject stitched into Ring camera image; background/foreground mismatch noted).
- Fabricated: Exhibits & Submissions | Exhibits 35 and 40 are messaging screenshots that appear AI-generated or materially altered; platform identification and fonts inconsistent between the two.
- Fabricated: Exhibits & Submissions | Metadata submitted with multiple exhibits contained atypical or added fields (e.g., copyright notices, URLs in musical genre), which the court found unreliable and possibly fabricated.
- Fabricated: Exhibits & Submissions | Other testimonial exhibits (Exs. 3, 6B, 21, 27) were found suspicious as to authenticity and reliability of supporting metadata and declarations.
Questions this record answers
- What happened in Ariel Mendones, et al. v. Cushman and Wakefield et al?
- The court imposed a terminating sanction, striking the plaintiffs' second amended complaint and dismissing the entire action with prejudice. This decision was based on the court's finding that the plaintiffs intentionally submitted fabricated evidence, including AI-generated deepfake videos and altered photographs, in violation of California Code of Civil Procedure § 128.7(b).
- Why does Ariel Mendones, et al. v. Cushman and Wakefield et al matter for legal AI risk?
- This case illustrates the severe consequences for litigants who introduce AI-generated deepfakes and fabricated evidence into court proceedings. It highlights the judiciary's increasing scrutiny of evidentiary authenticity and the willingness to impose terminating sanctions to protect the integrity of the judicial process.
- What does the public record establish about Ariel Mendones, et al. v. Cushman and Wakefield 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 Ariel Mendones, et al. v. Cushman and Wakefield 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.