P-Three Development, LLC v. Therm Flo, Inc.
CA Illinois · Jun 30, 2026
What happened in this matter?
The court struck the pro se litigant's appellate brief after determining it contained multiple fabricated cases, misrepresented legal authorities, and false quotations. The court concluded that these errors, which mirrored patterns of AI-generated hallucinations, violated procedural rules and constituted an abuse of the adversary system.
- Why the court cared
- The court reasoned that the litigant's brief failed to comply with Rule 341 due to the inclusion of fictitious cases and misquoted authorities. It determined that the errors were too egregious to overlook, noting that the litigant's conduct wasted judicial resources and undermined the adversary system.
- Why it matters now
- This case illustrates the judicial response to pro se litigants using AI-generated content that includes fabricated citations. It reinforces the requirement that all filers, regardless of representation status, must verify the accuracy of their legal research and citations.
Why this matter is tracked
In an appellate matter, a pro se litigant submitted a brief containing numerous fabricated case citations, misrepresented holdings, and false quotations. The court identified multiple instances where the litigant cited non-existent cases or attributed incorrect propositions to real authorities, including misquoting the Illinois Code and disciplinary opinions. The court noted that these features were consistent with the use of generative AI tools to draft the brief. Finding the violations egregious and a waste of judicial resources, the court struck the brief. The court emphasized that while the Illinois Supreme Court permits AI use, litigants must ensure the accuracy of all submissions, as the failure to verify AI-generated content constitutes an abuse of the adversary system.
This case illustrates the judicial response to pro se litigants using AI-generated content that includes fabricated citations. It reinforces the requirement that all filers, regardless of representation status, must verify the accuracy of their legal research and citations.
Record details
What the record establishes about AI use
The court inferred the use of generative AI based on the nature of the errors.
Appellate review of a trial court's denial of a request for intervention.
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 | Quoted Canon 2.15(c) language and claims about 'appropriate action' that are not found in the cited disciplinary opinion.
- Fabricated: Case Law | Cited as authority for intervention standards but does not exist; court could not locate the opinion.
- Fabricated: Case Law | Cited as a First District decision supporting intervention but is fictitious.
- Fabricated: Case Law | Cited as a published intervention case but does not exist per the court's research.
- Misrepresented: Case Law | Attributed multiple intervention-related holdings and direct quotes that do not appear in the actual opinion.
- Misrepresented: Case Law | Quoted as holding intervention principles and reversible error language that are not in the opinion.
- Misrepresented: Case Law | Attributed several substantive holdings and quotes about intervention and timeliness that do not appear in the decision.
- False Quotes: Case Law | Quoted a proposition that the court found does not appear in the cited criminal decision (false quotation).
Show 1 additional discrepancies
- Fabricated: Case Law | Included in table of authorities as a 2018 First District opinion that the court could not locate.
Questions this record answers
- What happened in P-Three Development, LLC v. Therm Flo, Inc.?
- The court struck the pro se litigant's appellate brief after determining it contained multiple fabricated cases, misrepresented legal authorities, and false quotations. The court concluded that these errors, which mirrored patterns of AI-generated hallucinations, violated procedural rules and constituted an abuse of the adversary system.
- Why does P-Three Development, LLC v. Therm Flo, Inc. matter for legal AI risk?
- This case illustrates the judicial response to pro se litigants using AI-generated content that includes fabricated citations. It reinforces the requirement that all filers, regardless of representation status, must verify the accuracy of their legal research and citations.
- What does the public record establish about P-Three Development, LLC v. Therm Flo, Inc.?
- 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 P-Three Development, LLC v. Therm Flo, 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.