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2026-09-16

AI hallucination sanctions now reach the supervising attorney

Courts sanctioning lawyers for AI-fabricated citations are reaching supervising and co-signing attorneys too. Recent orders show what review needs to look like before your name goes on a filing.

The associate forwards opposing counsel’s reply with the subject line “Citation issue”. In this hypothetical federal employment retaliation case, the opening footnote identifies three untraceable cases and a fourth that does not contain the quoted sentence. The partner opens the filed opposition. Its signature block includes the associate who drafted with AI assistance, the supervising partner, and local counsel who submitted it.

AI hallucination sanctions can reach lawyers who supervise or submit a brief, even if they never use the drafting tool. Courts have rejected reliance on an associate and deadline pressure as excuses for unread authorities. At Turbo Law, we treat source review as the lawyer’s work: delegation does not erase responsibility, and a citation still needs someone to read it.

Who gets sanctioned when a brief cites AI-fabricated cases?

Lawyers who draft, supervise or submit a filing can face sanctions for their own review failures. The orders below turn on different conduct. What happened after someone identified the errors also mattered.

Illinois: counsel repeated fabricated language after notice. In *Scott v. Illinois Human Rights Commission*, 2026 IL App (1st) 251462 (Illinois Appellate Court, First District, July 28, 2026), the sanction was $15,000: $1,500 per false citation or misquotation. Counsel submitted four false statutory quotations, one nonexistent case and five cases that did not support the propositions asserted. Respondents flagged the errors. Counsel nevertheless repeated fabricated statutory language in the reply and called the problems “technical deficiencies”. The court found willfulness and referred the matter to the Illinois Attorney Registration and Disciplinary Commission.
Utah: admitting nonreview did not excuse the second lawyer. Judge Ted Stewart found both attorneys violated Rule 11 in *Beus Gilbert PLLC v. Brigham Young University*, No. 2:12-cv-00970-TS (United States District Court for the District of Utah, September 9, 2026). Their briefing cited a nonexistent case and authorities unrelated to the propositions asserted. The drafter received a $2,000 penalty and an obligation to complete two AI ethics CLE courses within six months. The other attorney, who admitted not reviewing the filings, received a $1,000 penalty.
Orange County: neither trust nor urgency carried the argument. In *Southland Homes & Real Estate and Investment, LLC v. Lam*, No. 30-2026-01569207 (Orange County Superior Court, Appellate Division, modified August 5, 2026; posted September 10, 2026), a supervisor said he had no reason to suspect his associate had supplied fabrications. The associate said the urgent petition left him rushed. The panel rejected both explanations, sanctioning the supervisor $2,500 and the associate $1,500, with reporting to the State Bar.
Los Angeles: the challenge came from opposing counsel. A civil case reported by the ABA Journal on September 15, 2026 resulted in a $999.99 sanction over seven nonexistent case citations. Opposing counsel raised the errors at an August 7 hearing. The lawyer’s September 3 declaration committed to independent retrieval of authorities, quotation checks against the opinions and citation audits before filing.

An existing case can still fail the check. Its actual reasoning must support the sentence in the brief.

Who gets sanctioned when a brief cites AI-fabricated cases?

Illinois: counsel repeated fabricated language after notice. In *Scott v. Illinois Human Rights Commission*, 2026 IL App (1st) 251462 (Illinois Appellate Court, First District, July 28, 2026), the sanction was $15,000: $1,500 per false citation or misquotation. Counsel submitted four false statutory quotations, one nonexistent case and five cases that did not support the propositions asserted. Respondents flagged the errors. Counsel nevertheless repeated fabricated statutory language in the reply and called the problems “technical deficiencies”. The court found willfulness and referred the matter to the Illinois Attorney Registration and Disciplinary Commission.
Utah: admitting nonreview did not excuse the second lawyer. Judge Ted Stewart found both attorneys violated Rule 11 in *Beus Gilbert PLLC v. Brigham Young University*, No. 2:12-cv-00970-TS (United States District Court for the District of Utah, September 9, 2026). Their briefing cited a nonexistent case and authorities unrelated to the propositions asserted. The drafter received a $2,000 penalty and an obligation to complete two AI ethics CLE courses within six months. The other attorney, who admitted not reviewing the filings, received a $1,000 penalty.
Orange County: neither trust nor urgency carried the argument. In *Southland Homes & Real Estate and Investment, LLC v. Lam*, No. 30-2026-01569207 (Orange County Superior Court, Appellate Division, modified August 5, 2026; posted September 10, 2026), a supervisor said he had no reason to suspect his associate had supplied fabrications. The associate said the urgent petition left him rushed. The panel rejected both explanations, sanctioning the supervisor $2,500 and the associate $1,500, with reporting to the State Bar.
Los Angeles: the challenge came from opposing counsel. A civil case reported by the ABA Journal on September 15, 2026 resulted in a $999.99 sanction over seven nonexistent case citations. Opposing counsel raised the errors at an August 7 hearing. The lawyer’s September 3 declaration committed to independent retrieval of authorities, quotation checks against the opinions and citation audits before filing.

An existing case can still fail the check. Its actual reasoning must support the sentence in the brief.

Does signing a brief mean you verified every citation?

Your signature certifies a reasonable inquiry; it does not promise infallibility. But leaving an AI-generated authority unread creates a problem that another lawyer’s involvement does not resolve.

Federal Rule of Civil Procedure 11(b) reaches presentation of a paper “whether by signing, filing, submitting, or later advocating it”. Legal contentions fall under subsection (b)(2). Factual contentions fall under subsection (b)(3), including its allowance for specifically identified contentions expected to gain evidentiary support after investigation or discovery. A deposition citation deserves attention too.

Read the authority itself.

The Utah order relied on *Park v. Kim*, 91 F.4th 610 (United States Court of Appeals for the Second Circuit, 2024), and its direction to “read, and thereby confirm” the existence and validity of authorities. Locating the case name does not finish that work.

Florida Rule of General Practice and Judicial Administration 2.515(d)(2), amended effective June 15, 2026, expressly makes each signer represent that identified authorities exist and are accurately cited, and permits sanctions for inconsistent filings. The Supreme Court of Florida adopted the amendment in No. SC2026-0673 on May 28, 2026. flcourts-media.flcourts.gov

California Senate Bill 574, pending before the governor as of September 16, 2026, would require disclosure of generative-AI use in court filings, accuracy checks and protection against entering private client information into nonconfidential AI tools.

Can a partner be sanctioned for an associate’s AI mistakes?

A partner can be sanctioned, although the title alone does not make that lawyer responsible for every subordinate’s error. Start with the partner’s conduct and the governing rule.

ABA Model Rule 5.1 requires managers to establish reasonable compliance measures and supervisors to make reasonable supervisory efforts. It also addresses ordering or knowingly ratifying misconduct, and a qualifying supervisor’s failure to act despite knowing of a violation in time to prevent or mitigate its consequences. Model Rule 5.3 covers nonlawyer assistance. States adopt their own versions.

Policies need practical follow-through. ABA Formal Opinion 512, Generative Artificial Intelligence Tools, July 29, 2024, ties supervision to training and verification, with clear firm policies governing use; generated output cannot take over the lawyer’s professional judgment.

*Southland* rejected confidence in the associate as an excuse for failing to verify the joint brief. In *Scott*, counsel’s claimed cross-check through a paid legal research service did not establish that the quoted words appeared in the source. Local counsel and co-signers should also read Utah’s finding against the attorney who never reviewed the filings.

What should you do if opposing counsel flags a fake citation in your brief?

Check the allegation promptly and correct confirmed errors on the record through the applicable procedure. Arguing about how the mistake happened can wait until you know what the filed paper actually contains.

Pull the challenged opinion independently. Compare the quotation with the text around it, then assess whether the opinion supports the proposition. Examine the remaining citations as well. Preserve the submitted version and document what needs correcting.

Do not repeat the error.

That is where *Scott* became especially damaging: counsel carried fabricated statutory language into the reply after notice. Utah presents a different response. Before the show-cause order, counsel corrected twelve errors; they later apologized and reimbursed opposing counsel’s resulting fees. The court acknowledged those steps and still imposed sanctions.

We think the useful distinction is between taking responsibility and assuming that remediation ends the matter. It may not. Explain the problem candidly to the client, including its possible effect and the proposed response, under the jurisdiction’s communication duties and correction procedures.

How do you prove a filing was actually reviewed?

Retain evidence of what the lawyer examined and decided, tied to the version submitted. A system log alone cannot establish that someone read the opinion.

Consider the employment opposition before it leaves the office. Our Review workspace reads the matter file and connects facts to their source pages and lines, updating that picture as records arrive. A partner reviewing a factual sentence can open the deposition or exhibit behind it. The next step is human: read enough surrounding material to decide whether the draft fairly states the record.

Case authorities require their own examination. Our Research workspace queries the matter file and public record together, returning authorities and holdings. It is designed to flag whether a case has been distinguished or overruled. Treat that flag as a research lead, then read the authority and check its treatment.

Our Assistant produces line-cited work product and says when the file does not support an answer. Its exportable assignment log preserves the request alongside the material read and the resulting output. Keep that trail with the supervising lawyer’s review note, including corrections and unresolved questions. The Assistant prepares work product; it does not serve, file or send.

The link is an opening, not an approval. Someone still has to read what it opens, and responsibility for the filing remains with the lawyer.

What does a supervision checklist for AI-assisted filings look like?

It names the reviewer and records the actual checking, down to the version approved. We recommend incorporating it into filing preparation regardless of firm size.

Keep it beside the draft.

Give verification an owner. Assign a lawyer to coordinate review of the particular filing. Other signers retain their own responsibilities.
Retrieve and read each authority. Use a primary source. Examine the reasoning and procedural posture, including relevant subsequent treatment.
Compare quotations with the original. Check omissions and alterations as carefully as the quoted words.
Open every record citation. Read the cited page with enough surrounding material to test the factual assertion.
Revisit facts inherited from earlier summaries. Later testimony or corrected documents may change what the current record supports.
Leave a written review note. Identify who examined which material and the version checked. Record corrections and unresolved issues.
Make policy usable. Maintain an AI-use policy and practical training consistent with ABA Formal Opinion 512.

A checked box cannot supply missing evidence. Before submission, remove the unsupported proposition, qualify it accurately or locate its support.

FAQ

Does using a paid or legal-specific AI tool lower the duty to verify?

Paying for the tool does not relieve the lawyer of verification. In *Scott*, claimed cross-checking still left language that the cited source did not contain. Check the passage and what it actually means.

Can local counsel be sanctioned for something another lawyer drafted?

Potentially: Rule 11 reaches filing and submission, and the Utah order sanctioned an attorney who admitted nonreview. The assessment depends on that lawyer’s conduct and the governing rules.

Does disclosing AI use satisfy citation-checking duties?

Disclosure leaves verification unfinished. It tells the court about tool use. It does not show that the cited opinion supports the argument, however carefully the disclosure is written. Check applicable court rules and the assigned judge’s standing orders separately.

Is a citation link the same as verification?

A working link gets you to a source; it says nothing about whether that source supports the sentence. Before approving the filing, read the passage and resolve any mismatch.

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