U.S. Magistrate Judge Mark D. Clarke, sitting in the District of Oregon, has issued the most expensive AI hallucination sanction in American legal history. Stephen Brigandi, a San Diego-based attorney representing an Oregon woman in a $12 million elder-abuse-and-conversion case over control of her family's Valley View winery and tasting room in Jacksonville, Oregon, filed three briefs in the case. The three briefs together contained 23 case citations that did not exist and 8 quotations that had been fabricated, in their entirety, by a generative AI tool. The court did not just decline the briefs. The court dismissed the underlying lawsuit with prejudice and imposed a total of $110,000 in monetary sanctions and attorneys' fees on Brigandi and his Portland co-counsel Tim Murphy, with the bulk of the financial penalty, $96,000, falling on Brigandi himself.
This is the part of the AI hallucination story that earlier sanctions in 2023, 2024, and 2025 had only gestured at. Earlier cases produced sanctions in the $5,000 range. Some pushed into the $30,000 range. The infamous Mata v. Avianca case in New York that opened the modern era of "ChatGPT in court" caused two attorneys to be fined $5,000 each. The Oregon vineyard case is more than ten times that. It is the first sanction order in the United States to put a six-figure number, on a single case, behind the simple sentence "the lawyer used AI and did not check the output."
What Happened, In Plain English
The plaintiff was Joanne Couvrette. Couvrette sued her two brothers for control of the family's Valley View winery, alleging elder abuse and wrongful enrichment, and seeking $12 million in damages. Stephen Brigandi was her lead attorney. Brigandi was based in San Diego and was not licensed to practice in Oregon. To meet the procedural requirement that an out-of-state attorney be paired with a locally licensed counsel of record, Brigandi worked with Tim Murphy, a Portland attorney. Brigandi drafted the three substantive briefs that ultimately produced the sanctions. Murphy, as the local-rule co-counsel, signed the briefs as the procedural attorney of record.
The briefs contained 23 case citations to opinions that had never been written. They contained 8 verbatim quotations attributed to those nonexistent opinions. Some of the citations referenced real-sounding case names but invented docket numbers. Others referenced real docket numbers but invented holdings. The combinations were the kind of confident, internally-consistent text that modern large language models produce when asked to draft a legal argument. The court, examining the briefs, found that none of the cited authorities supported the propositions the briefs claimed, and that several of the cited authorities did not exist at all.
The Sanctions Order Is The First Of Its Kind In Three Ways
The first respect in which Magistrate Clarke's order is a precedent setter is its size. Before this case, the largest U.S. sanction tied to AI-fabricated case law in a single matter was approximately $31,100. Clarke's order multiplies that by more than three. The split is unusual. Of the $110,000 total in sanctions and fees, $96,000 falls directly on Brigandi as the drafting attorney, with the remaining roughly $14,000 split between fees to opposing counsel and procedural sanctions on Murphy as the local attorney of record who signed the filings.
The second respect is the dismissal with prejudice. Most previous AI hallucination cases have produced sanctions but allowed the underlying lawsuit to proceed to merits. Clarke dismissed the Couvrette lawsuit entirely. The plaintiff lost her case. The plaintiff did not lose because her elder-abuse claim lacked merit on the facts. The plaintiff lost because her attorney filed AI-hallucinated case law into a federal record. That is a new kind of cost. The client paid the price for the lawyer's tool.
The third respect is that Clarke's written opinion explicitly frames the issue as a structural problem with how attorneys are using generative AI in 2026, rather than as a one-off ethics breach. The opinion lays out, in language clearly intended to be cited by other federal magistrates, the duty to verify, the duty to disclose AI use, and the heightened risk that fabrications create when an AI system has been trained on legal text and produces output in the format of real case citations. The opinion is, in effect, a template that other district courts will quote.
The Pattern Around This Case Is Now Routine
The Oregon vineyard sanction does not exist in isolation. Tracking organizations that monitor AI in legal practice, including ComplianceHub.Wiki and the Helsell Fetterman litigation blog, have catalogued at least dozens of distinct AI hallucination filings in U.S. courts in the first four months of 2026 alone. The pattern is consistent. An attorney, often a solo practitioner or small-firm litigator, asks a large language model for legal authority to support a particular argument. The model produces a list of citations. The citations look real. The attorney pastes the citations into the brief without independently verifying any of them. Opposing counsel, or the court itself, checks the citations against Westlaw or Lexis. The citations turn out to be fabricated. The court issues an order to show cause. The attorney apologizes. The court issues sanctions. The size of the sanction goes up every quarter.
What is genuinely new about the 2026 wave is the speed at which the size of penalties is escalating. In 2023 and 2024, courts treated AI-hallucinated citations as embarrassing but not career-ending. By the second half of 2025, sanctions in the $20,000 to $30,000 range began to appear in federal district court. Now, in April 2026, a single case has produced a $110,000 order, a dismissal with prejudice, and a written opinion that other courts will treat as a template. The trajectory is a curve, not a line. The next sanction order at this size will not be the headline. The next sanction order will be the second sanction order at this size, and it will arrive in months, not quarters.
The Most Uncomfortable Detail Is The Co-Counsel Issue
Tim Murphy, the Portland attorney, did not draft the briefs. Murphy did not generate the AI-hallucinated text. Murphy's role was procedural. He was Brigandi's pro hac vice sponsor, the locally licensed attorney whose presence on the filings allowed the out-of-state lead counsel to appear in an Oregon federal court. Murphy is also being sanctioned. The court's reasoning is that the duty to verify the contents of a filing does not vanish just because someone else drafted it. If your name is on the brief, you are responsible for the brief. The court treats the AI-generated content the same way it would treat any other unverified factual claim in a filing. The signatory is responsible.
That is a precedent every junior associate, every of-counsel attorney, every co-signer of a federal pleading should read carefully. The era in which a junior or co-counsel attorney could rely on the lead attorney's verification work is, at minimum, on notice. If a federal court can pull $14,000 out of a Portland attorney whose only sin was sponsoring the lead counsel and signing the local filing, then the standard for what a co-signer must check before putting a name on a brief just moved.
The Client Lost Her Case Because Of A Tool
The most morally serious sentence in this entire piece is the one I have already written and want to repeat. Joanne Couvrette did not lose her elder-abuse-and-conversion lawsuit on the facts. She lost it because her attorney filed AI-hallucinated case law into the record and the court declined to keep proceeding under those conditions. We do not know, from the public record, whether her underlying claim was strong, weak, or somewhere in the middle. We know that the substantive merit of the claim was never reached. Her case died in the procedural wing of the courthouse because her attorney took a shortcut that the federal bench has decided is not survivable.
What This Means For Anyone Filing With Generative AI Tools
The lesson is not "do not use AI in legal practice." That lesson has been preached for two years and has been ignored, because the productivity benefits are real and the rate of misuse is also real. The lesson is more specific. Every citation generated by a large language model has to be opened, read, and verified against the actual reporter or database before it goes into a filing. Every quotation has to be matched, character by character, against the source. Every holding paraphrased from an AI summary has to be cross-checked against the underlying opinion. None of this is exotic. All of this is what attorneys were trained to do before AI tools existed. The only thing that has changed is that the AI tools produce confident-sounding text faster than verification can keep up, and a non-trivial number of attorneys are choosing to skip the verification step.
The Oregon vineyard sanction is, in plain terms, the bill for that choice. The bill came due in April. The bill was $110,000. The bill is going to come due, again, in another courtroom, soon, and the next one is not going to be the most expensive AI hallucination sanction on the record for very long. That is the trajectory. The trajectory is a curve.
The Receipt
Stephen Brigandi, San Diego attorney. Tim Murphy, Portland co-counsel. Three briefs. 23 fabricated case citations. 8 false quotations. $110,000 in total sanctions and fees, with $96,000 falling on Brigandi alone. Lawsuit dismissed with prejudice. Plaintiff Joanne Couvrette loses control of the Valley View family winery dispute on procedural grounds, not on merits. Magistrate Judge Mark D. Clarke writes an opinion designed to be cited by other federal magistrates the next time this happens. The next time this happens will be soon. The size of the next sanction will be larger. The number 23 is not large by language-model output standards. The number 23 is the size of one drafting session by a busy attorney who did not check.
This site has been documenting the AI reckoning, one receipt at a time, since the first lawsuits filed against OpenAI began landing in U.S. district courts. The receipts have grown by an order of magnitude in the last year alone. The Oregon vineyard order is the receipt that finally puts a six-figure number on a single sentence: "I did not check the citations." That sentence used to be cheap. That sentence is no longer cheap. That sentence, on the current curve, is about to get more expensive.