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Reason
Reason
Eugene Volokh

Apparent AI Hallucinations in Defense Filing in Coomer v. Lindell / My Pillow Election-Related Libel Suit

[Post was originally posted April 24, 2025, at 8:14 pm.]

From yesterday's decision by Judge Nina Wang in Coomer v. Lindell (D. Colo.):

As discussed extensively on the record, after confirming with Mr. Kachouroff that he signed the Opposition consistent with his obligations under Rule 11 of the Federal Rules of Civil Procedure, the Court identified nearly thirty defective citations in the Opposition. These defects include but are not limited to misquotes of cited cases; misrepresentations of principles of law associated with cited cases, including discussions of legal principles that simply do not appear within such decisions; misstatements regarding whether case law originated from a binding authority such as the United States Court of Appeals for the Tenth Circuit; misattributions of case law to this District; and most egregiously, citation of cases that do not exist.

Despite having every opportunity to do so, Mr. Kachouroff declined to explain to the Court how the Opposition became replete with such fundamental errors. For example, when confronted with the first misquotation in a parenthetical appearing on page 3 of the Opposition—purportedly drawn from Mata v. City of Farmington, 798 F. Supp. 2d 1215, 1227 (D.N.M. 2011)—Mr. Kachouroff stated to the Court:

Your Honor I may have made a mistake and I may have paraphrased and put quotes by mistake. I wasn't intending to mislead the Court. I don't think the quote is far off from what you read to me.

When asked how a case from the United States District Court for the Eastern District of Kentucky became attributable to the United States District Court for the District of Colorado, Mr. Kachouroff indicated that he "had given the cite checking to another person," later identified as Ms. DeMaster. When asked whether he would be surprised to find out that the citation Perkins v. Fed. Fruit & Produce Co., 945 F.3d 1242, 1251 (10th Cir. 2019) appearing on page 6 of Defendants' Opposition did not exist as an actual case, Mr. Kachouroff indicated that he would be surprised.

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