Garcia v. City of Monte Vista
U.S. District Court, District of Colorado · D. Colo. · Colorado bar guidance
Conduct
A motion to dismiss quoted language from a Tenth Circuit decision that the court found does not appear in it or in any Tenth Circuit authority it could locate.
Consequence
Rule 11 sanction, nonmonetary: AI-use certifications signed by every drafter on all future filings by the firm and the attorney, plus a warning of harsher sanctions.
Lesson
Here one nonexistent quotation drew a Rule 11 sanction even though the court accepted counsel's account of its origin and found monetary sanctions too harsh.
Verified September 30, 2026
- Citation
- Garcia v. City of Monte Vista, No. 1:25-cv-00769-WJM-KAS, Order Making Absolute Order to Show Cause and Imposing Rule 11 Sanction (D. Colo. Sept. 29, 2026), ECF No. 126; Order to Show Cause (D. Colo. May 29, 2026) (text-only entry), ECF No. 101; Order on Defendants' Motions to Dismiss (D. Colo. May 29, 2026), ECF No. 100
- Decided
- September 29, 2026
Summary
In a civil action in which Jimmy Lee Garcia alleges that the defendants, including Selma Eikelenboom-Schieveld and Richard Eikelenboom, caused his prosecution for homicide, the Eikelenbooms moved to dismiss (ECF No. 80). The motion cited Miller v. Spiers, 339 F. App'x 862, 867 (10th Cir. 2009), for the proposition "that expert witnesses retained by law enforcement are not liable for malicious prosecution because they do not control the decision to prosecute," and quoted the Tenth Circuit as stating that "the decision to prosecute rests with the prosecutor, not with witnesses or consultants." In its May 29, 2026 order denying the motion (ECF No. 100), the court stated: "The Court has identified no such quote in Miller." A footnote added that "[t]his quotation of non-existent language leaves the Court highly suspicious that counsel's citation to Miller is a product of the un-verified work of generative artificial intelligence." The same day, a text-only order (ECF No. 101) identified the motion as signed by Troy D. Krenning of the Law Office of Troy D. Krenning, LLC, and directed counsel to show cause why the firm and Krenning should not be sanctioned, requiring a declaration under penalty of perjury addressing whether he used generative AI, whether he verified its output, and whether the defendants were advised of and approved that use.
- AI tool:
- Generative AI, no tool named (counsel's declaration, as the sanctions order recounts it, states he used generative AI "primarily to help identify potentially relevant cases" and attributes the misquotation to his own notes rather than to AI; the court states it "has no way of knowing" which produced it and accepts his representations)
- Sanction amount:
- Nonmonetary: all future filings by the Law Office of Troy D. Krenning, LLC and/or Troy D. Krenning must contain an AI Certification on the use or non-use of generative AI, signed by everyone who drafted the filing; plus an express warning of harsher sanctions, including monetary sanctions
What sanction did the court impose?
Counsel's declaration (ECF No. 106), as the September 29, 2026 order recounts it, stated that he used generative AI "primarily to help identify potentially relevant cases," that the misquotation arose because "language originating from [his] own notes and summaries ultimately appeared in the [M]otion as though it were a quotation from a case," and that the error was "preventable" because he filed without "proofreading or citation review." Senior District Judge William J. Martínez stated that the court "has no way of knowing" whether the quotation came from counsel's drafting or from AI but accepted his account, and held that attributing a nonexistent quotation to an existing case violates Rule 11(b). The court was "unpersuaded" that counsel intended to deceive but found that he "displayed a reckless disregard" for the obligation to verify filings. Citing the single erroneous citation, counsel's acceptance of responsibility, his candor with his clients and his commitment to review, it found monetary sanctions "too harsh." It made the show-cause order absolute and, "[a]s a nonmonetary sanction," required every future filing by the firm and/or Krenning to carry an AI Certification signed by all who drafted it, and expressly warned that future infractions may bring harsher sanctions, including monetary sanctions (ECF No. 126). The May 29 order denied the motion on the merits.
Why does Garcia v. City of Monte Vista matter for law firms using AI?
In a 56-page order resolving four motions to dismiss, the court paused on a single quotation, stated that it “identified no such quote” in Miller v. Spiers, observed that the case turned on a different element (favorable termination), and flagged in a footnote its suspicion that the quotation was “a product of the un-verified work of generative artificial intelligence.” The same day it entered a separate text-only order to show cause directed at both the Law Office of Troy D. Krenning, LLC and Krenning individually. Beyond whether generative AI was used and whether its output was verified, that order asked whether the clients “were advised and approved of their counsel’s use of AI prior to the filing of the Motion.”
Counsel’s sworn response, as the sanctions order describes it, was that he used AI to find cases, kept a working document mixing excerpts with his own notes, and that his own paraphrase ended up in the motion as a quotation; he filed without a final citation review. The court did not resolve whether AI or counsel’s notes produced the language and accepted his account. It held the violation lay in the failure to verify, whatever the source, and chose a forward-looking sanction: AI-use certifications, signed by every drafter, on all future filings by the attorney and the firm, with an express warning that further infractions may bring monetary sanctions.
Firms documenting compliance may wish to consider that here the court found the Rule 11 violation without resolving whether AI produced the quotation, then shaped the sanction around its “continuing concerns about counsel’s future reliance on AI,” and that a single unverified quotation led to a certification requirement for all future filings by the attorney and the firm.
Implications for your firm
Operational steps a firm reading this case may wish to consider documenting. Strategic and rule-application calls belong to your firm's attorneys.
- Document a final check of every quotation and citation before a filing is handed off for submission. Here counsel admitted the motion went to a paralegal to file without proofreading or citation review, and the court found that failure to verify violated Rule 11(b).
- Review whether clients are told about AI use in their filings. The show-cause order asked counsel to state under penalty of perjury whether the defendants were advised of and approved counsel's use of AI, and one of the court's example certifications recites that the party was advised of and consented to AI use.
- Consider that the sanction ran to the law firm as well as the individual attorney: every future filing by either must carry an AI certification signed by everyone who contributed to drafting it.
Sources
Primary sources
- Counsel's June 10, 2026 declaration (ECF No. 106) was not read; its content is reported only as ECF No. 126 quotes and summarizes it. The court made no finding on whether AI produced the quotation: it stated it 'has no way of knowing' and accepted counsel's representation that the language came from his own notes and summaries.
- Judge's name: ECF Nos. 100 and 126 print 'William J. Martínez' (accented) in the caption header, and ECF No. 126 prints it the same way in its signature block; ECF No. 100's signature block prints 'Martinez'. The entry uses the operative order's spelling.