Dorsey v. Ponce
U.S. District Court, Northern District of Illinois · N.D. Ill. · Illinois bar guidance
Verified May 14, 2026
- Citation
- Dorsey v. Ponce, No. 1:25-cv-01212, 2025 WL 3484962 (N.D. Ill. Dec. 4, 2025) (Pallmeyer, J.)
- Decided
- December 4, 2025
Summary
Cordarro Dorsey, proceeding pro se, brought a Section 1983 and state-tort action against four Chicago police officers over a 2023 traffic stop. His Second Amended Complaint cited numerous cases, several of which Judge Rebecca Pallmeyer could not locate. In a footnote, the court identified four likely fabrications: "State v. Slowikowski, Ohio 2003," "U.S. v. Weaver, 9th Circuit, 2016," "Mackey v. Town of Allendale, 2021," and "Sanchez v. Dart, 2016." The court suspected they were "the product of an artificial intelligence tool," though it named none and Dorsey disclosed none.
- AI tool:
- Unidentified (the court suspected an artificial intelligence tool but named none; Dorsey disclosed no tool)
What sanction did the court impose?
Judge Pallmeyer granted the motion to dismiss in part. Dorsey's prolonged-detention, unlawful-search, and trespass-to-chattels claims survived; his remaining Fourth Amendment, First Amendment, conspiracy, and state-tort claims were dismissed. The court imposed no monetary sanction for the fabricated citations. It ordered Dorsey to include "a traditional reporter or database citation for any cases he cites" in all future filings, and warned that "fabricated or hallucinated case citations in future filings will result in sanctions, including an order striking the filing and possible dismissal of the lawsuit."
Why does Dorsey v. Ponce matter for law firms using AI?
Dorsey v. Ponce shows how a court folds an AI-citation problem into an ordinary motion-to-dismiss ruling without breaking stride. Judge Pallmeyer worked through Dorsey’s Fourth Amendment, First Amendment, conspiracy, and state-tort claims on the merits, then dropped the fabricated-citation finding into a footnote. The court did not need a Rule 11 motion from the defense, and it did not pause the case. It suspected an AI tool, said so, and moved on to the remedy.
The remedy is the part worth noting. Rather than strike the filing or impose a fee, the court ordered Dorsey to attach a traditional reporter or database citation to every case in his future filings. That is a verification requirement aimed at the specific failure mode, not a generic warning. It also builds the record: a litigant who has been told, in a signed order, exactly how to cite has no good answer the next time a fabricated case appears. For a firm screening a pro se opponent’s filings in the Northern District of Illinois, the operational read is that flagging a suspicious citation in a response brief is enough to draw this kind of order, even where the citation did not change the outcome.