Incident Tracker

Coomer v. Lindell, No. 1:22-cv-01129 (D. Colo.)

sanctions

In the US District Court for Colorado, lawyers for MyPillow CEO Mike Lindell filed an opposition brief with nearly thirty defective citations — including non-existent cases — produced by generative AI they did not verify. Judge Nina Y. Wang sanctioned Christopher Kachouroff and Jennifer DeMaster $3,000 each under Rule 11, and later added a $5,000 penalty for a repeat.

Date of decision/order

2025-07-07

Court

US District Court, District of Colorado

Jurisdiction

US-FEDERAL

AI tool

Not identified in the record

Conduct

In the defamation suit brought by former Dominion director Eric Coomer, defense counsel filed a February 2025 opposition brief containing nearly thirty defective citations, including cases that did not exist, after running the draft through generative AI without checking it. Counsel did not readily disclose the AI use when the court asked.

Consequence

USD 6,000