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Courts on AI / Fabricated or misquoted citations

In re Marriage of Muriel and Farris

Court of Appeals of Washington, Division Two · State appellate courts · WA · · No. 60903-7-II · opinion

The Washington Court of Appeals affirms a parenting plan and awards Rebekah Muriel fees for responding to Jonathan Farris’s response brief. The court says the brief twice cited nonexistent Marriage of Sanjuan, surmises AI-assisted drafting, deems the filing frivolous, and sets the fee amount for the commissioner.

Disposition
The court affirmed the parenting plan and awarded fees for time spent responding to a brief citing a nonexistent case.
Recorded conduct
Response brief twice cited nonexistent Marriage of Sanjuan; the court surmised AI-assisted drafting and deemed the filing frivolous. — outcome: costs order; actor: other
Canonical record
Incident tracker entry — verified outcome, regulator disposition and related rules

What the court wrote

Verbatim from the court's document (public domain). Ellipses mark omitted text; nothing is paraphrased.

However, we award appellate attorney fees to Rebekah under RAP 18.9(a) for her time spent reviewing and responding to Jonathan’s response brief. Here, Jonathan’s brief twice cites to Marriage of Sanjuan to support his arguments, but as Rebekah points out in her reply brief, no such case exists. We surmise that Jonathan used artificial intelligence (AI) to assist in writing his brief, which resulted in an “AI hallucination.”13 While Jonathan is entitled to use AI to write his response brief, he is still required to conduct a reasonable inquiry and confirm that the claims he advances are well-grounded in fact and in law. In re Estate of Little, 9 Wn. App. 2d 262, 274 n.4, 444 P.3d 23 (stating that “[w]e hold a pro se litigant to the same standard as an attorney”), review denied, 194 Wn.2d 1006 (2019). In citing to a hallucinated case, Jonathan has submitted a frivolous filing that “is so totally devoid of merit.” A.T., 11 Wn. App. 2d at 171. Accordingly, we award Rebekah appellate attorney fees for time spent reviewing and responding to Jonathan’s response brief in an amount to be determined by the commissioner pursuant to RAP 18.1(f).

Authorities cited in the passage: Marriage of Sanjuan · RAP 18.9(a) · In re Estate of Little, 9 Wn. App. 2d 262 (2019) · A.T., 11 Wn. App. 2d 156 · RAP 18.1(f)

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