The Jurisdiction Map: Where U.S. Courts Are Sanctioning AI Citations Hardest

Written by the Citation Safe Research Desk · Reviewed by Andy Gaber, Founder — July 17, 2026

Part of: AI Citation Sanctions: What 49 Real Court Cases Show

Citation Safe’s 49-case sanctions set spans multiple tiers of the U.S. judiciary at once — federal district courts, federal circuit courts of appeals, state trial and appellate courts — plus a handful of non-U.S. jurisdictions, rather than concentrating in any single court system.
Named cases in the tracked set touch the Eleventh Circuit, the District of Arizona, the Central District of California, the Eastern District of Texas, the Middle District of Florida, the Western District of Washington, the Southern District of New York, and California’s Fourth District Court of Appeal, among others.
The spread argues against treating this as a problem tied to one court’s culture or one region’s bar — sanctioned filings have surfaced everywhere from a federal circuit court of appeals to a state credit-union dispute.
Citation Safe does not publish an independently-derived circuit-by-circuit tally beyond the cases documented in its database; readers who need the full current breakdown should check citationsafe.com/sanctions-database directly, since the set updates as new sanctions are logged.

Why jurisdiction spread is worth mapping at all

A natural first assumption about AI hallucination sanctions is that they’d cluster somewhere specific — a jurisdiction with a particularly permissive local bar, or a court known for heavy self-represented litigant volume. Citation Safe’s tracked 49-case set doesn’t support that assumption. The named cases in the database span federal trial courts, a federal circuit court of appeals, state trial courts, and state appellate courts, across a geographic range that runs from Florida to Washington State to Arizona to New York (citationsafe.com/sanctions-database).

That spread matters for how a firm should think about its own exposure. If sanctions were concentrated in one district or one type of court, a firm that never appears there could reasonably treat the risk as remote. That is not the pattern here.

The federal courts represented in the tracked set

Several named cases in Citation Safe’s database sit in federal district courts spread across the country. Michael L. Ruiz v. Magellan Financial & Insurance Services was an order-to-show-cause matter in the District of Arizona (decided 2026-07-08). Pedro Paulo Mansur Pagano Sampaio v. Wells Fargo Bank reached the same procedural stage in the Central District of California (2026-07-02). John Hurt v. Ampcus, Inc. was an admonishment-level case out of the Eastern District of Texas (2026-07-08). Julia Rose v. Arts Bonita, Inc. resolved as a warning in the Middle District of Florida (2026-07-12), and Jordan Slach v. City of Battle Ground resolved the same way in the Western District of Washington (2026-07-02). Cartagena v. Dixon, Blackburn, and T.A. Blackburn Law — the case involving a documented repeat offender — was decided in the Southern District of New York (2026-07-10) (citationsafe.com/sanctions-database/cartagena-v-dixon-blackburn-and-t-a-blackburn-law-2-20260710).

At the appellate level, Marion Parnell, Jr. v. Florida Department of Corrections reached the Eleventh Circuit Court of Appeals (2026-07-10), combining a partly-struck brief, an adverse costs order, and a bar referral in a single federal appellate decision (citationsafe.com/blog/sanctions/marion-parnell-jr-v-florida-department-of-corrections-20260710). That a circuit court of appeals — not just trial-level courts — has already issued a sanction in this category is a data point worth sitting with: appellate review did not catch the fabrication before it reached the panel; the panel itself did.

The state courts represented

State courts show up in the tracked set too, and not only at the trial level. Patterson v. Nuvision Credit Union was decided by California’s Fourth District Court of Appeal (2026-07-02), a state intermediate appellate court, and involved five separate fabricated citations across case law, a misquoted precedent, and a misrepresented holding in a single opening brief (citationsafe.com/sanctions-database/patterson-v-nuvision-credit-union-20260702). Del Biaggio v. Bansen, also before California’s Fourth District, carried a $1,500 monetary sanction (2026-07-10). Citation Safe’s broader coverage notes at least one Delaware Chancery Court matter and at least one state supreme court matter within the full 49-case set, in addition to the state appellate cases named above — court-tier diversity that spans from a single county trial court up through a state’s highest court.

Reading the spread correctly: filing volume and attention, not necessarily rate

It would be a mistake to read “cases have appeared in the Eleventh Circuit and the Southern District of New York” as evidence that AI hallucination is more common in those courts specifically. A more defensible reading is that sanction visibility tracks two separate things at once: how much filing volume a court handles, and how much scrutiny a given court or judge applies to citations before a decision reaches the public record. A high-volume federal district in a major legal market will naturally generate more filings, and therefore more opportunities for a fabricated citation to surface, than a low-volume rural county court — independent of whether attorneys in either venue are more or less careful on average. Citation Safe’s own teardowns do not attempt to control for filing volume when reporting the tracked cases, and neither does this article; the honest statement is that the tracked 49-case set shows sanctions have occurred across a wide range of court types and geographies, not that any specific jurisdiction has a higher underlying rate.

What this means for a filing workflow regardless of venue

No jurisdiction has shown itself immune. The tracked set includes a federal circuit court of appeals, multiple federal district courts spanning four time zones, and state courts from trial level through a state’s highest court.
Appellate review is not a backstop. Parnell shows a circuit court of appeals imposing a sanction directly, meaning the fabrication survived trial-level filing, opposing counsel’s review, and appellate briefing before it was caught.
A firm’s historical safety in a particular court is not evidence of lower risk going forward. The jurisdictional spread in the tracked set argues for treating pre-filing citation verification as a universal practice, not a response to a specific court’s known scrutiny.
The current, complete jurisdiction breakdown lives in the database, not in any static summary. Because the set updates as new sanctions are logged, citationsafe.com/sanctions-database is the source of record, not this or any other point-in-time article.

Sources

Citation Safe, Public AI Legal Sanction Case Database, accessed 2026-07-16.
Citation Safe, individual case teardowns cited by name above (Patterson, Cartagena, Parnell).

Citation Safe is a verification workflow tool, not legal advice. No attorney-client relationship is created. Human review is always required. Case summaries above are compiled from public court records and Citation Safe’s own tracked database; always confirm case details against the primary source before relying on them.

Check a brief before you file it →