Mezu v. Mezu

CourtCourt of Special Appeals of Maryland
DecidedOctober 29, 2025
Docket0361/25
StatusPublished

This text of Mezu v. Mezu (Mezu v. Mezu) is published on Counsel Stack Legal Research, covering Court of Special Appeals of Maryland primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Mezu v. Mezu, (Md. Ct. App. 2025).

Opinion

Chukwuemeka Mezu v. Kristen Mezu, No. 361, September Term, 2025. Opinion by Graeff, J.

CITATIONS TO FICTITIOUS CASES GENERATED BY ARTIFICIAL INTELLIGENCE

The use of artificial intelligence (“AI”) may be a valuable tool in legal practice, but it must be used responsibly. Courts across the country have recently been presented with briefs and pleadings containing fraudulent legal citations, which result from AI “hallucinations.” If, as in this case, an attorney fails to read the AI generated citations submitted in a brief, it can result, as it did here, in a brief containing citations to multiple fictitious cases and to cases that do not support the proposition for which they are cited. Based on the nature and severity of the conduct here, this Court shall refer the attorney to the Attorney Grievance Commission. Circuit Court for Harford County Case No. C-12-FM-24-001689

REPORTED

IN THE APPELLATE COURT

OF MARYLAND

No. 361

September Term, 2025

______________________________________

CHUKWUEMEKA MEZU

v.

KRISTEN MEZU

Graeff, Arthur, Woodward, Patrick L. (Senior Judge, Specially Assigned),

JJ. ______________________________________

Opinion by Graeff, J. ______________________________________

Pursuant to the Maryland Uniform Electronic Legal Filed: October 29, 2025 Materials Act (§§ 10-1601 et seq. of the State Government Article) this document is authentic.

2025.10.29 '00'04- 15:01:55 Gregory Hilton, Clerk This appeal arises from a Motion to Invalidate portions of a Marital Settlement

Agreement (“the MSA”) entered into by Kristen Mezu (“Mother”) and Chukwuemeka

Mezu (“Father”) after Mother filed a Complaint for Absolute Divorce. On March 19, 2025,

the Circuit Court for Harford County issued an order modifying the MSA, in part, and

otherwise incorporating the MSA into the court’s order.

On appeal, Father presents eight questions for this Court’s review,1 which we have

1 Appellant raised the following questions:

1. Whether the Circuit Court committed a legal error when it departed from Maryland Law and established precedent that places the best interests of the child as a paramount factor in custody matters.

2. Whether the Circuit Court committed legal error in upholding an MSA that was procedurally and substantively unconscionable.

3. Whether the Circuit Court committed legal error by denying Mr. Mezu his fundamental right to parent.

4. Whether the Circuit Court committed legal error by issuing the March 19, 2025 Order Without Waiting for Mr. Mezu to Respond.

5. Whether the Circuit Court committed legal error when it deviated from its own order by reducing the entire MSA into an order instead of only the personal property Order that it had ordered from both parties.

6. Whether the Circuit Court Abused its Discretion by Not Granting Mr. Mezu hearings on his Motions/Requests.

7. Whether bias in the Circuit Court Affected the Course of Proceedings in this case.

8. Whether the Circuit Court erred in upholding an MSA that had a notary date that was dated a year prior to the date the agreement was signed. consolidated and rephrased, as follows:

1. Did the circuit court err in issuing the March 19, 2025, Order?

2. Did the circuit court err by not granting Father a hearing on his post hearing motions?

3. Did the circuit court act with judicial bias?

For the reasons set forth below, we shall affirm the judgment of the circuit court.

We also address problems regarding Mother’s brief in this case, specifically the citation to

fake cases generated by artificial intelligence (“AI”).

I.

SUBMISSION OF FAKE OR INACCURATE AI GENERATED CITATIONS

The issues raised by Father typically would not result in a reported opinion. We

report this case, however, to address a problem that is recurring in courts around the

country, i.e., the use of AI to draft briefs or other pleadings, resulting in incorrect,

inaccurate, or fictitious case citations. Mother’s brief in this case is replete with citation

irregularities. These irregularities include citations to multiple fictitious cases, as well as

misquoted passages and citations to cases that do not support the proposition for which

they are cited. Before addressing the merits of the issues raised, we address this problem.

We do so as a warning to others and to determine the court’s appropriate response in this

case.

2 A.

Factual Background

After reviewing the briefs in preparation for oral argument, and finding the citation

irregularities mentioned, this Court issued an Order to Mother’s counsel to Show Cause

(“OSC”) why he should not be sanctioned and/or referred to the Attorney Grievance

Commission. The OSC ordered Mother’s counsel to provide the Court with a written

submission in the form of a sworn declaration and provide a detailed explanation as to how

Mother’s brief was generated, how counsel located the fictitious cases, and why counsel

cited cases that did not stand for the proposition cited.

In his response to the OSC, counsel stated that he prepared the brief in collaboration

with a law clerk who had worked in his office since 2021. Counsel stated that he “does not

use Lexis and/or Westlaw because he does very little appellate work.” He indicated that he

relied primarily on treatises for research and then retrieved the cited cases from the internet.

Mother’s counsel stated that he had “never used artificial intelligence for any professional

purpose.” After reviewing the law clerk’s initial draft, counsel “inquired about her research

process.” The law clerk advised that she had located cases on the internet, printed case

notes, and verified the citations. Mother’s counsel stated that he “was not involved directly

in the research of the offending citations,” and he believed that he complied with the

Maryland Rules of Professional Conduct based on his law clerk’s “efforts at vetting the

referenced cases.” He acknowledged, however, that “his oversight was insufficient to

ensure that all citations were verifiable Maryland authority.”

3 The law clerk submitted an affidavit stating that she graduated from law school in

2020 and had been a law clerk for Mother’s counsel since September 2021. She assisted

counsel with the drafting of, and research for, the brief in this case. The law clerk utilized

AI in her research, explaining that she began by using ChatGPT to search for relevant cases.

She received a generated list of cases, which she acknowledged included cases that were

inaccurately cited and did not exist. She then “searched for the case opinions via a basic

Google search in order to extract proper citations, on-point verbiage, and to identify further

cases cited within the proffered case.”

After reviewing those results, the law clerk initiated a free trial of a “for-pay”

website called “VLex,” where she “was able to find the case opinions from the list provided

by ChatGPT.” (Footnote omitted). She stated that her “examination of these case opinions

did not raise any ‘red flags.’”2 The law clerk primarily used ChatGPT and VLex, but she

also visited Court Listener, CaseMine, and Justia. She stated that she “was not aware that

these sites were controlled by AI, or that the search results produced by these sites were

the product of AI.” The law clerk then finalized her draft and forwarded it to counsel.

Counsel then made changes to the draft and asked the clerk to review the latest

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Bluebook (online)
Mezu v. Mezu, Counsel Stack Legal Research, https://law.counselstack.com/opinion/mezu-v-mezu-mdctspecapp-2025.