as of 6/18/2026 7:41:08 AM

Marianne Mann Hannigan

Law Office of M. Anne Hannigan & Associates
23 Public Square Suite 403
Belleville, Illinois 62220-1627

(618) 671-6567

Not available

Date Admitted

November 08, 1990

Illinois Registration Status

Permanent retirement - not authorized to practice law or provide pro bono services – Last Registered Year: 2018

Malpractice Insurance

No malpractice report received as attorney is not registered

Public Record of Discipline and Pending Proceedings
Case(s) below are identified by caption and Commission case number. If there is more than one case, the cases are listed from most recent to oldest. A case may have more than one disposition or more than one component to a disposition, in which case each disposition and component is also listed separately within that case record, again in an order from most recent to oldest.

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Case Research
to access any documents regarding this lawyer that are in our database. Case Research contains most disciplinary opinions of the Supreme Court and most disciplinary orders and board reports issued since 1990. If Case Research does not contain the information you are seeking, please contact the Commission's Clerk's Office for assistance. Contact information for the Clerk's office is available under Clerk's Office Services.

In re Hannigan, Marianne Mann, 2011PR00149
(One of multiple dispositions on this case)
Disposition Probation
Effective Date of Disposition 10/05/2013
End Date of Disposition 10/04/2016 Probationary condition(s) satisfied.
Definition of Disposition Probation reflects a determination that the lawyer has engaged in misconduct, but also a finding that the lawyer may continue to practice law pursuant to specified conditions under ARDC supervision without posing a risk to the public, profession, or courts. As a result, the lawyer may continue to practice law during the period of probation, subject to the conditions imposed by the Court. Probation may be ordered for a specified period of time or for a specified period of time and until further order of the Court. Probation may be ordered in conjunction with a suspension, which may be stayed in whole or in part. A stay defers that portion of the suspension as long as the lawyer complies with probationary conditions. If the lawyer successfully completes probation, the lawyer is not actually suspended during any portion of the stayed suspension.
In re Hannigan, Marianne Mann, 2011PR00149
(One of multiple dispositions on this case)
Disposition Suspension for a specified period of time and until further order of the Court. Suspension stayed in part.
Effective Date of Disposition 04/05/2013
End Date of Disposition 10/05/2013
Definition of Disposition The Supreme Court may order that, following a suspension, a further period of suspension be stayed, typically in connection with an order of probation. A stay defers the further suspension period as long as the lawyer complies with probationary conditions. If the lawyer successfully completes probation, the lawyer is not actually suspended during any portion of the stayed suspension. Under those circumstances, the stayed suspension does not affect the authority of the lawyer to practice law and the lawyer may practice law during the stayed suspension. If the Court determines that the lawyer has failed to comply with probationary conditions, the Court may vacate the stay and may require that the lawyer actually serve the full suspension.
Case Summary Ms. Hannigan, who was licensed to practice law in 1990, was suspended for three years and until further order of the Court, with the suspension stayed after six months by conditional probation. She failed to timely comply with various court orders in a number of appeals in the U.S. Court of Appeals for the Seventh Circuit. She also submitted a letter to the Court of Appeals and the disciplinary commission which she falsely represented had been drafted and signed by her personal physician. Finally, she left a threatening telephone message to an attorney.
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