Maureen O'Brien, Criminal Defense Attorney in Chicago, Illinois
Over 42 years of legal practice
Asst. State's Atty.
Chicago, IL
Practicing criminal defense in Chicago since 1984.
- 42+
- Years practicing
- 1
- Bar admission
Practices in
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Quick answer
Maureen O'Brien is an asst. state's atty. based in Chicago, IL. The practice focuses on Criminal Defense. Maureen has over 42 years of legal experience.
- Based in
- Chicago, IL
- Experience
- over 42 years
- Known for
- Criminal Defense
- Handles Criminal Defense matters from Chicago, IL.
- Over 42 years of practice as a licensed attorney.
About Maureen O'Brien: Maureen O'Brien is an asst. state's atty. based in Chicago, IL. The practice focuses on Criminal Defense. Maureen has over 42 years of legal experience.
Areas of practice
Legal matters Maureen takes on
Maureen concentrates on criminal defense. Each area below outlines the kind of case Maureen handles, typical outcomes to expect, and how the intake process starts.
Criminal Defense cases in Chicago, Illinois
Maureen takes criminal defense matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Maureen agrees to represent you.
Biography
Meet Maureen O'Brien — criminal defense lawyer in Chicago
Maureen O'Brien is an asst. state's atty. based in Chicago, IL. The practice focuses on Criminal Defense. Maureen has over 42 years of legal experience.
Maureen O'Brien is a lawyer practicing criminal law. Maureen received a B.A. degree from St. Mary's College in 1981, and has been licensed for 42 years. Maureen practices in Chicago, IL.
Maureen's approach to criminal defense cases
Maureen O'Brien is a lawyer practicing criminal law. Maureen received a B.A. degree from St. Mary's College in 1981, and has been licensed for 42 years. Maureen practices in Chicago, IL.
Clients Maureen works with
Maureen reviews new inquiries case-by-case for criminal defense matters in Chicago and the surrounding Illinois area.
Credentials
Education, bar admissions, and languages
Chicago-Kent College of Law, Illinois Institute of Technology
J.D. · 1984
St. Mary's College
B.A. · 1981
Jurisdictions
Maureen's state bar admissions
Illinois
1984 · ACTIVE
Maureen studied at J.D. in Chicago-Kent College of Law, Illinois Institute of Technology and B.A. in St. Mary's College.
Law school and academic background
Maureen completed J.D. in Chicago-Kent College of Law, Illinois Institute of Technology and B.A. in St. Mary's College. Formal legal training is one signal of substantive knowledge — the day-to-day practice Maureen runs in Illinois is where that training gets applied to real client questions.
Locations
Maureen O'Brien's office in Chicago
Maureen's primary office is at 230 West Monroe Street Suite 2620, Chicago, IL, 60606-4726. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Maureen O'Brien
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Schedule your consultationHiring guide
How to hire Maureen O'Brien — what to expect in your first consultation
Working with a new criminal defense attorney should feel structured. Here's how the first two conversations with Maureen usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Maureen charges for the initial consult. That fee is credited toward representation if you retain Maureen's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Maureen will tell you what matters and what doesn't.
Questions to ask a criminal defense attorney in Chicago, Illinois
A short list to run through before you commit: How many criminal defense matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Maureen
Maureen discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in criminal defense practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every criminal defense matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Maureen confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Maureen's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many criminal defense practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Maureen O'Brien
How much does it cost to hire Maureen for a criminal defense case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Maureen walks through the likely range during the consult so there are no surprises.
Does Maureen offer a free consultation?
Maureen charges for the initial consult; that fee is credited toward representation if you retain Maureen's office. Some criminal defense attorneys offer free consults — check Maureen's current terms during booking.
How long do criminal defense cases in Illinois typically take?
Simple criminal defense matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Maureen gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Maureen take my case if I'm outside Chicago?
Maureen is licensed in Illinois. Matters governed by Illinois law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Maureen will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Maureen?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Maureen will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Maureen accepting new criminal defense clients right now?
Maureen's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Criminal Defense attorneys serving Chicago, Springfield and Northbrook in Illinois
Maureen handles criminal defense matters throughout Illinois. Each city below is a direct link into the search page for verified criminal defense attorneys in that community.
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If Maureen's intake is full or the fit isn't right, these criminal defense attorneys in Chicago handle similar matters. Every profile below is verified and open to consultations.





