Atty. Mary A. Onken

Atty. Mary A. Onken

Mary A. Onken is a lawyer practicing alternative dispute resolution, insurance, personal injury.

Lisle Lisle 37 yrs experience 37 year
Call (224) 524-3129 Book Appointment

Profile Summary

About Mary A. Onken at a glance

Mary A. Onken is a Pres. based in Lisle, Illinois. They have 37+ years of legal experience, licensed to practice since 1989. Their practice focuses on personal injury, insurance, and adr. Admitted to practice in Illinois (1989). Educated at University of Illinois (J.D., 1989) and Indiana University (B.A., 1986). Serands clients in Lisle, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mary A. Onken is a lawyer practicing alternative dispute resolution, insurance, personal injury
  • Mary received a B.A. degree from Indiana University in 1986, and has been licensed for 37 years
  • Mary practices in Lisle, IL

Practice Areas Explained

Mary A. Onken's Areas of Practice

Each practice area below reflects the types of cases Mary A. Onken handles, with a brief overview of what that area of law covers.

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Mary A. Onken is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Illinois →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

Mary A. Onken is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in Illinois →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Mary A. Onken is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Lisle are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Lisle or all attorneys in Illinois.

Frequently Asked

Common questions about Mary A. Onken

Where is Mary A. Onken's law office located?
Mary A. Onken's law practice is located in Lisle, Illinois. You can contact the office directly through this profile page.
What practice areas does Mary A. Onken handle?
Mary A. Onken focuses on personal injury, insurance, adr. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Mary A. Onken practiced law?
Mary A. Onken has 37+ years of legal experience and has been licensed since 1989.
Where did Mary A. Onken go to law school?
Mary A. Onken earned their education at (J.D., 1989); (B.A., 1986).
How can I contact Mary A. Onken for a consultation?
You can contact Mary A. Onken directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
University of Illinois
- 1989
B.A.
Indiana University
- 1986

Bar Admissions

Illinois
Admitted: 1989

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