Atty. John Frederick Troelstrup

Atty. John Frederick Troelstrup

John Frederick Troelstrup is a lawyer practicing federal and state litigation, business law, securities and 9 other areas of law. John received a B.A. degree from University of Missouri in 1962, and has been licensed for 58 years.

Oak Park Oak Park 58 yrs experience 58 year
Call (224) 561-1098 Book Appointment

Profile Summary

About John Frederick Troelstrup at a glance

John Frederick Troelstrup is a Member based in Oak Park, Illinois, practicing at Troelstrup Law Office. They have 58+ years of legal experience, licensed to practice since 1968. Their practice focuses on personal injury, criminal defense, business, real estate, and tax. Admitted to practice in West Virginia (inactive) (1968), U.S. District Court, Southern District of West Virginia (1968), U.S. District Court, Northern District of West Virginia (1969), and U.S. Court of Appeals, Fourth Circuit (1970). Educated at West Virginia University (J.D., 1968) and University of Missouri (B.A., 1962). Serands clients in Oak Park, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Frederick Troelstrup is a lawyer practicing federal and state litigation, business law, securities and 9 other areas of law
  • John received a B.A. degree from University of Missouri in 1962, and has been licensed for 58 years
  • John practices at Troelstrup Law Office in Oak Park, IL

Practice Areas Explained

John Frederick Troelstrup's Areas of Practice

Each practice area below reflects the types of cases John Frederick Troelstrup 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.

John Frederick Troelstrup is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Illinois →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

John Frederick Troelstrup is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Illinois →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John Frederick Troelstrup is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

John Frederick Troelstrup is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

John Frederick Troelstrup is one of 85,302 tax attorneys indexed nationally. Browse tax 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 Oak Park 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 Oak Park or all attorneys in Illinois.

Frequently Asked

Common questions about John Frederick Troelstrup

Where is John Frederick Troelstrup's law office located?
John Frederick Troelstrup's law practice is located in Oak Park, Illinois. The firm is Troelstrup Law Office. You can contact the office directly through this profile page.
What practice areas does John Frederick Troelstrup handle?
John Frederick Troelstrup focuses on personal injury, criminal defense, business, real estate, tax. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has John Frederick Troelstrup practiced law?
John Frederick Troelstrup has 58+ years of legal experience and has been licensed since 1968.
Where did John Frederick Troelstrup go to law school?
John Frederick Troelstrup earned their education at (J.D., 1968); (B.A., 1962).
How can I contact John Frederick Troelstrup for a consultation?
You can contact John Frederick Troelstrup 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.
West Virginia University
- 1968
B.A.
University of Missouri
- 1962

Bar Admissions

West Virginia (inactive)
Admitted: 1968
U.S. District Court, Southern District of West Virginia
Admitted: 1968
U.S. District Court, Northern District of West Virginia
Admitted: 1969
U.S. Court of Appeals, Fourth Circuit
Admitted: 1970
U.S. Supreme Court
Admitted: 1971
U.S. District Court, District of Wisconsin, U.S. Court of Appeals, Seventh Circuit and U.S. District
Admitted: 1979
Illinois
Admitted: 1980
U.S. District Court, Western District of Tennessee
Admitted: 1980

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