Atty. Leonard Jacob Brenner

Atty. Leonard Jacob Brenner

Leonard Jacob Brenner is a lawyer practicing business, corporate law, tax controversies and 3 other areas of law. Leonard received a B.S. degree from Northern Illinois University in 1979, and has been licensed for 41 years.

Northbrook Northbrook 41 yrs experience 41 year
Call (224) 326-3267 Book Appointment

Profile Summary

About Leonard Jacob Brenner at a glance

Leonard Jacob Brenner is a Member based in Northbrook, Illinois, practicing at Leonard J. Brenner, Ltd.. They have 41+ years of legal experience, licensed to practice since 1985. Their practice focuses on irs, probate, estate planning, business, and real estate. Admitted to practice in Illinois (1985), U.S. District Court, Northern District of Illinois (1987), and Wisconsin (1999). Educated at University of San Diego (J.D., 1984) and Northern Illinois University (B.S., 1979). Active member of Illinois State and American Bar Associations American Association of Attorney-Certified Public Accountants. Serands clients in Northbrook, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Leonard Jacob Brenner is a lawyer practicing business, corporate law, tax controversies and 3 other areas of law
  • Leonard received a B.S. degree from Northern Illinois University in 1979, and has been licensed for 41 years
  • Leonard practices at Leonard J. Brenner, Ltd. in Northbrook, IL

Practice Areas Explained

Leonard Jacob Brenner's Areas of Practice

Each practice area below reflects the types of cases Leonard Jacob Brenner handles, with a brief overview of what that area of law covers.

IRS Disputes & Audits

Leonard Jacob Brenner is one of 2,917 irs attorneys indexed nationally. Browse irs attorneys in Illinois →

Probate

Leonard Jacob Brenner is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Illinois →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Leonard Jacob Brenner is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Illinois →

Business & Corporate Law

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

Leonard Jacob Brenner 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.

Leonard Jacob Brenner is one of 316,149 real estate attorneys indexed nationally. Browse real estate 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 Northbrook 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 Northbrook or all attorneys in Illinois.

Frequently Asked

Common questions about Leonard Jacob Brenner

Where is Leonard Jacob Brenner's law office located?
Leonard Jacob Brenner's law practice is located in Northbrook, Illinois. The firm is Leonard J. Brenner, Ltd.. You can contact the office directly through this profile page.
What practice areas does Leonard Jacob Brenner handle?
Leonard Jacob Brenner focuses on irs, probate, estate planning, business, real estate. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Leonard Jacob Brenner practiced law?
Leonard Jacob Brenner has 41+ years of legal experience and has been licensed since 1985.
Where did Leonard Jacob Brenner go to law school?
Leonard Jacob Brenner earned their education at (J.D., 1984); (B.S., 1979).
How can I contact Leonard Jacob Brenner for a consultation?
You can contact Leonard Jacob Brenner 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 San Diego
- 1984
B.S.
Northern Illinois University
- 1979

Bar Admissions

Illinois
Admitted: 1985
U.S. District Court, Northern District of Illinois
Admitted: 1987
Wisconsin
Admitted: 1999

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