Atty. William Mosconi

Atty. William Mosconi

William Mosconi is a lawyer practicing real estate, litigation, general practice and 3 other areas of law. William received a B.S. degree from Loyola University in 1987, and has been licensed for 35 years.

Northbrook Northbrook 35 J. Erfahrung 35 year
Call (224) 223-8016 Book Appointment

Profile Summary

About William Mosconi at a glance

William Mosconi is an Attorney based in Northbrook, Illinois, practicing at Defrenza Mosconi, PC. They have 35+ years of legal experience, licensed to practice since 1991. Their practice focuses on personal injury, business, real estate, and litigation. Admitted to practice in Illinois (1991). Educated at John Marshall Law School (J.D., 1991) and Loyola University (B.S., 1987). Serands clients in Northbrook, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • William Mosconi is a lawyer practicing real estate, litigation, general practice and 3 other areas of law
  • William received a B.S. degree from Loyola University in 1987, and has been licensed for 35 years
  • William practices at Defrenza Mosconi, PC in Northbrook, IL

Practice Areas Explained

William Mosconi's Areas of Practice

Each practice area below reflects the types of cases William Mosconi 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.

William Mosconi is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Illinois →

Business & Corporate Law

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

William Mosconi 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.

William Mosconi is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William Mosconi is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 William Mosconi

Where is William Mosconi's law office located?
William Mosconi's law practice is located in Northbrook, Illinois. The firm is Defrenza Mosconi, PC. You can contact the office directly through this profile page.
What practice areas does William Mosconi handle?
William Mosconi focuses on personal injury, business, real estate, litigation. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William Mosconi practiced law?
William Mosconi has 35+ years of legal experience and has been licensed since 1991.
Where did William Mosconi go to law school?
William Mosconi earned their education at (J.D., 1991); (B.S., 1987).
How can I contact William Mosconi for a consultation?
You can contact William Mosconi 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.
John Marshall Law School
- 1991
B.S.
Loyola University
- 1987

Bar Admissions

Illinois
Admitted: 1991

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