Atty. William W. Flachsbart

Atty. William W. Flachsbart

William W. Flachsbart is a lawyer practicing patent litigation, intellectual property litigation, intellectual property licensing and 1 other area of law.

Chicago Chicago 30 yrs experience 30 year
Call (970) 286-0899 Book Appointment

Profile Summary

About William W. Flachsbart at a glance

William W. Flachsbart is a Partner based in Chicago, Illinois, practicing at Dunlap Bennett & Ludwig PLLC. They have 30+ years of legal experience, licensed to practice since 1996. Their practice focuses on patent, business, ip, and ip licensing. Admitted to practice in Illinois (1996), U.S. District Court, Northern District of Illinois (1996), U.S. District Court, District of Arizona, Eastern District of Tennessee and U.S. Court of Appeals, F (2000), and U.S. District Court, District of Colorado (2002). Educated at Loyola University (J.D., 1996) and University of Chicago (B.S. Mathematics, 1991). Recognitions include Peer Reviewed. Active member of American Bar Association. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William W. Flachsbart is a lawyer practicing patent litigation, intellectual property litigation, intellectual property licensing and 1 other area of law
  • William received a B.S. degree from University of Chicago in 1991, and has been licensed for 30 years
  • William practices at Dunlap Bennett & Ludwig PLLC in Chicago, IL

Practice Areas Explained

William W. Flachsbart's Areas of Practice

Each practice area below reflects the types of cases William W. Flachsbart handles, with a brief overview of what that area of law covers.

Patent Law

William W. Flachsbart is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Business & Corporate Law

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

William W. Flachsbart is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

William W. Flachsbart is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

IP Licensing

William W. Flachsbart is one of 2,744 ip licensing attorneys indexed nationally. Browse ip licensing 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 Chicago 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 Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about William W. Flachsbart

Where is William W. Flachsbart's law office located?
William W. Flachsbart's law practice is located in Chicago, Illinois. The firm is Dunlap Bennett & Ludwig PLLC. You can contact the office directly through this profile page.
What practice areas does William W. Flachsbart handle?
William W. Flachsbart focuses on patent, business, ip, ip licensing. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William W. Flachsbart practiced law?
William W. Flachsbart has 30+ years of legal experience and has been licensed since 1996.
Where did William W. Flachsbart go to law school?
William W. Flachsbart earned their education at (J.D., 1996); (B.S. Mathematics, 1991).
How can I contact William W. Flachsbart for a consultation?
You can contact William W. Flachsbart 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.
What awards or recognition has William W. Flachsbart received?
William W. Flachsbart's notable recognition includes: Peer Reviewed.

Education

J.D.
Loyola University
- 1996
B.S. Mathematics
University of Chicago
- 1991

Awards

Peer Reviewed

Bar Admissions

Illinois
Admitted: 1996
U.S. District Court, Northern District of Illinois
Admitted: 1996
U.S. District Court, District of Arizona, Eastern District of Tennessee and U.S. Court of Appeals, F
Admitted: 2000
U.S. District Court, District of Colorado
Admitted: 2002
U.S. District Court, Western District of Wisconsin
Admitted: 2003
U.S. Supreme Court
Admitted: 2009

Reviews

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