Atty. Daniel I. Hanrahan

Atty. Daniel I. Hanrahan

Daniel I. Hanrahan is a lawyer practicing patent application, litigation, patents and 1 other area of law.

Chicago Chicago 26 yrs experience 26 year
Call (312) 442-0265 Book Appointment

Profile Summary

About Daniel I. Hanrahan at a glance

Daniel I. Hanrahan is a patent, ip, and litigation attorney based in Chicago, Illinois. They have 26+ years of legal experience, licensed to practice since 2000. Admitted to practice in Wisconsin (2000), U.S. District Court, Eastern District of Wisconsin (2003), U.S. District Court, Western District of Wisconsin (2003), and Illinois registered to practice before U.S. Patent and Trademark Office (2015). Educated at Marquette University (J.D., 2000) and Marquette University (B.S.M.E., 1997). Recognitions include Peer Reviewed. Active member of State Bar of Wisconsin. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Daniel I. Hanrahan is a lawyer practicing patent application, litigation, patents and 1 other area of law
  • Daniel received a B.S.M.E. degree from Marquette University in 1997, and has been licensed for 26 years
  • Daniel practices in Chicago, IL

Practice Areas Explained

Daniel I. Hanrahan's Areas of Practice

Each practice area below reflects the types of cases Daniel I. Hanrahan handles, with a brief overview of what that area of law covers.

Patent Law

Daniel I. Hanrahan is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Intellectual Property

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

Daniel I. Hanrahan is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Civil Litigation

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

Daniel I. Hanrahan 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 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 Daniel I. Hanrahan

Where is Daniel I. Hanrahan's law office located?
Daniel I. Hanrahan's law practice is located in Chicago, Illinois. You can contact the office directly through this profile page.
What practice areas does Daniel I. Hanrahan handle?
Daniel I. Hanrahan focuses on patent, ip, litigation. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Daniel I. Hanrahan practiced law?
Daniel I. Hanrahan has 26+ years of legal experience and has been licensed since 2000.
Where did Daniel I. Hanrahan go to law school?
Daniel I. Hanrahan earned their education at (J.D., 2000); (B.S.M.E., 1997).
How can I contact Daniel I. Hanrahan for a consultation?
You can contact Daniel I. Hanrahan 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 Daniel I. Hanrahan received?
Daniel I. Hanrahan's notable recognition includes: Peer Reviewed.

Education

J.D.
Marquette University
- 2000
B.S.M.E.
Marquette University
- 1997

Awards

Peer Reviewed

Bar Admissions

Wisconsin
Admitted: 2000
U.S. District Court, Eastern District of Wisconsin
Admitted: 2003
U.S. District Court, Western District of Wisconsin
Admitted: 2003
Illinois registered to practice before U.S. Patent and Trademark Office
Admitted: 2015

Reviews

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