Atty. Gregory P. Casimer

Atty. Gregory P. Casimer

Gregory P. Casimer is a lawyer practicing intellectual property, litigation, patent infringement and 2 other areas of law.

Chicago Chicago 27 J. Erfahrung 27 year
Call (312) 481-8617 Book Appointment

Profile Summary

About Gregory P. Casimer at a glance

Gregory P. Casimer is a Partner based in Chicago, Illinois, practicing at Lathrop Gage LLP. They have 27+ years of legal experience, licensed to practice since 1999. Their practice focuses on patent, trademark, ip, and litigation. Admitted to practice in Illinois (1999). Educated at DePaul University (J.D., 1998) and Purdue University (B.S.C.E., 1985). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Gregory P. Casimer is a lawyer practicing intellectual property, litigation, patent infringement and 2 other areas of law
  • Gregory received a B.S.C.E. degree from Purdue University in 1985, and has been licensed for 27 years
  • Gregory practices at Lathrop Gage LLP in Chicago, IL

Practice Areas Explained

Gregory P. Casimer's Areas of Practice

Each practice area below reflects the types of cases Gregory P. Casimer handles, with a brief overview of what that area of law covers.

Patent Law

Gregory P. Casimer is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Trademark Law

Gregory P. Casimer is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →

Intellectual Property

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

Gregory P. Casimer 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.

Gregory P. Casimer 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 Gregory P. Casimer

Where is Gregory P. Casimer's law office located?
Gregory P. Casimer's law practice is located in Chicago, Illinois. The firm is Lathrop Gage LLP. You can contact the office directly through this profile page.
What practice areas does Gregory P. Casimer handle?
Gregory P. Casimer focuses on patent, trademark, ip, litigation. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Gregory P. Casimer practiced law?
Gregory P. Casimer has 27+ years of legal experience and has been licensed since 1999.
Where did Gregory P. Casimer go to law school?
Gregory P. Casimer earned their education at (J.D., 1998); (B.S.C.E., 1985).
How can I contact Gregory P. Casimer for a consultation?
You can contact Gregory P. Casimer 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.
DePaul University
- 1998
B.S.C.E.
Purdue University
- 1985

Bar Admissions

Illinois
Admitted: 1999

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