Atty. Mark A. Langguth

Atty. Mark A. Langguth

Mark A. Langguth is a lawyer practicing patent infringement, government contracts, patent application and 3 other areas of law.

Lemont Lemont 33 yrs experience 33 year
Call (464) 243-2093 Book Appointment

Profile Summary

About Mark A. Langguth at a glance

Mark A. Langguth is a Sr. Atty. based in Lemont, Illinois. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on patent, contracts, ip, and government. Admitted to practice in Illinois registered to practice before U.S. Patent and Trademark Office (1993). Educated at University of Iowa (J.D., 1992) and Iowa State University (B.I.E., 1987). Serands clients in Lemont, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark A. Langguth is a lawyer practicing patent infringement, government contracts, patent application and 3 other areas of law
  • Mark received a B.I.E. degree from Iowa State University in 1987, and has been licensed for 33 years
  • Mark practices in Lemont, IL

Practice Areas Explained

Mark A. Langguth's Areas of Practice

Each practice area below reflects the types of cases Mark A. Langguth handles, with a brief overview of what that area of law covers.

Patent Law

Mark A. Langguth is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Contracts

Mark A. Langguth is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Illinois →

Intellectual Property

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

Mark A. Langguth is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

Mark A. Langguth is one of 132,225 government attorneys indexed nationally. Browse government 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 Lemont 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 Lemont or all attorneys in Illinois.

Frequently Asked

Common questions about Mark A. Langguth

Where is Mark A. Langguth's law office located?
Mark A. Langguth's law practice is located in Lemont, Illinois. You can contact the office directly through this profile page.
What practice areas does Mark A. Langguth handle?
Mark A. Langguth focuses on patent, contracts, ip, government. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Mark A. Langguth practiced law?
Mark A. Langguth has 33+ years of legal experience and has been licensed since 1993.
Where did Mark A. Langguth go to law school?
Mark A. Langguth earned their education at (J.D., 1992); (B.I.E., 1987).
How can I contact Mark A. Langguth for a consultation?
You can contact Mark A. Langguth 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 Iowa
- 1992
B.I.E.
Iowa State University
- 1987

Bar Admissions

Illinois registered to practice before U.S. Patent and Trademark Office
Admitted: 1993

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