Atty. John Charles McMahon

Atty. John Charles McMahon

John Charles McMahon is a lawyer practicing patents, trademarks, copyrights and 3 other areas of law. John received a B.A. degree from University of Kansas in 1969, and has been licensed for 48 years.

Overland Park Overland Park 48 yrs experience 48 year
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Profile Summary

About John Charles McMahon at a glance

John Charles McMahon is a Patent Attorney based in Overland Park, Kansas, practicing at Avek IP, LLC. They have 48+ years of legal experience, licensed to practice since 1978. Their practice focuses on patent, trademark, copyright, litigation, and international. Admitted to practice in Missouri (1978) and Kansas registered to practice before U.S. Patent and Trademark Office (2005). Educated at University of Missouri at Kansas City School of Law (J.D., 1977) and University of Kansas (B.A. Math, 1969). Recognitions include AV Preeminent. Serands clients in Overland Park, KS and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Charles McMahon is a lawyer practicing patents, trademarks, copyrights and 3 other areas of law
  • John received a B.A. degree from University of Kansas in 1969, and has been licensed for 48 years
  • John practices at Avek IP, LLC in Overland Park, KS

Practice Areas Explained

John Charles McMahon's Areas of Practice

Each practice area below reflects the types of cases John Charles McMahon handles, with a brief overview of what that area of law covers.

Patent Law

John Charles McMahon is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Kansas →

Trademark Law

John Charles McMahon is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Kansas →

Copyright Law

John Charles McMahon is one of 17,495 copyright attorneys indexed nationally. Browse copyright attorneys in Kansas →

Civil Litigation

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

John Charles McMahon is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Kansas →

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

John Charles McMahon is one of 40,133 international attorneys indexed nationally. Browse international attorneys in Kansas →

Jurisdictional Context

Why local counsel matters in Kansas

Practicing law in Kansas. Legal matters in Kansas are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Overland Park are typically filed in the local municipal court or the appropriate Kansas state district court, depending on subject matter and amount in controversy. An attorney licensed in Kansas 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 Kansas courts without local counsel or pro hac vice admission.

Looking for additional Kansas attorneys? Browse all attorneys in Overland Park or all attorneys in Kansas.

Frequently Asked

Common questions about John Charles McMahon

Where is John Charles McMahon's law office located?
John Charles McMahon's law practice is located in Overland Park, Kansas. The firm is Avek IP, LLC. You can contact the office directly through this profile page.
What practice areas does John Charles McMahon handle?
John Charles McMahon focuses on patent, trademark, copyright, litigation, international. Each practice area listed reflects experience handling cases of that type in Kansas.
How long has John Charles McMahon practiced law?
John Charles McMahon has 48+ years of legal experience and has been licensed since 1978.
Where did John Charles McMahon go to law school?
John Charles McMahon earned their education at (J.D., 1977); (B.A. Math, 1969).
How can I contact John Charles McMahon for a consultation?
You can contact John Charles McMahon 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 John Charles McMahon received?
John Charles McMahon's notable recognition includes: AV Preeminent.

Education

J.D.
University of Missouri at Kansas City School of Law
- 1977
B.A. Math
University of Kansas
- 1969

Awards

AV Preeminent

Bar Admissions

Missouri
Admitted: 1978
Kansas registered to practice before U.S. Patent and Trademark Office
Admitted: 2005

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