Atty. Terrence Patrick McMahon

Atty. Terrence Patrick McMahon

Terrence Patrick McMahon is a lawyer practicing patent infringement, trademark infringement, computer hardware/networking and 8 other areas of law. Terrence received a B.S.C. degree from Santa Clara University in 1972, and has been licensed for 50 years.

Menlo Park Menlo Park 50 J. Erfahrung 50 year
Call (669) 330-1930 Book Appointment

Profile Summary

About Terrence Patrick McMahon at a glance

Terrence Patrick McMahon is a Partner based in Menlo Park, California, practicing at McDermott Will & Emery LLP. They have 50+ years of legal experience, licensed to practice since 1976. Their practice focuses on patent, trademark, copyright, ip, and trade secrets. Admitted to practice in California U.S. District Court, Northern District of California U.S. District Court, Central Distric (1976). Educated at Santa Clara University School of Law (J.D., 1976) and Santa Clara University (B.S.C., 1972). Recognitions include AV Preeminent. Active member of Santa Clara and American Bar Associations Association of Defense Counsel of Northern California California Trial Lawyers Association. Serands clients in Menlo Park, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Terrence Patrick McMahon is a lawyer practicing patent infringement, trademark infringement, computer hardware/networking and 8 other areas of law
  • Terrence received a B.S.C. degree from Santa Clara University in 1972, and has been licensed for 50 years
  • Terrence practices at McDermott Will & Emery LLP in Menlo Park, CA

Practice Areas Explained

Terrence Patrick McMahon's Areas of Practice

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

Patent Law

Terrence Patrick McMahon is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in California →

Trademark Law

Terrence Patrick McMahon is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in California →

Copyright Law

Terrence Patrick McMahon is one of 17,495 copyright attorneys indexed nationally. Browse copyright attorneys in California →

Intellectual Property

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

Terrence Patrick McMahon is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in California →

Trade Secrets

Terrence Patrick McMahon is one of 6,644 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in California →

Jurisdictional Context

Why local counsel matters in California

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

Looking for additional California attorneys? Browse all attorneys in Menlo Park or all attorneys in California.

Frequently Asked

Common questions about Terrence Patrick McMahon

Where is Terrence Patrick McMahon's law office located?
Terrence Patrick McMahon's law practice is located in Menlo Park, California. The firm is McDermott Will & Emery LLP. You can contact the office directly through this profile page.
What practice areas does Terrence Patrick McMahon handle?
Terrence Patrick McMahon focuses on patent, trademark, copyright, ip, trade secrets. Each practice area listed reflects experience handling cases of that type in California.
How long has Terrence Patrick McMahon practiced law?
Terrence Patrick McMahon has 50+ years of legal experience and has been licensed since 1976.
Where did Terrence Patrick McMahon go to law school?
Terrence Patrick McMahon earned their education at (J.D., 1976); (B.S.C., 1972).
How can I contact Terrence Patrick McMahon for a consultation?
You can contact Terrence Patrick 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 Terrence Patrick McMahon received?
Terrence Patrick McMahon's notable recognition includes: AV Preeminent.

Education

J.D.
Santa Clara University School of Law
- 1976
B.S.C.
Santa Clara University
- 1972

Awards

AV Preeminent

Bar Admissions

California U.S. District Court, Northern District of California U.S. District Court, Central Distric
Admitted: 1976

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