Atty. John Robert Duncan

Atty. John Robert Duncan

John Robert Duncan is a lawyer practicing patent law, trademark law, intellectual property law. John received a B.S. degree from South Dakota School of Mines and Technology in 1956, and has been licensed for 62 years.

San Diego San Diego 62 J. Erfahrung 62 year
Call (619) 374-3518 Book Appointment

Profile Summary

About John Robert Duncan at a glance

John Robert Duncan is a trademark, real estate, and ip attorney based in San Diego, California. They have 62+ years of legal experience, licensed to practice since 1964. Admitted to practice in Virginia (1964), New York (1965), California (1969), and U.S. Supreme Court (1972). Educated at George Washington University (J.D., 1964) and South Dakota School of Mines and Technology (B.S. Chem.E., 1956). Active member of State Bar of California American patent Law Association San Diego Patent Law Association. Serands clients in San Diego, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • John Robert Duncan is a lawyer practicing patent law, trademark law, intellectual property law
  • John received a B.S. degree from South Dakota School of Mines and Technology in 1956, and has been licensed for 62 years
  • John practices in San Diego, CA

Practice Areas Explained

John Robert Duncan's Areas of Practice

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

Trademark Law

John Robert Duncan is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in California →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

John Robert Duncan is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in California →

Intellectual Property

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

John Robert Duncan is one of 106,079 ip attorneys indexed nationally. Browse ip 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 San Diego 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 San Diego or all attorneys in California.

Frequently Asked

Common questions about John Robert Duncan

Where is John Robert Duncan's law office located?
John Robert Duncan's law practice is located in San Diego, California. You can contact the office directly through this profile page.
What practice areas does John Robert Duncan handle?
John Robert Duncan focuses on trademark, real estate, ip. Each practice area listed reflects experience handling cases of that type in California.
How long has John Robert Duncan practiced law?
John Robert Duncan has 62+ years of legal experience and has been licensed since 1964.
Where did John Robert Duncan go to law school?
John Robert Duncan earned their education at (J.D., 1964); (B.S. Chem.E., 1956).
How can I contact John Robert Duncan for a consultation?
You can contact John Robert Duncan 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.
George Washington University
- 1964
B.S. Chem.E.
South Dakota School of Mines and Technology
- 1956

Bar Admissions

Virginia
Admitted: 1964
New York
Admitted: 1965
California
Admitted: 1969
U.S. Supreme Court
Admitted: 1972

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