Atty. Patrick Dennis McPherson

Atty. Patrick Dennis McPherson

Patrick Dennis McPherson is a lawyer practicing patent litigation, ptab proceedings, patent prosecution and 12 other areas of law. Patrick received a B.S. degree from United States Naval Academy in 1985, and has been licensed for 31 years.

Washington Washington 31 yrs experience 31 year
Call (650) 517-0420 Book Appointment

Profile Summary

About Patrick Dennis McPherson at a glance

Patrick Dennis McPherson is a Partner based in Washington, District of Columbia, practicing at Duane Morris LLP. They have 31+ years of legal experience, licensed to practice since 1995. Their practice focuses on patent, trademark, copyright, medical malpractice, and personal injury. Admitted to practice in Maryland Court of Appeals (1995) and Maryland (1995). Educated at The Catholic University of America, Columbus School of Law (J.D., 1995) and United States Naval Academy (B.S. Naval, 1985). Active member of Professional Activities •American Intellectual Property Law Association. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Patrick Dennis McPherson is a lawyer practicing patent litigation, ptab proceedings, patent prosecution and 12 other areas of law
  • Patrick received a B.S. degree from United States Naval Academy in 1985, and has been licensed for 31 years
  • Patrick practices at Duane Morris LLP in Washington, DC

Practice Areas Explained

Patrick Dennis McPherson's Areas of Practice

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

Patent Law

Patrick Dennis McPherson is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in District of Columbia →

Trademark Law

Patrick Dennis McPherson is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in District of Columbia →

Copyright Law

Patrick Dennis McPherson is one of 17,495 copyright attorneys indexed nationally. Browse copyright attorneys in District of Columbia →

Medical Malpractice

Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.

Patrick Dennis McPherson is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in District of Columbia →

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Patrick Dennis McPherson is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Patrick Dennis McPherson

Where is Patrick Dennis McPherson's law office located?
Patrick Dennis McPherson's law practice is located in Washington, District of Columbia. The firm is Duane Morris LLP. You can contact the office directly through this profile page.
What practice areas does Patrick Dennis McPherson handle?
Patrick Dennis McPherson focuses on patent, trademark, copyright, medical malpractice, personal injury. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Patrick Dennis McPherson practiced law?
Patrick Dennis McPherson has 31+ years of legal experience and has been licensed since 1995.
Where did Patrick Dennis McPherson go to law school?
Patrick Dennis McPherson earned their education at (J.D., 1995); (B.S. Naval, 1985).
How can I contact Patrick Dennis McPherson for a consultation?
You can contact Patrick Dennis McPherson 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.
The Catholic University of America, Columbus School of Law
- 1995
B.S. Naval
United States Naval Academy
- 1985

Bar Admissions

Maryland Court of Appeals
Admitted: 1995
Maryland
Admitted: 1995

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