Atty. Brian Patrick O'Shaughnessy

Atty. Brian Patrick O'Shaughnessy

Brian Patrick O'Shaughnessy is a lawyer practicing intellectual property, technology licensing, patent procurement and litigation. Brian received a degree from Rochester Institute of Technology in 1981, and has been licensed for 40 years.

Washington Washington 40 yrs experience 40 year
Call (771) 224-8358 Book Appointment

Profile Summary

About Brian Patrick O'Shaughnessy at a glance

Brian Patrick O'Shaughnessy is a Shareholder based in Washington, District of Columbia, practicing at RatnerPrestia A Professional Corporation. They have 40+ years of legal experience, licensed to practice since 1986. Their practice focuses on ip and litigation. Admitted to practice in Illinois (1986), North Carolina (1990), District of Columbia (1993), and Virginia U.S. District Court, Northern District of Illinois U.S. District Court, Western District of (1998). Educated at Syracuse University College of Law (J.D., 1986) and Rochester Institute of Technology (B.S.Ch. Rochester, 1981). Recognitions include AV Preeminent. Active member of Board of Trustees, American Bar Association American Intellectual Property Law Association Licensing Executives Society. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Brian Patrick O'Shaughnessy is a lawyer practicing intellectual property, technology licensing, patent procurement and litigation
  • Brian received a degree from Rochester Institute of Technology in 1981, and has been licensed for 40 years
  • Brian practices at RatnerPrestia A Professional Corporation in Washington, DC

Practice Areas Explained

Brian Patrick O'Shaughnessy's Areas of Practice

Each practice area below reflects the types of cases Brian Patrick O'Shaughnessy handles, with a brief overview of what that area of law covers.

Intellectual Property

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

Brian Patrick O'Shaughnessy is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Civil Litigation

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

Brian Patrick O'Shaughnessy is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 Brian Patrick O'Shaughnessy

Where is Brian Patrick O'Shaughnessy's law office located?
Brian Patrick O'Shaughnessy's law practice is located in Washington, District of Columbia. The firm is RatnerPrestia A Professional Corporation. You can contact the office directly through this profile page.
What practice areas does Brian Patrick O'Shaughnessy handle?
Brian Patrick O'Shaughnessy focuses on ip, litigation. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Brian Patrick O'Shaughnessy practiced law?
Brian Patrick O'Shaughnessy has 40+ years of legal experience and has been licensed since 1986.
Where did Brian Patrick O'Shaughnessy go to law school?
Brian Patrick O'Shaughnessy earned their education at (J.D., 1986); (B.S.Ch. Rochester, 1981).
How can I contact Brian Patrick O'Shaughnessy for a consultation?
You can contact Brian Patrick O'Shaughnessy 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 Brian Patrick O'Shaughnessy received?
Brian Patrick O'Shaughnessy's notable recognition includes: AV Preeminent.

Education

J.D.
Syracuse University College of Law
- 1986
B.S.Ch. Rochester
Rochester Institute of Technology
- 1981

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1986
North Carolina
Admitted: 1990
District of Columbia
Admitted: 1993
Virginia U.S. District Court, Northern District of Illinois U.S. District Court, Western District of
Admitted: 1998

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