Brian Patrick O'Shaughnessy, IP Attorney in Washington, District of Columbia
Over 40 years of legal practice · focused on IP and Litigation · 5.0/5 rating from 1 verified client review
ShareholderatRatnerPrestia A Professional Corporation
Washington, DC
Practicing ip in Washington since 1986.
- 40+
- Years practicing
- 5.0 ★
- 1 client review
- 4
- Bar admissions
Practices in
Are you Brian Patrick O'Shaughnessy?
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Quick answer
Brian Patrick O'Shaughnessy is a shareholder based in Washington, DC. The practice focuses on IP and Litigation. Brian has over 40 years of legal experience. Currently practicing at RatnerPrestia A Professional Corporation. Rated 5.0 out of 5 from 1 client review.
- Based in
- Washington, DC
- Experience
- over 40 years
- Known for
- IP · Litigation
- Handles IP and Litigation matters from Washington, DC.
- Over 40 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Brian Patrick O'Shaughnessy: Brian Patrick O'Shaughnessy is a shareholder based in Washington, DC. The practice focuses on IP and Litigation. Brian has over 40 years of legal experience. Currently practicing at RatnerPrestia A Professional Corporation. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Legal matters Brian takes on
Brian concentrates on ip and litigation. Each area below outlines the kind of case Brian handles, typical outcomes to expect, and how the intake process starts.
IP cases in Washington, District of Columbia
Brian takes ip matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.
Litigation cases in Washington, District of Columbia
Brian takes litigation matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.
Biography
Meet Brian Patrick O'Shaughnessy — ip lawyer in Washington
Brian Patrick O'Shaughnessy is a shareholder based in Washington, DC. The practice focuses on IP and Litigation. Brian has over 40 years of legal experience. Currently practicing at RatnerPrestia A Professional Corporation. Rated 5.0 out of 5 from 1 client review.
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.
Brian's approach to ip cases
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.
Clients Brian works with
Brian reviews new inquiries case-by-case for ip and litigation matters in Washington and the surrounding District of Columbia area.
Credentials
Education, bar admissions, and languages
Syracuse University College of Law
J.D. · 1986
Rochester Institute of Technology
B.S.Ch. Rochester · 1981
Jurisdictions
Brian's state bar admissions
Virginia U.S. Distri
1998 · ACTIVE
District of Columbia
1993 · ACTIVE
North Carolina
1990 · ACTIVE
Illinois
1986 · ACTIVE
Brian studied at J.D. in Syracuse University College of Law and B.S.Ch. Rochester in Rochester Institute of Technology.
Law school and academic background
Brian completed J.D. in Syracuse University College of Law and B.S.Ch. Rochester in Rochester Institute of Technology. Formal legal training is one signal of substantive knowledge — the day-to-day practice Brian runs in District of Columbia is where that training gets applied to real client questions.
Recognition
Recognition and thought leadership
Brian has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Affiliations
Brian's professional memberships and bar associations
American Bar Association American Intellectual Property Law Association Licensing Executives Society
Board of Trustees · membership
Locations
Brian Patrick O'Shaughnessy's office in Washington
Brian's primary office is at 10th Fl., Ste. 1000, 1250 I St. N.W., Washington, DC, 20005. In-person meetings are by appointment; a phone intake usually comes first.
RatnerPrestia A Professional Corporation
10th Fl., Ste. 1000, 1250 I St. N.W.
Washington, DC 20005
Open in Google MapsClient feedback
Client reviews of Brian Patrick O'Shaughnessy — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Brian. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing ip attorneys in Washington.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Brian Patrick O'Shaughnessy claims this profile.
Read all reviewsHiring guide
How to hire Brian Patrick O'Shaughnessy — what to expect in your first consultation
Working with a new ip attorney should feel structured. Here's how the first two conversations with Brian usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Brian charges for the initial consult. That fee is credited toward representation if you retain Brian's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Brian will tell you what matters and what doesn't.
Questions to ask a ip attorney in Washington, District of Columbia
A short list to run through before you commit: How many ip matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Brian
Brian discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in ip practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every ip matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Brian confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Brian's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many ip practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Brian Patrick O'Shaughnessy
How much does it cost to hire Brian for a ip case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Brian walks through the likely range during the consult so there are no surprises.
Does Brian offer a free consultation?
Brian charges for the initial consult; that fee is credited toward representation if you retain Brian's office. Some ip attorneys offer free consults — check Brian's current terms during booking.
How long do ip cases in District of Columbia typically take?
Simple ip matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Brian gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Brian take my case if I'm outside Washington?
Brian is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Brian will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Brian?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Brian will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Brian accepting new ip clients right now?
Brian's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
IP attorneys serving Washington and Belize City in District of Columbia
Brian handles ip matters throughout District of Columbia. Each city below is a direct link into the search page for verified ip attorneys in that community.
More counsel
Other top-rated ip attorneys in District of Columbia
If Brian's intake is full or the fit isn't right, these ip attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.

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Cameron Hajaran Tousi
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Joseph John Bottiglieri
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David Franklin Freeman, Jr.
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Gregory S Smith
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