John Gibson Semmes, IP Attorney in Potomac, Maryland
Over 77 years of legal practice · focused on IP, IP Licensing, and Real Estate · 5.0/5 rating from 1 verified client review
Hall & Vande SandeOf Counsel, LLC
Potomac, MD
Practicing ip in Potomac since 1949.
- 77+
- Years practicing
- 5.0 ★
- 1 client review
- 5
- Bar admissions
Practices in
Are you John Gibson Semmes?
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Quick answer
John Gibson Semmes is an attorney based in Potomac, MD. The practice focuses on IP, IP Licensing, and Real Estate. John has over 77 years of legal experience. Currently practicing at Hall & Vande SandeOf Counsel, LLC. Rated 5.0 out of 5 from 1 client review.
- Based in
- Potomac, MD
- Experience
- over 77 years
- Known for
- IP · IP Licensing · Real Estate
- Handles IP, IP Licensing, and Real Estate matters from Potomac, MD.
- Over 77 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About John Gibson Semmes: John Gibson Semmes is an attorney based in Potomac, MD. The practice focuses on IP, IP Licensing, and Real Estate. John has over 77 years of legal experience. Currently practicing at Hall & Vande SandeOf Counsel, LLC. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Practice areas handled by John Gibson Semmes
John concentrates on ip, ip licensing, and real estate. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.
IP
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IP Licensing
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Real Estate
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IP cases in Potomac, Maryland
John takes ip matters in Potomac, Maryland. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
IP Licensing cases in Potomac, Maryland
John takes ip licensing matters in Potomac, Maryland. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Real Estate cases in Potomac, Maryland
John takes real estate matters in Potomac, Maryland. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Biography
About John Gibson Semmes — Over 77 years of Maryland ip experience
John Gibson Semmes is an attorney based in Potomac, MD. The practice focuses on IP, IP Licensing, and Real Estate. John has over 77 years of legal experience. Currently practicing at Hall & Vande SandeOf Counsel, LLC. Rated 5.0 out of 5 from 1 client review.
John Gibson Semmes is a lawyer practicing intellectual property law, intellectual property licensing. John Gibson has been licensed for 77 years. John Gibson practices at Hall & Vande SandeOf Counsel, LLC in Potomac, MD.
How John handles ip matters
John Gibson Semmes is a lawyer practicing intellectual property law, intellectual property licensing. John Gibson has been licensed for 77 years. John Gibson practices at Hall & Vande SandeOf Counsel, LLC in Potomac, MD.
Who John represents
John reviews new inquiries case-by-case for ip, ip licensing, and real estate matters in Potomac and the surrounding Maryland area.
Credentials
John Gibson Semmes's legal education and bar admissions
George Washington University
J.D. · 1949
Jurisdictions
John's state bar admissions
U.S. Court of Appeal
1982 · ACTIVE
U.S. Supreme Court
1956 · ACTIVE
U.S. Court of Milita
1954 · ACTIVE
Maryland
1954 · ACTIVE
District of Columbia
1949 · ACTIVE
John studied at J.D. in George Washington University.
Law school and academic background
John completed J.D. in George Washington University. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in Maryland is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of John Gibson Semmes
John has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Affiliations
John's professional memberships and bar associations
Bar Association of the District of Columbia Maryland State Bar Association American Patent Law Association
Treasurer, 1961 · membership
Locations
John Gibson Semmes's office in Potomac
John's primary office is at 10220 River Road, Suite 200, Potomac, MD, 20854. In-person meetings are by appointment; a phone intake usually comes first.
Hall & Vande SandeOf Counsel, LLC
10220 River Road, Suite 200
Potomac, MD 20854
Open in Google MapsClient feedback
Client reviews of John Gibson Semmes — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of John. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing ip attorneys in Potomac.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once John Gibson Semmes claims this profile.
Read all reviewsHiring guide
How to hire John Gibson Semmes — what to expect in your first consultation
Working with a new ip attorney should feel structured. Here's how the first two conversations with John usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
John charges for the initial consult. That fee is credited toward representation if you retain John'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; John will tell you what matters and what doesn't.
Questions to ask a ip attorney in Potomac, Maryland
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 John
John 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. John confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
John'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 John Gibson Semmes
How much does it cost to hire John for a ip case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. John walks through the likely range during the consult so there are no surprises.
Does John offer a free consultation?
John charges for the initial consult; that fee is credited toward representation if you retain John's office. Some ip attorneys offer free consults — check John's current terms during booking.
How long do ip cases in Maryland 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. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can John take my case if I'm outside Potomac?
John is licensed in Maryland. Matters governed by Maryland law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — John 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 John?
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. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is John accepting new ip clients right now?
John'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 Potomac, Baltimore and Annapolis in Maryland
John handles ip matters throughout Maryland. 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 Maryland
If John's intake is full or the fit isn't right, these ip attorneys in Potomac handle similar matters. Every profile below is verified and open to consultations.





