#1Amy Loch Ressing
Based in MD
Patent Attorneys & Agents in Calvert County, MD
The top-ranked patent attorneys and agents serving Calvert County, MD are Amy Loch Ressing, Fred O. Ferris III and Isaac B. Ostlund. We list 228 patent attorneys and agents serving Calvert County, MD. 30 of the providers shown match an active record from U.S. Patent and Trademark Office, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Patent Attorneys & Agents serving Calvert County, MD. 228 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked patent attorneys and agents for Calvert County
#2Fred O. Ferris III
Based in MD#3Isaac B. Ostlund
Based in Dunkirk, MD#4John T Whelan (Bayside Law)
Based in MD#5Lissi M Mojica (Answers IP, LLC)
Based in MD#6Martin Abramson (Edell, Shapiro & Finnan, LLC)
Based in MD#7Michael Horabik
Based in Huntingtown, MD#8Robert D Jones
Based in MD#9Steven R Garland
Based in MD#10Thomas M Isaacson (Polsinelli)
Based in Dunkirk, MD
20 more providers serving this area
- William Korst King, MD
- W. Michael Cooper, MD
- Janet M Kerr, Taylors Island, MD (13 mi)
- Karl D Frech, MD
- Timothy P Monaghan, MD
- Yeseul Park, MD
- Ronald B Cox, MD
- Charles D Buskey (Department of Navy-Navair, NAWC-AD), MD
- Mark O Glut (Department of Navy- Navair, NAWC-AD), MD
- Rohit K Dewan (Department of Navy), MD
- Timothy R. Pyzik Jr. (NAVAIR Office of General Counsel), MD
- John D Moore, Cedarville, MD (19 mi)
- Andrew H Metz, Deale, MD (19 mi)
- Roberto Raul Gonzalez, MD
- Stephen Gucker, MD
- Verlene Jeanette Grier, MD
- Alonzo Barber, Waldorf, MD (21 mi)
- Alun L Palmer, Waldorf, MD (21 mi)
- Robert D. Harlan Sr. (Law Office of Robert D. Harlan LLC), Waldorf, MD (21 mi)
- Ron Billi, Waldorf, MD (21 mi)
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Frequently asked questions
How many patent attorneys and agents serve Calvert County?
We list 228 patent attorneys and agents serving Calvert County, MD: 11 based there and 217 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which patent attorneys and agents serve Calvert County?
The top-ranked patent attorneys and agents serving Calvert County, MD are Amy Loch Ressing, Fred O. Ferris III, Isaac B. Ostlund, John T Whelan (Bayside Law) and Lissi M Mojica (Answers IP, LLC). The full ranked list, with the official records each provider matched, is on this page.
Which patent attorneys and agents serving Calvert County are verified against official records?
10 of the top 10 match an active official record: Amy Loch Ressing (U.S. Patent and Trademark Office), Fred O. Ferris III (U.S. Patent and Trademark Office), Isaac B. Ostlund (U.S. Patent and Trademark Office), John T Whelan (Bayside Law) (U.S. Patent and Trademark Office) and Lissi M Mojica (Answers IP, LLC) (U.S. Patent and Trademark Office), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What is the difference between a patent attorney and a patent agent?
Both are registered with the USPTO to prepare and prosecute patent applications. Patent attorneys are also licensed lawyers and can handle litigation and other legal matters; agents cannot.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Chesapeake Ranch Estates, Chesapeake Beach, Huntingtown, Prince Frederick, Solomons, Drum Point, Dunkirk, North Beach, Owings, Lusby, Long Beach, Calvert Beach, St. Leonard, Broomes Island