Patent Prosecution & More Attorney · Serving Washington, DC · 36+ Years Experience
Profile Summary
About Mark A. Williamson at a Glance
Mark A. Williamson is a Partner based in Washington, District of Columbia, practicing at Fitzpatrick, Cella, Harper & Scinto. They have 36+ years of legal experience, licensed to practice since 1990. Their practice focuses on patent. Admitted to practice in Pennsylvania (1990) and District of Columbia U.S. Patent and Trademark Office (1992). Educated at Georgetown University Law Center (J.D., 1990) and Drexel University (B.S. Mechanical, 1985). Active member of District of Columbia Bar (Member, Patent, Trademark and Copyright Section Vice-chair, Patent Committee, Intellectual Property Law Section) Bar Association of the District of Columbia American Intellectual Property Law Association. Serves clients in Washington, DC and the surrounding metropolitan area.
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About Mark A. Williamson
- Mr. Mark A. Williamson is a lawyer practicing patent prosecution, pto contested proceedings
- Mark received a B.S. degree from Drexel University in 1985, and has been licensed for 36 years
- Mark practices at Fitzpatrick, Cella, Harper & Scinto in Washington, DC
Practice Areas Explained
Mark A. Williamson's Areas of Legal Practice
Each practice area below reflects the types of cases Mark A. Williamson handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.
Patent Law in Washington
Mark A. Williamson is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in District of Columbia →
Jurisdictional Context
Why Local Counsel Matters in Washington
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 venue, 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.
Washington Courts and Legal Process
Choosing a Washington-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
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Professional Profile
Why Clients in Washington Choose Mark A. Williamson
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark A. Williamson's practice in the field of patent.
Decade-Tested Legal Experience
Mark A. Williamson brings 36+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Pennsylvania and District of Columbia U.S. Patent and Trademark Office, Mark A. Williamson can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Focused Patent Practice
Concentrating on patent means Mark A. Williamson's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.
Local Presence in Washington
A Washington-based practice means Mark A. Williamson attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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Mark A. Williamson's Practice Areas & Specializations
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