Atty. Will E. Leonard
Will E. Leonard is a lawyer practicing international trade, customs law, government relations and 2 other areas of law.
Customs Law & More Attorney · Serving Washington, DC · 68+ Years Experience
Profile Summary
About Will E. Leonard at a Glance
Will E. Leonard is a Partner based in Washington, District of Columbia, practicing at Adduci, Mastriani & Schaumberg, L.L.P.. They have 68+ years of legal experience, licensed to practice since 1958. Their practice focuses on ip, government, and international. Admitted to practice in Louisiana (1958) and District of Columbia U.S. Court of International Trade U.S. Court of Appeals for the Federal Circuit (1963). Educated at Harvard University LL.M. Tulane University LL.B. (—) and Tulane University B.A. (—). Recognitions include AV Preeminent. Active member of Memberships •District of Columbia Bar •Louisiana State Bar Association •American Bar Association (Former Chairman, Standing Committee on Customs Law. Serves clients in Washington, DC and the surrounding metropolitan area.
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About Will E. Leonard
- Will E. Leonard is a lawyer practicing international trade, customs law, government relations and 2 other areas of law
- Will E. received a B.A. degree from Tulane University, and has been licensed for 68 years
- Will E. practices at Adduci, Mastriani & Schaumberg, L.L.P. in Washington, DC
Practice Areas Explained
Will E. Leonard's Areas of Legal Practice
Each practice area below reflects the types of cases Will E. Leonard handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.
Intellectual Property in Washington
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Will E. Leonard is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →
Government & Administrative Law in Washington
Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.
Will E. Leonard is one of 131,162 government attorneys indexed nationally. Browse government attorneys in District of Columbia →
International Law in Washington
International law attorneys for cross-border transactions, trade, foreign investment, and treaties.
Will E. Leonard is one of 39,787 international attorneys indexed nationally. Browse international 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.
Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.
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Professional Profile
Why Clients in Washington Choose Will E. Leonard
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 Will E. Leonard's practice in the field of ip, government, and international.
Decade-Tested Legal Experience
Will E. Leonard brings 68+ 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 Louisiana and District of Columbia U.S. Court of International Trade U.S. Court of Appeals for the Federal Circuit, Will E. Leonard can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering ip, government, and international, Will E. Leonard can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Washington
A Washington-based practice means Will E. Leonard attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Will E. Leonard Handles in Washington
Below is a representative sample of the types of matters Will E. Leonard has experience with under District of Columbia law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Will E. Leonard directly to discuss the specifics of your situation.
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How People Find Will E. Leonard Online
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Will E. Leonard's Practice Areas & Specializations
Education & Law School Background
Awards & Professional Honors
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