Atty. Mark J. Diskin
Mark J. Diskin has over 38 years of legal experience.
Federal Tax Law & More Attorney · Serving Washington, DC · 46+ Years Experience
Profile Summary
About Mark J. Diskin at a Glance
Mark J. Diskin is an Attorney based in Washington, District of Columbia, practicing at Exempt Tax Law, PLLC. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on trademark, copyright, and tax. Admitted to practice in District of Columbia (1980), Maryland (1986), and Missouri Virginia (1994). Educated at George Washington University National Law Center (J.D., 1980) and University of Michigan (B.A., 1976). Active member of The District of Columbia Bar Maryland State Bar Association. Serves clients in Washington, DC and the surrounding metropolitan area.
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About Mark J. Diskin
- Mark J. Diskin has over 38 years of legal experience
- He provides legal services to nonprofit organizations in a variety of areas
- He provides advice concerning federal tax issues for public charities, private foundations, social welfare organizations and trade associations
- He provides advice on forming new tax-exempt organizations, obtaining and maintaining recognition of federal tax-exempt status, lobbying limits, executive compensation arrangements, unrelated business income issues, and issues related to private inurement, private benefit, self-dealing and excess benefit transactions
- He provides counsel concerning donor advised funds and restricted gifts and endowments governed by the Uniform Prudent Management of Institutional Funds Act (UPMIFA)
- He advises nonprofit organizations in regard to charitable contributions, real estate donations, bargain sale arrangements and planned giving techniques such as charitable remainder trusts and charitable gift annuities
- He prepares corporate governance policies such as records retention policies, accountable reimbursement plans, “whistle blower” protection policies and conflict of interest policies
- He represents tax-exempt organizations in IRS audits and administrative appeals of adverse audit findings
- He provides advice related to registration of trademarks and service marks, trademark license agreements and assignments of trademarks
Practice Areas Explained
Mark J. Diskin's Areas of Legal Practice
Each practice area below reflects the types of cases Mark J. Diskin handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.
Trademark Law in Washington
Mark J. Diskin is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in District of Columbia →
Copyright Law in Washington
Mark J. Diskin is one of 17,404 copyright attorneys indexed nationally. Browse copyright attorneys in District of Columbia →
Tax Law in Washington
Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.
Mark J. Diskin is one of 84,606 tax attorneys indexed nationally. Browse tax 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 Mark J. Diskin
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 J. Diskin's practice in the field of trademark, copyright, and tax.
Decade-Tested Legal Experience
Mark J. Diskin brings 46+ 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 District of Columbia, Maryland, and Missouri Virginia, Mark J. Diskin can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering trademark, copyright, and tax, Mark J. Diskin 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 Mark J. Diskin 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 Mark J. Diskin Handles in Washington
Below is a representative sample of the types of matters Mark J. Diskin 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 Mark J. Diskin directly to discuss the specifics of your situation.
Search Reference
How People Find Mark J. Diskin Online
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Mark J. Diskin's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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