Atty. Marc J. Zwillinger

Atty. Marc J. Zwillinger

Marc J. Zwillinger is a lawyer practicing information security, internet, litigation and 1 other area of law.

Washington Washington 32 yrs experience 32 year
Call (404) 689-5892 Book Appointment

Profile Summary

About Marc J. Zwillinger at a glance

Marc J. Zwillinger is a Founding Partner based in Washington, District of Columbia, practicing at Zwillgen Pllc. They have 32+ years of legal experience, licensed to practice since 1994. Their practice focuses on ip, securities, litigation, and internet. Admitted to practice in Illinois (1994) and District of Columbia U.S. Court of Appeals, First, Third, Fourth, Fifth, Seventh, Ninth and Eleventh (1996). Educated at Harvard University (J.D., 1994) and Tufts University (B.A., 1991). Active member of Co-Chair, Subcommittee on Computer and High-Tech Crime, White Collar Crime Committee, 2000-2002, American Bar Association. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Marc J. Zwillinger is a lawyer practicing information security, internet, litigation and 1 other area of law
  • Marc received a B.A. degree from Tufts University in 1991, and has been licensed for 32 years
  • Marc practices at ZwillGen PLLC in Washington, DC

Practice Areas Explained

Marc J. Zwillinger's Areas of Practice

Each practice area below reflects the types of cases Marc J. Zwillinger handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Marc J. Zwillinger is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Securities Law

Marc J. Zwillinger is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in District of Columbia →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Marc J. Zwillinger is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Internet & Cyber Law

Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.

Marc J. Zwillinger is one of 17,958 internet attorneys indexed nationally. Browse internet attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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 andnue, 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.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Marc J. Zwillinger

Where is Marc J. Zwillinger's law office located?
Marc J. Zwillinger's law practice is located in Washington, District of Columbia. The firm is Zwillgen Pllc. You can contact the office directly through this profile page.
What practice areas does Marc J. Zwillinger handle?
Marc J. Zwillinger focuses on ip, securities, litigation, internet. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Marc J. Zwillinger practiced law?
Marc J. Zwillinger has 32+ years of legal experience and has been licensed since 1994.
Where did Marc J. Zwillinger go to law school?
Marc J. Zwillinger earned their education at (J.D., 1994); (B.A., 1991).
How can I contact Marc J. Zwillinger for a consultation?
You can contact Marc J. Zwillinger directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Harvard University
- 1994
B.A.
Tufts University
- 1991

Bar Admissions

Illinois
Admitted: 1994
District of Columbia U.S. Court of Appeals, First, Third, Fourth, Fifth, Seventh, Ninth and Eleventh
Admitted: 1996

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