Atty. Ellen S. Tao

Atty. Ellen S. Tao

Ellen S. Tao is a lawyer practicing intellectual property rights, patent prosecution, patent protection and 1 other area of law.

Washington Washington 31 yrs experience 31 year
Call (650) 517-0420 Book Appointment

Profile Summary

About Ellen S. Tao at a glance

Ellen S. Tao is a patent, trademark, and ip attorney based in Washington, District of Columbia. They have 31+ years of legal experience, licensed to practice since 1995. Admitted to practice in Illinois (1995) and District of Columbia registered to practice before U.S. Patent and Trademark Office (1997). Educated at Washington College of Law of American University (J.D., 1995) and Washington University, St. Louis (B.S. Chemical, 1992). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Ellen S. Tao is a lawyer practicing intellectual property rights, patent prosecution, patent protection and 1 other area of law
  • Ellen S. received a B.S. degree from Washington University, St. Louis in 1992, and has been licensed for 31 years
  • Ellen S. practices in Washington, DC

Practice Areas Explained

Ellen S. Tao's Areas of Practice

Each practice area below reflects the types of cases Ellen S. Tao handles, with a brief overview of what that area of law covers.

Patent Law

Ellen S. Tao is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in District of Columbia →

Trademark Law

Ellen S. Tao is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in District of Columbia →

Intellectual Property

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

Ellen S. Tao is one of 106,079 ip attorneys indexed nationally. Browse ip 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 Ellen S. Tao

Where is Ellen S. Tao's law office located?
Ellen S. Tao's law practice is located in Washington, District of Columbia. You can contact the office directly through this profile page.
What practice areas does Ellen S. Tao handle?
Ellen S. Tao focuses on patent, trademark, ip. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Ellen S. Tao practiced law?
Ellen S. Tao has 31+ years of legal experience and has been licensed since 1995.
Where did Ellen S. Tao go to law school?
Ellen S. Tao earned their education at (J.D., 1995); (B.S. Chemical, 1992).
How can I contact Ellen S. Tao for a consultation?
You can contact Ellen S. Tao 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.
Washington College of Law of American University
- 1995
B.S. Chemical
Washington University, St. Louis
- 1992

Bar Admissions

Illinois
Admitted: 1995
District of Columbia registered to practice before U.S. Patent and Trademark Office
Admitted: 1997

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