Atty. Constantin Gregory Gramenopoulos

Atty. Constantin Gregory Gramenopoulos

Mr. Constantin Gregory Gramenopoulos is a lawyer practicing patents, patent litigation, patent licensing and 3 other areas of law.

Washington Washington 31 yrs experience 31 year
Call (202) 770-4377 Book Appointment

Profile Summary

About Constantin Gregory Gramenopoulos at a glance

Constantin Gregory Gramenopoulos is a Partner based in Washington, District of Columbia, practicing at Finnegan Henderson Farabow Garrett And Dunner L L P. They have 31+ years of legal experience, licensed to practice since 1995. Their practice focuses on patent and ip. Admitted to practice in Virginia (1995) and District of Columbia registered to practice before U.S. Patent and Trademark Office (1997). Educated at Georgetown University (J.D., 1995) and George Mason University (B.S.E.E., 1991). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Constantin Gregory Gramenopoulos is a lawyer practicing patents, patent litigation, patent licensing and 3 other areas of law
  • Constantin received a B.S.E.E. degree from George Mason University in 1991, and has been licensed for 31 years
  • Constantin practices at Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. in Washington, DC

Practice Areas Explained

Constantin Gregory Gramenopoulos's Areas of Practice

Each practice area below reflects the types of cases Constantin Gregory Gramenopoulos handles, with a brief overview of what that area of law covers.

Patent Law

Constantin Gregory Gramenopoulos is one of 20,749 patent attorneys indexed nationally. Browse patent 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.

Constantin Gregory Gramenopoulos 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 Constantin Gregory Gramenopoulos

Where is Constantin Gregory Gramenopoulos's law office located?
Constantin Gregory Gramenopoulos's law practice is located in Washington, District of Columbia. The firm is Finnegan Henderson Farabow Garrett And Dunner L L P. You can contact the office directly through this profile page.
What practice areas does Constantin Gregory Gramenopoulos handle?
Constantin Gregory Gramenopoulos focuses on patent, ip. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Constantin Gregory Gramenopoulos practiced law?
Constantin Gregory Gramenopoulos has 31+ years of legal experience and has been licensed since 1995.
Where did Constantin Gregory Gramenopoulos go to law school?
Constantin Gregory Gramenopoulos earned their education at (J.D., 1995); (B.S.E.E., 1991).
How can I contact Constantin Gregory Gramenopoulos for a consultation?
You can contact Constantin Gregory Gramenopoulos 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.
Georgetown University
- 1995
B.S.E.E.
George Mason University
- 1991

Bar Admissions

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

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