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Finnegan
C. Gregory Gramenopoulos
Partner
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  • 901 New York Avenue, NW
  • Washington, DC 20001-4413
+1 202 408 4263
gramenoc@finnegan.com gramenoc@finnegan.com

C. Gregory Gramenopoulos

Partner

  • +1 202 408 4263 +1 202 408 4263
  • gramenoc@finnegan.com gramenoc@finnegan.com
  • 901 New York Avenue, NW
  • Washington, DC 20001-4413
  • vCard

C. Gregory Gramenopoulos, an attorney-at law and partner in Finnegan's Washington, D.C. office, has more than two decades of experience in intellectual property (IP) law. He advises emerging and high-technology companies in the software, computer, and artificial intelligence (AI)/machine learning (ML) sectors. An accomplished patent litigator and strategic IP advisor, Greg handles complex, high-stakes patent matters both in and outside of the courtroom. 

Recognized by The Legal500 U.S. and Intellectual Asset Management (IAM) Patent 1000, he is the lead author of the acclaimed international treatise, Global Patent Litigation: How and Where to Win, published by Bloomberg Law. He currently serves as co-chair of the Global Series Committee of the Federal Circuit Bar Association (FCBA). Additionally, Greg serves as the vice president and president elect of the National Section of International Federation of Intellectual Property Attorneys for the United States (FICPI-US) and is a member of the U.S. Bar–European Patent Office (EPO) Liaison Council of the American Intellectual Property Association (AIPLA).

 

Through his knowledge of both U.S. and international patent systems, Greg brings a unique global perspective to advising clients on worldwide filing, licensing, and enforcement strategies. He has successfully represented clients in U.S. district court litigation, Patent Trial and Appeal Board (PTAB) proceedings, and global patent disputes. His experience spans all aspects of patent litigation, including pre-filing investigations, fact and expert discovery, witness depositions, preliminary injunctions, claim construction, summary judgment motions, and pre-trial and trial hearings.

 

Over the course of his career, Greg has overseen the drafting and prosecution of hundreds of patent applications and has strategically assisted clients in building and managing their portfolios. He has served as lead IP advisor on numerous portfolio transactions, including the historic $1.056 billion patent deal between AOL and Microsoft, and he has guided clients through all deal phases—from strategic planning and negotiations to closing.

 

A frequent lecturer on U.S. intellectual property law, Greg has spoken before numerous Fortune 500 companies and organizations domestically as well as to various multinational companies and law firms throughout the world.

 

Et Cetera

  • Recipient of Leon Robbin Patent Award, 1995.

Experience

Finnegan assists AOL in achieving $1.056 billion patent deal

Assisted AOL in achieving a $1.056 billion patent deal with Microsoft, acting as lead IP advisor with respect to strategic planning, negotiations, and closing; the deal involved the sale of 800+ patents and a portfolio license.  Led the Finnegan prosecution team that worked closely with AOL to strategically build and strengthen its patent portfolio towards its monetization goals.

Trover Group, Inc. v. Axis Communications

Represented Axis in defense of patent suit relating to network video technologies.

2:13-cv-01047, E.D. Tex., Judges Bryson, Gilstrap
IPR2015-00432, PTAB, Judges Chen, Crumbley, Plenzler

Google Inc. v. CreateAds LLC

In response to litigations brought by CreateAds for a computerized “visual design” solutions patent, Google and Yahoo! asked Finnegan to file an inter partes review (IPR) petition to challenge the claims of the asserted patent. After limited discovery and twice rejecting CreateAds’ claim construction proposals, the Patent Trial and Appeal Board (PTAB) issued a final written decision finding all 20 claims unpatentable in view of the prior art and maintaining all seven instituted grounds advanced by the Finnegan team.

IPR2014-00200, PTAB, Judges Bisk, Boucher, Petravick

RPost Holdings, Inc. v. Swiss Post

Defended Swiss Post against claims of infringement by RPost regarding digital authentication patents.

2:10-cv-09880, C.D. Cal., Judges Klausner, Gandhi

Trade secret and breach of contract dispute resolved with favorable settlement for Finnegan client Moody's

Represented Moody’s in a trade secret and breach of contract dispute related to its loan pricing software, resulting in a successful settlement and capitulation by the opposing party on all terms.

Compression Vectors LLC v. Axis Communications AB

Lead counsel for petitioner Axis Communications AB in an inter partes review (IPR) petition and in district court related to video compression technology, resulting in settlement.

4:21-cv-00227, E.D. Tex., Judge Jordan
IPR2021-01143, PTAB, Judges Engels, McKone, Stephens

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Insights

Panel Discussion

Global Patent Strategies & Litigation: An Exclusive Off-the-Record Conversation with Experienced In-House Leaders Global Patent Strategies & Litigation: An Exclusive Off-the-Record Conversation with Experienced In-House Leaders

May 5, 2026

London

Conference

2nd AI & IP Forum 2nd AI & IP Forum

April 26, 2026

Munich

Webinar

The Quantum Leap: Patent Strategies for the Next Era of Computing, Communications, and Beyond

The Quantum Leap: Patent Strategies for the Next Era of Computing, Communications, and Beyond The Quantum Leap: Patent Strategies for the Next Era of Computing, Communications, and Beyond

March 18, 2026

Webinar

Conference

American Intellectual Property Law Association – Delegation to the United Arab Emirates American Intellectual Property Law Association – Delegation to the United Arab Emirates

February 8-12, 2026

Dubai

Seminar

Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Copenhagen

Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Copenhagen Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Copenhagen

November 6, 2025

Copenhagen

Seminar

Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Amsterdam

Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Amsterdam Adapting to Change: U.S. Patent Law Trends and Global Perspectives - Amsterdam

November 4, 2025

Amsterdam

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Professional Recognition

"Gramenopoulos is a top strategist and counsellor. He spent five years in the firm’s Brussels office and has built up an impressive roster of European-based clients."

Intellectual Asset Management Patent 1000

“Gramenopoulos excels as a strategic counsellor and licensing negotiator.”

Intellectual Asset Management Patent 1000

“In software, electronics and other high-technology spaces, Gramenopoulos distinguishes himself as a holistic global problem solver: he has prosecuted extensively, built valuable portfolios and advised lucidly on the most challenging infringement scenarios.”

Intellectual Asset Management Patent 1000

“‘Greg is exceptionally well qualified and a consummate professional who stands out for his reasonableness and integrity. It is a privilege to work with him,’ enthused clients.”

Intellectual Asset Management Patent 1000

“Among the best strategic counsellors is…leading light Gregory Gramenopoulos.”

Intellectual Asset Management Patent 1000

“Gramenopoulos also plays on the global stage and serves up perspicacious strategic prosecution and licensing counsel to many European and other high-tech clients…”

Intellectual Asset Management Patent 1000

“Gramenopoulos calls on significant European and international experience and is insightful on global protection matters.”

Intellectual Asset Management Patent 1000

"Gramenopoulos is a top strategist and counsellor. He spent five years in the firm’s Brussels office and has built up an impressive roster of European-based clients."

Intellectual Asset Management Patent 1000

“Gramenopoulos excels as a strategic counsellor and licensing negotiator.”

Intellectual Asset Management Patent 1000

“In software, electronics and other high-technology spaces, Gramenopoulos distinguishes himself as a holistic global problem solver: he has prosecuted extensively, built valuable portfolios and advised lucidly on the most challenging infringement scenarios.”

Intellectual Asset Management Patent 1000

“‘Greg is exceptionally well qualified and a consummate professional who stands out for his reasonableness and integrity. It is a privilege to work with him,’ enthused clients.”

Intellectual Asset Management Patent 1000

“Among the best strategic counsellors is…leading light Gregory Gramenopoulos.”

Intellectual Asset Management Patent 1000

“Gramenopoulos also plays on the global stage and serves up perspicacious strategic prosecution and licensing counsel to many European and other high-tech clients…”

Intellectual Asset Management Patent 1000

“Gramenopoulos calls on significant European and international experience and is insightful on global protection matters.”

Intellectual Asset Management Patent 1000

News

Award/Ranking

Finnegan Earns Top Rankings in 2026 IAM Patent 1000 Guide; Nearly 60 Attorneys Ranked Finnegan Earns Top Rankings in 2026 IAM Patent 1000 Guide; Nearly 60 Attorneys Ranked

May 28, 2026

Intellectual Asset Management (IAM)

Award/Ranking

50 Finnegan Attorneys Ranked in the 2025 IAM Patent 1000

50 Finnegan Attorneys Ranked in the 2025 IAM Patent 1000

June 2, 2025

Intellectual Asset Management (IAM)

Commentary

Finnegan Strengthens Its Commitment to the Growing Intellectual Property Market in Latin America Finnegan Strengthens Its Commitment to the Growing Intellectual Property Market in Latin America

January/June 2025

Marcasur International

Award/Ranking

46 Finnegan Attorneys Ranked in 2024 IAM Patent 1000

46 Finnegan Attorneys Ranked in 2024 IAM Patent 1000

June 6, 2024

Intellectual Asset Management (IAM)

Press Release

Finnegan Receives Top Rankings from Intellectual Asset Management; 46 Attorneys Ranked Finnegan Receives Top Rankings from Intellectual Asset Management; 46 Attorneys Ranked

June 30, 2023

Intellectual Asset Management (IAM)

Press Release

45 Finnegan Attorneys Recommended by Intellectual Asset Management; Firm Continues to Be Top Ranked 45 Finnegan Attorneys Recommended by Intellectual Asset Management; Firm Continues to Be Top Ranked

July 8, 2022

Intellectual Asset Management (IAM)
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Professional Activities

  • American Bar Association
  • American Intellectual Property Law Association
  • Eta Kappa Nu
  • Federal Circuit Bar Association
  • Federation Internationale des Conseils en Propriete Industrielle (FICPI) U.S. Section
  • Licensing Executives Society
Admissions and Education

Admissions

  • U.S. Patent and Trademark Office
  • District of Columbia
  • Virginia
  • U.S. Court of Appeals, Federal Circuit

Education

Georgetown University Law Center
J.D., 1995
George Mason University
B.S., Electrical Engineering, with honors, 1991

Greg's Practices

AI + Finnegan
AI + Patent
Diligence, Licensing, and Opinions
Licensing, Pooling, and Other Transactions
Opinions and Counseling
Global IP Enforcement, Litigation, and Trials
Patent Litigation and Trials
Pretrial Strategies
Patent Office Invalidation Proceedings
Ex Parte Reexamination (EPR)
PTAB Invalidation Proceedings: IPR and PGR
Prosecution and Portfolio Management
IP Portfolio Management
Patent Drafting and Prosecution

Greg's Industries

AI, Electronics, and Information Technology
Artificial Intelligence (AI) and Machine Learning (ML)
Electrical and Computer Technology
Electronic Devices and Components
Communications
Internet of Things (IoT)
Hospitality, Gaming, and Leisure
Gaming

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