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Finnegan, Henderson, Farabow, Garrett & Dunner

American international intellectual property firm

Finnegan, Henderson, Farabow, Garrett & Dunner LLP, commonly known as Finnegan, is an American multinational law firm based in Washington, D.C. that specializes in intellectual property law. Finnegan was founded on March 1, 1965, by Marc Finnegan and Douglas Henderson in Washington, DC. It is one of the largest law firms that focuses exclusively on the practice of intellectual property law, practicing all aspects of patent, trademark, copyright, and trade secret law, including counseling, prosecution, licensing, and litigation.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Mar 1, 1965Founded1
  • HeadquartersWashington, D.C.1
  • Websitewww.finnegan.com
  • Legal formLimited Liability Partnership3
  • Kind of organizationLimited liability partnership1
  • LEI5493000JK8EP7N3EG8133
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressC/O C T Corporation System, 20005 Washington, United States3
  • Registered withDepartment of Consumer and Regulatory Affairs, 9400323

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Finnegan, Henderson, Farabow, Garrett & Dunner LLP, commonly known as Finnegan, is an American multinational law firm based in Washington, D.C. that specializes in intellectual property law. Finnegan was founded on March 1, 1965, by Marc Finnegan and Douglas Henderson in Washington, DC. It is one of the largest law firms that focuses exclusively on the practice of intellectual property law, practicing all aspects of patent, trademark, copyright, and trade secret law, including counseling, prosecution, licensing, and litigation. Finnegan (known as Finnegan Europe LLP in the United Kingdom and the Fei Han Foreign Affairs Law Firm in Taiwan), also represents clients on IP issues related to U.S. and European patents and trademarks, international trade, portfolio management, the Internet, e-commerce, government contracts, antitrust, and unfair competition.2

Corporate structure

Finnegan, Henderson, Farabow, Garrett & Dunner sits at the top of its group. 2 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Finnegan, Henderson, Farabow, Garrett & Dunner Washington, the District of Columbia, United States
    • FINNEGAN EUROPE LLP Subsidiary ยท London, United Kingdom

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0). Each entity in the chart links to its source.

Timeline

  1. Mar 1, 1965Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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