You can find us in North America in , , , , , and ; our European offices are in and ; and our Asian offices are in , , , and .
1965
1965
The firm Finnegan & Henderson is founded on the 12th floor of the Chanin Building at 815 Connecticut Avenue in Washington, DC, by Marcus Finnegan and Douglas Henderson. The mission: to do high-quality legal work focused exclusively on intellectual property law.
325+
325+
professionals focused on intellectual property, plus approximately 350 support staff, including legal assistants, and docketing, research, litigation support, and information technology specialists
220+
220+
professionals registered to practice before the USPTO
Media Mention
Finnegan Opens First Texas Office with ‘Two Leaders with Genuine Local Roots'
September 7, 2026
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