Finnegan, Henderson, Farabow, Garrett & Dunner

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP: Professional Summary

Date: 2026-05-01

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP is a premier intellectual property law boutique and one of the largest firms in the world with an exclusive focus on IP. Headquartered in Washington, D.C., the firm maintains a global presence with eleven offices across the United States, Europe, and Asia. Finnegan is consistently recognized as a top-tier firm for intellectual property; Best Lawyers named it "Law Firm of the Year" for Patent Law in its 2026 rankings, and it holds National Tier 1 rankings for patent litigation. Managing Intellectual Property and Chambers and Partners also regularly place the firm in their highest bands for patent disputes and litigation.

The firm’s patent litigation practice covers virtually all technology sectors, including automotive, life sciences, electronics, and software. The tracked case list shows the firm representing defendant Audi of America in WirelessWerx IP LLC v. Audi Of America LLC, a matter involving geofencing technology where the firm secured a dismissal by invalidating the asserted patent. While the provided data shows a defense-side appearance for an operating company, the firm's broader practice includes representing both plaintiffs and defendants. In a notable plaintiff-side outcome, Finnegan secured a $240 million willful infringement verdict for Promptu against Comcast in January 2026, related to voice-recognition technology for television.

Finnegan has a formidable practice before the Patent Trial and Appeal Board (PTAB), where it is consistently ranked as one of the most active firms representing both petitioners and patent owners in inter partes reviews (IPRs) and other post-grant proceedings. This proficiency was evident in the Promptu v. Comcast litigation, where Finnegan successfully defeated Comcast's IPR challenges at the PTAB prior to achieving the favorable jury verdict. The firm's deep bench of over 250 litigators includes many with advanced technical degrees, positioning them for complex, high-stakes disputes across all major patent venues.

Key partners in the firm’s leadership include Firm Chair Erika Harmon Arner and Managing Partner James R. Barney, effective July 2025. The attorneys listed in the provided case data, Michael J. McKeon and Sherry (Hanhui) Li, are also part of the firm's litigation practice. Public records indicate Michael J. McKeon is now a principal at Fish & Richardson. Sherry (Hanhui) Li is an associate at Finnegan whose practice focuses on patent litigation in high-technology areas such as AI, software, and semiconductors.