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Managing Partner: Erika Harmon Arner
Quick facts
Firm - Year of Establishment

1965

Total Number of IP Practitioners

350

Languages Spoken at the Firm

Arabic, Belarusian, Bengali, Chinese, Chinese (Mandarin), Chinese (Cantonese or Mandarin), Fang, Filipino, French, German, Hebrew, Hindi, Italian, Japanese, Korean, Luxembourgish, Malayalam, Marathi, Norwegian, Portuguese, Romanian, Russian, Spanish, Taiwanese (Hokkien), Tamil, Telugu, Urdu

Key practice areas
PTAB litigation
Life sciences IP
Copyright & related rights
Intellectual property
ITC litigation
Patent disputes
Trade mark disputes
Trade mark
Patent
Patent prosecution
Trade mark prosecution
IP transactions
Dispute resolution
Federal Circuit
Firm overview

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP is one of the world’s largest full-service IP firms. With offices in the United States, Asia and Europe, the firm practices European, German, UK, and US IP law. In addition to all aspects of patent, trademark, and copyright law, including counseling, prosecution, licensing, and litigation, Finnegan provides counseling and litigation services in advertising, privacy, and a wide spectrum of additional IP-adjacent commercial matters, including trade secrets, international trade, the Internet, e-commerce, government contracts, antitrust, and unfair competition. A comprehensive approach to clients’ IP needs and Finnegan’s mega-boutique size underpins its year-to-year, decade-to-decade preeminence in IP litigation and trials across all industries and tribunals.

With Finnegan’s practice centered on intellectual property, the firm can create economies of scale and focus all resources on providing the best tools and teams for clients. Approximately 300 of Finnegan’s legal professionals hold degrees in scientific disciplines (75+ hold PhDs), and the majority are also registered to practise before the US Patent and Trademark Office (USPTO), European Patent Office (EPO), the German Patent and Trade Mark Office (DPMA), the UK Intellectual Property Office (UKIPO), or the European Union Intellectual Property Office (EUIPO).

With more than 60 years’ IP experience, Finnegan’s global IP enforcement, litigation, and trials practice is comprised of over 250 litigators, including career trial attorneys. The firm handles hundreds of cases and proceedings across all forms of US IP litigation, German patent litigation, and European patent, trademark, copyright, and trade secret litigation in courts, including US district courts, the US International Trade Commission (ITC), the USPTO’s Patent Trial and Appeal Board (PTAB), US Court of Appeals for the Federal Circuit, the US Supreme Court, German regional civil courts, UK courts, and the Unified Patent Court. As one of the first firms to file a petition and subsequently argue a post-grant review of a covered business method case following the implementation of the America Invents Act, Finnegan is one of the busiest law firms representing petitioners and patent owners in patent office invalidity proceedings in the U.S. and Europe, including ex parte reexaminations, inter partes and post-grant reviews, nullity proceedings, oppositions, and third-party observations. The firm files approximately 2,500 US and 1,000 foreign patent applications annually.

Finnegan’s trademark practice, renowned for its experience, sophistication, creativity and depth, is comprehensive and follows the life of a mark from selection, clearance, prosecution and maintenance to portfolio management, trademark audits, licensing, watch disputes and litigation. The firm’s trademark clients include start-ups, small and medium-sized companies, as well as Fortune 100 companies. The range of industries represented includes sports and fitness, food and beverage, consumer products, mechanical, manufacturing, clean energy and renewables, entertainment, pharmaceuticals and biotechnology, financial services, publishing, the Internet, software, computers and telecommunications, and automotive.

Surveys conducted by legal and business publications consistently rank Finnegan as one of the leading IP law practices in the world. The firm is ranked in the United States for litigation and non-contentious patent and trademark work by publications including Managing Intellectual Property and The Legal 500, which have ranked Finnegan as a top-tier firm in nearly every significant IP category for nearly two decades. The publications cite the firm’s winning record, technical expertise and deep bench of talent in all aspects of IP litigation, including trials, appeals and proceedings at global patent offices, and ITC investigations.

Representative engagements

•  
 Obtained a $240 million jury verdict for client Promptu in a patent infringement lawsuit against Comcast. The jury found that Comcast willfully infringed Promptu’s patents covering voice recognition technology for TV. 

•    Secured a significant victory for client US Synthetic Corporation (USS) with a precedential decision from the U.S. Court of Appeals for the Federal Circuit (CAFC) overturning an unfavorable 35 U.S.C. § 101 eligibility ruling from the International Trade Commission (ITC).

•    Finnegan represents Subaru in multiple ongoing TTAB proceedings, including cancellations and oppositions.

•    Represented Sarepta Therapeutics, Inc. and its licensor The University of Western Australia in patent litigation relating to nucleic acid therapies for treatment of Duchenne muscular dystrophy (DMD). A federal jury in the District of Delaware awarded Sarepta Therapeutics over $115 million in its patent infringement case against Nippon Shinyaku Co. Ltd. This substantial verdict upholds the validity of Sarepta’s groundbreaking exon-skipping treatment, and the underlying work at the University of Western Australia.

•    Oversees the comprehensive trademark and copyright portfolio for the EMMY and EMMY Award Statuettes on behalf of The Academy of Television Arts & Sciences, handling all aspects of prosecution and enforcement. This work includes negotiating and drafting license agreements with authorized statuette manufacturers and sponsors, collaborating with Customs and Border Protection to prevent unauthorized imports, conducting due diligence on potential international partners, and managing U.S. and foreign trademark applications, prosecution, and oppositions.

•    Managing the global prosecution of AstraZeneca’s portfolio for Beyfortus® (nirsevimab), the recently FDA-approved extended half-life monoclonal antibody (mAb) aiming to protect all infants entering their first RSV season, when they are at highest risk for severe RSV disease.

Practice Areas & Sector Specialisations

Key IP Areas

Global IP Enforcement, Litigation, and Trials; Patent Office Invalidation Proceedings; Prosecution and Portfolio Management; Trademark Litigation; PTAB Litigation; Diligence, Licensing, and Opinions; Federal Circuit and Supreme Court Appeals; ITC Litigation; Design Rights; Copyright

Key Sector Expertise

Aerospace, Advertising, Aerospace, Agriculture, Artificial intelligence, Automotive, Biotechnology, Chemical, Computer technology & services, Construction & materials, Defence, E-commerce, Electrical, Electronics, Fashion & luxury goods, Financial services, FMCG, Food & beverage, Gaming, Hospitality & leisure, ICT & software, Industrials, Instruments, Internet, Life sciences, Logistics, Manufacturing, Mechanical, Media, Medical device, Mining, Nanotechnology, Not-for-profit, Oil & gas, Optics & photonics, Pharmaceutical, Publishing, Renewable energy, Retail, Robotics, Semiconductors, Sports, Technology hardware, Telecommunication, Tobacco

Address:
901 New York Avenue, NW
Washington, DC 20001
Tel:+1 202 408 4000 Email:Contact Us Web Address:http://www.finnegan.com
2026 Edition
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Overview

Finnegan Henderson Farabow Garrett & Dunner is a true full-service IP firm with experts in every area of IP. The firm practices in all aspects of patent, trademark, and copyright law, including counseling, prosecution, licensing, and litigation. With offices around the world and decades of experience assisting multinational companies, Finnegan has the resources and expertise to formulate and execute global strategies.

Notable patent practitioners: Erika Arner, James Barney, Jennifer Roscetti, Bryan Diner, David Weingarten, John Livingstone, Gerald Ivey, Elizabeth Ferrill, Li Feng

Notable trademark practitioners: Danny Awdeh, Douglas Rettew, Naresh Kilaru, Mark Sommers, Brett Heavner

Notable copyright practitioners: Anna Chauvet

Roscetti litigates before US district courts and the US International Trade Commission (ITC). She also represents clients before the Federal Circuit. Naresh Kilaru counsels clients on brand protection and trademark enforcement strategies in the United States and around the world.

Testimonials

2026

"Finnegan is very sophisticated and has significant experience with trademark litigation and their work product is thorough and well written. They offer practical advice that understands our business and goals but are also fierce advocates."

"Great knowledge of our products and significant experience defending our IP."

"Great knowledge of our products and development processes. Great advice and responsiveness to our needs."

"I value working with the Finnegan team on our patent matters because they are consistently responsive, well prepared, and highly detail‑oriented. They anticipate issues, communicate clearly and promptly, and deliver thoughtful, carefully drafted work product that reflects a strong understanding of both the legal landscape and our business objectives. Their reliability and attention to detail give me confidence that matters are being handled efficiently and at a high level of quality."

"I value Finnegan’s IP advisory services because the team provides practical, business‑focused guidance that is thoughtful, well prepared, and highly responsive. They take the time to understand our technologies, risk tolerance, and commercial objectives, and they translate complex IP issues into clear, actionable advice. Their attention to detail and ability to anticipate downstream risks make them a trusted partner for strategic IP counseling beyond day‑to‑day prosecution."

"They understand the complex technology area we operate in. The work product is high quality. The team is responsive to our concerns. From the various firms we use in the US and internationally, Finnegan is my top choice."

"Very professional, technically knowledgeable and responsive."

Doug Rettew

"Doug is very business savvy - he understands our goals and helps us navigate the legal system in an efficient way to reach our goals.  He does not simply litigate to litigate, but if we do have to litigate, he is a fierce advocate."

Jeff Freeman

"I value working with Jeff Freeman because he is consistently responsive, well prepared, and thoughtful in his approach to complex IP issues. He takes the time to understand the technical and business context, anticipates issues before they become problems, and communicates clearly and efficiently. His attention to detail and practical judgment make him a reliable partner for navigating both strategic and day‑to‑day IP matters."

Aaron Capron

"He's an excellent outside counsel to work with. He's responsive and understands our business needs."

 

2025

"Extremely knowledgeable lawyers who can explain complex legal issues simply and provide good strategic advice."

"Clear advice, deep legal and technical knowledge."

"Incredibly smart, innovative, creative, and savvy critically thinking lawyers with a wealth of experience."

They are committed to excellence. Finnegan delivers complex analysis and always provides timely and accurate information and advice. They strive to be pragmatic and professional legal partners, and help us to achieve our business goals."

"I appreciate Finnegan's IP team for their responsiveness, as they consistently address our concerns and questions promptly. Their extensive knowledge in various patent matters ensures that we receive well-informed and accurate advice. Additionally, they are highly efficient, making work smoother and more streamlined for us."

 

Linked Reviews
Trade mark

Finnegan has been retained to handle Biogen’s global counseling matters, trademark clearances and filings, and enforcement-related disputes. The firm is also working with Birkenstock on securing and enforcing rights in the designs and configurations of its iconic and popular footwear.

Patent

Finnegan is representing AbbVie and Novartis in Patent infringement cases. Patent case studies also show the firm dealt with drafting, prosecution for AstraZeneca, GlycoMimetics, and GSK.

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Practitioners believe new AI tools at the USPTO will not replace lawyers or disrupt revenue, but instead expose where a trademark attorney’s value lies
Jacob Schroeder and Gerald Ivey explain how their team secured victory for Promptu in a long-running patent infringement battle with Comcast
Varuni Paranavitane of Finnegan and IP counsel Lisa Ribes compare and contrast two recent AI copyright decisions from Germany and the UK
Mary Till says she has been helping clients navigate policy questions, including staffing concerns at the office
Counsel explain what kind of ITC-related inquiries they’re getting from clients and why complaints at the forum were up in 2024
Firms reflect on how they’re managing their design patent practices as brands seek to enforce their rights at the Northern District of Illinois and beyond
US sources say they’ve had positive experiences working with Coke Morgan Stewart, and that her past experience at the office means there'll be no nasty surprises
An injunction concerning head lice treatment, a positive ruling on access to documents, a German firm splitting, and moves involving Finnegan and Morgan Lewis were among the top stories
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