Kenyon & Kenyon

Note: The law firm Kenyon & Kenyon LLP, a historic intellectual property boutique, ceased independent operations in September 2016. At that time, 55 of the firm's attorneys joined the law firm Andrews Kurth, which was subsequently known as Andrews Kurth Kenyon LLP. In 2018, that firm merged with Hunton & Williams to become Hunton Andrews Kurth LLP. The following summary is based on the firm's status and public record prior to its dissolution.

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Kenyon & Kenyon LLP was a prominent intellectual property specialty law firm founded in New York in 1879. Prior to its dissolution, the firm was a mid-sized boutique with offices in New York, Washington D.C., and Silicon Valley, and was particularly known for its extensive experience in high-stakes patent litigation. The firm provided a full range of IP services, including litigation, counseling, and prosecution for a global clientele that included numerous Fortune 500 companies. While historical rankings are not readily available, it was widely regarded in legal publications as a top-tier IP boutique.

The firm's patent litigation practice encompassed a wide array of technologies. Historically, it was involved in foundational patent cases for clients like Ford Motor Co. concerning the Selden patent and handled matters involving patents held by Thomas Edison and Nikola Tesla. Based on its representation of operating companies, the firm primarily focused on defense-side work. The single tracked case, TQP Development, LLC v. Avis Budget Group, Inc., in which the firm served as lead counsel for the defendant, is indicative of this practice, pitting a major corporation against a frequent patent asserter.

Key partners noted in the firm's litigation practice included Michael J. Lennon and John W. Bateman. Mr. Lennon, who has appeared as trial counsel in over 125 patent infringement lawsuits, continues to practice IP litigation and is now a partner at Potomac Law Group. Mr. Bateman, who was known for his work in life sciences patent disputes, passed away in 2021. Detailed public information regarding the firm's specific volume of IPR and other PTAB proceedings is not available. The "Kenyon" name is preserved in the branding of the IP and technology practice at the successor firm, Hunton Andrews Kurth.