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Nathan E. Denning

Partner

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Education
  • University of Pennsylvania Law School  (J.D.)
    • cum laude
  • The Ohio State University  (B.A. and B.S.)
    • magna cum laude
    • honors
Recognition

The New York Law Journal “Rising Stars” (2024)

Benchmark Litigation “Future Star” (2026)

Benchmark Litigation “40 & Under” (2022-2025)

The American Lawyer “Litigator of the Week” Runner Up (2023)

Bar Admissions
  • New York

Nathan is a Partner in Wiggin and Dana’s Litigation Department and is Co-Chair of the firm’s Antitrust and Technology Disputes Practice Group. Recognized as a “Rising Star” by The New York Law Journal, Nathan was also named to Benchmark Litigation’s “40 and Under List” for three consecutive years before being named a “Future Star” in 2026. His advocacy has been praised by Am Law Litigation Daily for its “attention-catching storytelling,” and his successful defense of a contract and intellectual property dispute earned him runner-up honors as The American Lawyer’s “Litigator of the Week.” Nathan was also one of the lead Wiggin lawyers representing Epic Games in its antitrust victory over Google in federal court in California, a win for which Global Competition Review awarded “Litigation of the Year.”

A generalist litigator with a nationwide practice, Nathan has obtained a string of favorable results in high-stakes matters for clients—plaintiffs and defendants alike—across a range of industries and practice areas. He also represents clients in FTC, SEC, and DOJ investigations, conducts internal investigations, and litigates Chapter 11 bankruptcy adversary proceedings.

Before joining Wiggin and Dana, Nathan practiced at Cravath, Swaine & Moore LLP.

Nathan’s recent notable representations include:

  • Aurobindo Pharma USA: Representing Aurobindo, a leading generics pharmaceutical company, as lead counsel in a multidistrict litigation comprising dozens of antitrust lawsuits brought by state attorneys general and private plaintiffs relating to the pricing of generic pharmaceuticals.
  • NextEra Energy: Representing NextEra, one of the world’s largest energy companies, as lead counsel in New York state court litigation concerning the operation of a group of wind farms in Pennsylvania, West Virginia, and California.
  • OpenX: Representing OpenX, a digital advertising platform, as co-lead counsel with Cravath in an action against Google alleging that Google’s anticompetitive conduct in the publisher ad server and ad exchange markets has stifled innovation and harmed competition in violation of the Sherman Act.
  • Former Twitter Executive: Represented Twitter’s former Chief Marketing Officer as lead counsel in a federal lawsuit in California against Elon Musk and X Corp. seeking tens of millions of dollars in unpaid severance. Following 18 months of litigation, the case settled on confidential terms on the eve of Musk’s deposition.
  • Dooney & Bourke Founder: Represented the founder of luxury leather goods brand Dooney & Bourke as lead counsel in litigation seeking approval to subdivide tens of millions of dollars’ worth of real estate in one of Greenwich, Connecticut’s most exclusive residential communities. Following nearly two years of litigation, defendants agreed to permit the subdivision as proposed and to reimburse Nathan’s client for millions of dollars in damages and legal fees.
  • American Express: Represented American Express as co-lead counsel with Cravath in defending more than 1,200 individual merchant arbitrations before JAMS and AAA, each one challenging Amex’s anti-steering and non-discrimination rules. After obtaining favorable rulings in hundreds of cases, the remaining claimants withdrew all claims.
  • Murdoch Family Trust: Represented three of Rupert Murdoch’s children as co-counsel with Cravath in Nevada state court in defeating an effort by their father to change the terms of the family trust that controls both Fox and News Corp.

Nathan received his J.D. from the University of Pennsylvania Law School and earned both a B.S. in Electrical and Computer Engineering and a B.A. in Political Science from The Ohio State University. Following law school, he served as a law clerk to Judge Roger L. Wollman of the U.S. Court of Appeals for the Eighth Circuit and to Judge James S. Gwin of the U.S. District Court for the Northern District of Ohio.

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