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USA Guide 2022
USA - Nationwide Intellectual Property
Band 4

1 Ranked Lawyers


Provided by Winston & Strawn LLP

With 130 attorneys, Winston and Strawn’s Intellectual Property (IP) Practice is one of the most active and highly regarded in the country. Winston’s IP practice is unique in that no matter the venue, discipline, technology, industry, client, or case, we have a strong story to tell and can offer attorneys who have the right mix of experience and credentials. Winston attorneys regularly represent clients in high-stakes copyright, patent, trademark, and trade secrets matters across the high-tech, financial services, media and entertainment pharmaceutical, medical device, food and beverage, and fashion industries, among others.

Our IP litigation practice has been ranked repeatedly in the first tier nationally by U.S. News & World Report in its “Best Law Firms” survey and by Benchmark Litigation US. Additionally, Chambers USA has selected our IP and ITC practices for national rankings. In 2021, our patent litigation practice was recognized nationally by Chambers Global, The Legal 500 US, and Managing IP. The firm was selected by Law360 as one of the nation’s Top Ten “Litigation Powerhouses” and has been repeatedly named as one of Benchmark Litigation US’s “Top 20 Trial Law Firms.” Notably, more than one-third of our IP partners have been honored by national and international ratings organizations as among the best of the best.

Chambers Review

Provided by Chambers
Intellectual Property - USA - Nationwide
Band 4
What the team is known for

Winston & Strawn houses a respected patent litigation group with a formidable range of first-chair attorneys, prized for its trial capabilities before the ITC and PTAB as well as district and federal courts. Clients are drawn from a number of sectors including technology, pharmaceuticals and energy. Particularly focused on representation of generic manufacturers in ANDA litigation.

Work Highlights

Provided by Winston & Strawn LLP
  • Successfully represented Himka Pharmaceuticals in a patent case related to the drug Vascepa (icosapent) used to treat hypertriglyceridemia. The US Supreme Court denied Amarin Pharma’s petition for a writ of certiorari, cementing a Federal Circuit decision that invalidated six of Amarin’s patents.

Notable Practitioners

Provided by Chambers
Tom Melsheimer
Band 3

Tom Melsheimer is an experienced litigator with notable expertise in high-stakes, multi-patent disputes, in addition to matters arising from trade secrets misappropriation.
"He is a phenomenal trial lawyer."

Ranked Lawyers at
Winston & Strawn LLP

Provided by Chambers
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USA - Nationwide

Intellectual Property

Tom Melsheimer
Band 3


Provided by Winston & Strawn LLP

Barry Shelton

Becky Troutman

Bradley Coburn

Brett Johnson

Brian Ferguson

Charles Klein

Danielle Williams

David Enzminger

Head of Department

Diana Hughes Leiden

Dustin Edwards

Eimeric Reig-Plessis

Erin Ranahan

Ivan Poullaos

Jennifer Golinveaux

Head of Department

Jovial Wong

Kelly Hunsaker

Krishnan Padmanabhan

Laura Franco

Maureen Rurka

Merritt Westcott

Michael Nutter

Michael Rueckheim

Michael Tomasulo

Natalie Arbaugh

Nimalka Wickramasekera

Head of Department

Rex Mann

Richard McCarty

Samantha Lerner

Stephen Kong

Thomas Walsh


Provided by Winston & Strawn LLP


Financial Services and Banking

Media and Entertainment

Pharmaceuticals & Medical Devices

Retail and Consumer Products

Technology and Telecommunications