Ethan Horwitz, a top-ranked patent and trademark litigator, has recently joined Carlton Fields Jorden Burt’s New York office as a shareholder in the firm’s national Intellectual Property and Technology practice group. Previously, Horwitz was a partner at King & Spalding and before that, he was Chair of the IP Group at Goodwin Procter.

Carlton Fields Jorden Burt has over 370 attorneys and consultants serving clients from California, Connecticut, Florida, Georgia, New York, and Washington, D.C. It is known for its national litigation practice, including class action defense, trial practice, white-collar representation, and high-stakes appeals; its regulatory practice; and its handling of sophisticated business transactions and corporate counseling for domestic and international clients.

“I’m thrilled to join such a dynamic and growing firm  and am excited to utilize the firm’s national platform and work with its broad range of first class legal talent to grow the IP practice,” said Horwitz.


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While patent litigation is his primary focus, Horwitz also has a diverse practice in IP law. He has advised clients and has litigated patent, trademark, trade dress, copyright, and false advertising cases in the U.S. and internationally.

Jill Sarnoff Riola, chair of Carlton Fields Jorden Burt’s IP and Technology practice said, “Ethan is simply one of the best IP litigators in the business. He literally wrote the book on patent litigation.  Ethan brings a substantial expertise that enhances and expands our existing IP practice, and will undoubtedly give us more flexibility to grow in new directions.”

Horwitz’s experience in patent litigation ranges from the largest ITC case of its time to a patent case in which he obtained the first preliminary injunction on a design patent for Oscar Mayer’s Lunchables product. He represented Pepperidge Farm in a landmark case obtaining preliminary injunction based on dilution of its rights to the shape of its Goldfish cracker. He has represented Kraft in a false advertising case with respect to the company’s Jell-O gelatin product. In a landmark case under the Digital Millennium Copyright Act, Horwitz represented Joe Simon, the co-creator of Captain America, against Marvel Comics, giving Mr. Simon rights to  recover his copyright from Marvel.

“Ethan is a well-known and well-respected IP litigator who we immediately knew would add to the firm’s growing IP practice both in NY and nationally. He brings a wealth of background in IP and specifically in IP litigation. His addition to the IP practice will assist the firm in expanding the breadth and depth of its national IP practice,” said Sarnoff Riola.

The firm’s New York Office Managing Shareholder Brian Rosner, said, “Over the past 25 years, Ethan has developed a reputation as a pre-eminent IP trial lawyer. He brings an enormous amount of specialized knowledge to our IP practice, and his experience will bring great value to our firm and to our clients.”

In addition, Horwitz is the author and editor of four prominent treatises on IP law published by LexisNexis/Matthew Bender & Co: Horwitz on Patent Litigation (3 volumes), Intellectual Property Counseling and Litigation (7 volumes), World Trademark Law and Practice (5 volumes), andPatent Office Rules and Practice (13 volumes). And, Horwitz earned his J.D. degree at St. John’s University School of Law, an M.S. degree at New York University’s Courant Institute of Mathematical Sciences, and a B.S. degree at Polytechnic Institute.

Sarnoff Riola  added, “Ethan’s range of experience and expertise in trademark, trade dress, false advertising, copyright, and licensing supports the wide variety of intellectual property matters already handled by the Firm, and adds to the richness of its offerings. By having a diverse IP practice, Ethan brings a balanced practice to our intellectual property group that will allow us to expand our capabilities to a broader, bigger client base.”