Gregory A. Castanias (Greg)
Partner, Jones Day
Washington D.C. Metro Area
IP - Mechanical, Copyright Litigation, Trademark Litigation, Patent Litigation, IP Litigation, IP - Software, IP - Electronics & Hardware
Greg Castanias, head of Jones Day's Federal Circuit team, has almost 30 years' experience as a leading appellate and intellectual property litigator. His experience includes five Supreme Court arguments, 70-plus Federal Circuit arguments, and countless others in federal and state courts across the nation, from Alaska to Connecticut. He is a Fellow of the American Academy of Appellate Lawyers. His intellectual property experience includes such diverse technologies as genetics, diagnostics, pharmaceuticals, chemistry, electronics, and mechanical fields, as well as copyright, trademark, and trade secret disputes. Greg also has significant experience in state tax disputes before the U.S. Supreme Court and state appellate courts. A "Trailblazer and Pioneer" in intellectual property law ( The National Law Journal ), and an IP and Life Sciences "Star," Greg has been "instrumental in driving the firm's standout appellate practice" ( IAM Patent 1000 ). He is "a sharp and effective advocate who picks up the details of the matter quickly" and "a great issue-spotter and skilled advocate" ( Legal 500 ), with "an instinctual feel for the art of persuasion before the Federal Circuit, where he is highly respected" ( IAM Patent 1000 ). Greg is the lead author of Federal Appellate Practice and Procedure (West Publishing 2d ed. 2017) and is adjunct Professor of Law at Indiana University's Maurer School of Law, where he teaches Appellate Practice and Procedure and Federal Circuit Advocacy. Greg has represented clients such as Abbott, Celgene, DePuy Spine, Dexcom, DIRECTV, Google, Histogen, Huawei, IBM, Intersil, LabCorp, Limited Brands, MathWorks, Merck, Merial, Myriad Genetics, Pfizer, Procter & Gamble, Purdue Pharma, SanDisk, SAS Institute, Sinochem, and Transocean.
  • Huawei wins patent appeal and receives its attorneys' fees and experts' costs
  • ION Geophysical wins appeal holding 30 of competitor's patent claims unpatentable
  • Intersil obtains reversal of $77 million judgment in trade-secret and patent dispute
Abbott Laboratories Celgene DIRECTV Google Histogen Huawei IBM Intersil Corporation ION Geophysical LabCorp Limited Brands, Inc. Merck Merial Myriad Genetics, Inc. Pfizer Proctor & Gamble Purdue Pharma SanDisk SAS Institute Sinochem Transocean
Indiana University Maurer School of Law
J.D. summa cum laude; Order of the Coif; Order of Barristers
Law Journal
Wabash College
A.B. summa cum laude; with distinction
Honor Scholar; George Lewes Mackintosh Fellow
Bar Admissions

Virginia, District of Columbia