James M. Oehler - McDermott Will & Emery


James M. Oehler focuses his practice on patent prosecution and litigation. He has handled a wide range of patent applications related to medical devices, selective catalyst reduction systems, fiber optic coupling systems, automotive transmissions and accessories, paper products, heat exchanger systems, and commercial restaurant equipment. James has experience litigating in federal district courts, inter partes review proceedings before the US Patent Trial and Appeal Board of the US Patent and Trademark Office, and the International Trade Commission. He regularly advises clients across diverse technologies, including health care, e-commerce, consumer products, and energy industries.

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  • Represented Cook Group Inc. v. Boston Scientific, Inc., IPR2017-00131, -00132, 00133, -00134, -00135, -00440, -00435; Boston Scientific, Inc. v. Cook Group Inc., No. 15-CV-00980, D. Delaware (2015). Represented Cook in IPRs and district court litigation related to medical device patents*
  • Ameranth, Inc. v. Hyatt Hotels Corp., No. 12-CV-01627, S.D. California (2012). Represented Hyatt Corp. in a reservation management system patent infringement matter*
  • EXFO Inc. v. Viavi Solutions, Inc., No. 15-CV-01685, E.D. Texas (2015). Represented EXFO Inc. in a fiber optic testing device patent infringement matter*

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  • The Best Lawyers: Ones to Watch in America, Intellectual Property Law, Chicago, 2024
  • Chief Justice Edward D. White Award, Highest cumulative grade point average in graduating class, Loyola University Chicago School of Law, 2009
  • CALI Excellence for the Future Awards in Patent Law, Property, Constitutional Law and Remedies courses, Loyola University Chicago School of Law


Loyola University Chicago School of Law, JD magna cum laude, 2009
Professional Engineer License (Kansas), 2004
University of Iowa, BA Mechanical Engineering, 2000


US District Court for the Northern District of Illinois
US Patent and Trademark Office