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Michael Siem

Senior Consultant



New York

District of Columbia

U.S. Court of Appeals for the Federal Circuit

U.S. Court of Appeals for the Eleventh Circuit

U.S. District Courts for Southern and Eastern Districts of New York

U.S. Patent and Trademark Office

U.S. Supreme Court


Illinois Institute of Technology,  B.S., (Chemical Engineering)

University of Michigan Law School, JD



Michael A. Siem is a nationally renowned intellectual property litigator and registered patent attorney with a focus on complex and high-value patent litigation. He represents both patentees and alleged infringers in various federal district courts, and litigates cases in many technological areas, including pharmaceuticals, medical devices, consumer electronics, chemical processes, computer networks, and biotechnology. In the trademark realm, Michael has defended against claims of trademark and trade dress infringement, along with handling proceedings in the Trademark Trial and Appeal Board. Michael’s experience also includes handling trademark litigation under the Anticybersquatting Consumer Protection Act with regard to the use and registration of a website domain name. He also has significant experience in drafting and filing patent and trademark applications. Equipped with a deep understanding of pharmaceutical litigation related to intellectual property and the Hatch-Waxman Act, Michael also maintains a focus on matters related to Abbreviated New Drug Applications (ANDAs). In his patent litigation practice Michael has been lead trial counsel in patent litigation claims, and his trial experience includes arguing motions, conducting direct and cross-examinations of witnesses, and presenting arguments at Markman hearings. In addition to his patent litigation trial experience, Michael has argued at the Virginia Supreme Court, the Eleventh Circuit Court of Appeals, and other state and federal district courts.

Professional Affiliations

  • American Bar Association

  • Association of University Technology Managers

  • New York State Bar Association

  • New York Intellectual Property Law Association

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