Lisa M. Mandrusiak is a senior associate in the firm's Litigation and Post-Grant proceedings practice groups representing a diverse clientele in a variety of fields, including pharmaceuticals, cosmetic compositions, smartphones, business methods, the oil and gas industry, and automotive components (powertrains, electric motors, and consumables).

Ms. Mandrusiak is recognized as a leading practitioner in Post-Grant proceedings at the United States Patent and Trademark Office (including IPRs and CBMs), where she has been named as counsel on over 60 IPRs.

In addition to litigating cases in federal courts (including ANDA) and at the International Trade Commission, Ms. Mandrusiak advises her clients on litigation procedure and strategies, litigation avoidance, and the overall protection, exploitation, and enforcement of global patent portfolios. Ms. Mandrusiak’s experience with international patent laws and prosecution enables her to better understand and communicate with foreign clients when strategizing and explaining U.S. patent laws.

Prior to attending law school, Ms. Mandrusiak worked as a Patent Technology Specialist at Shusaku Yamamoto Patent Attorneys in Osaka, Japan where she prosecuted hundreds of pharmaceutical and biotechnology patent applications in a variety of countries including Japan, Europe, and the United States and advised clients on successful strategies for managing international intellectual property portfolios.

With an educational background in molecular biology and genetics, she has a keen understanding of the sciences and technologies involved in her clients’ chemical, biochemical, biomedical and pharmaceutical inventions.


  • University of Maine School of Law (J.D., magna cum laude)
  • McGill University, Montreal, Canada (M.Sc.)
  • McGill University, Montreal, Canada (B.Sc., with distinction)


  • Registered to practice before the U.S. Patent and Trademark Office
  • Virginia
  • Patent Trial and Appeal Board
  • U.S. Court of Appeals for the Federal Circuit


  • ABA/BNA Award for Excellence in the Study of Intellectual Property Law (2011)
  • Wernick Prize for Legal Writing for the best legal scholarship submitted by a student (2011)
  • Member of the AIPLA Quarterly Journal Editorial Board (2017-2020 term)


  • French

Professional Affiliations

  • American Bar Association
  • American Intellectual Property Law Association (AIPLA)
  • The Pauline Newman IP American Inn of Court