Stephen B. Maebius



Stephen (Steve) B. Maebius is a partner and intellectual property lawyer with Foley & Lardner LLP. He has led teams within Foley handling a variety of different kinds of IP work, including IP due diligence reviews, infringement and validity opinions, international portfolio management, licensing, litigation with parallel inter partes reviews, reexaminations and interferences, and pharmaceutical patent term extensions. Two IP transactions in which Steve has participated were awarded "Deal of Distinction" status by the Licensing Executives Society. He is a former member of the firm’s Management Committee and former chair of the Intellectual Property Department. Prior to becoming a lawyer, he was a patent examiner in the Biotechnology Group of the U.S. Patent & Trademark Office.

Representative Matters

  • Co-counsel in the successful defense of a Post-Grant Review filed against a CRISPR Cpf1 patent (PGR2018-00072)
  • Lead counsel in the successful defense of six Inter Partes Reviews filed by generic petitioners against a family of Orange Book-listed pharmaceutical patents covering a $1B controlled release product with parallel Hatch-Waxman litigation (IPR2013-00368, IPR2013-00371, and IPR2013-00372 – instituted but all claims found patentable in final written decision; IPR2015-01777, IPR2015-01778, and IPR2015-01782 – not instituted)
  • Prosecuted a portfolio of product-by-process patents listed in the Orange Book and upheld as valid in district court litigation
  • Co-counsel for a successful petitioner in an Inter Partes Review filed against a patent asserted in litigation against an LED client (IPR2012-00005 – decision affirmed on appeal)
  • Takeda Pharmaceutical Co. Ltd. v. John Doll (Fed. Cir. 2009) – co-counsel in a precedential 2-1 decision remanding a double patenting rejection arising from patent reexamination (all claims confirmed to be patentable upon remand to the Patent Office)
  • Licensing of a biotechnology drug with an up-front payment of $100M – represented the acquiring company in IP diligence and drafting transaction agreements

Thought Leadership

Steve is the principal author of the book “Due Diligence for Intellectual Property: Valuing Assets in a Transaction,” published by Law Journal Press. He has been active as both a teacher and author in the intellectual property field, including serving as a visiting associate professor of intellectual property law at Tokyo University's Research Center for Advanced Science and Technology and serving as a faculty adjunct professor at George Washington University Law School, where he taught comparative and international patent law. In addition, he testified about post-grant patent proceedings during the FTC/DOJ hearings on the "Implications of Competition and Patent Law and Policy," which preceded the landmark patent legislation known as the America Invents Act.

In the area of nanotechnology, Steve helped start the NanoBusiness Commercialization Association and the Nanotechnology Law & Business journal and he continues to serve as an associate editor of the Nanotechnology Law & Business journal.


  • IAM Patent 1000 – The World’s Leading Patent Practitioners, recognized for post-grant patent procedures (2012 - 2013, 2020) and prosecution and transactions (2014 - 2016, 2020-2021)
  • Chambers Global Intellectual Property – USA and Japan (2012 - 2015)
  • Chambers USA for the District of Columbia in intellectual property and patent prosecution (2012 - 2014)
  • Washington, D.C. Super Lawyers® for intellectual property (2014 - 2017)
  • The Legal 500 for patent licensing and patent prosecution (2010 - 2013), for patent licensing and transactional (2014 and 2015), for intellectual property – patent prosecution – utility and design patents (2015 and 2016), and for healthcare – life sciences (2015 and 2016)
  • Selected by his peers for inclusion in The Best Lawyers in America© in the fields of:
    • Biotechnology and Life Sciences Practice (2007 - 2023)
    • Litigation - Patent (2012 - 2023)
    • Patent Law (2012 - 2023)
    • Intellectual Property (2007 - 2010)
  • Washingtonian’s Best Lawyers in Washington for Intellectual Property (2013 - 2014)
  • Peer review rated as AV Preeminent®, the highest performance rating in the Martindale-Hubbell® Peer Review Ratings™ system
  • Managing Intellectual Property - IP Star (2015)


Steve graduated from Cornell University (B.S. biology, 1989) and the George Washington University Law School (J.D., 1994).


Steve is admitted to practice in the District of Columbia, the state of Virginia, before the Court of Appeals for the Federal Circuit, the U.S. Supreme Court and before the U.S. Patent and Trademark Office.