Professional Biography

David L. Anstaett Partner

  • Madison

    D +1.608.663.5408

    F +1.608.663.7499


    33 East Main Street, Suite 201

    Madison, WI 53703-3095




David Anstaett is a partner in Perkins Coie’s Intellectual Property and Patent Litigation practices. He represents clients in intellectual property disputes and commercial litigation, with a particular focus on representing pharmaceutical and biotechnology clients in complex patent litigation. David has litigated patent infringement matters and licensing disputes in federal courts throughout the country, at the Federal Circuit, and at the International Trade Commission. David has also argued high stakes pharmaceutical cases in inter partes review (IPR) proceedings before the Patent Trial and Appeal Board. He also counsels pharmaceutical companies on regulatory strategies and all aspects of the Hatch-Waxman Act. David’s practice also includes election and political law litigation and counseling.

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Ranked by Chambers USA

Intellectual Property: Litigation

Professional Recognition

  • Listed in Chambers USA "America's Leading Lawyers" Intellectual Property: Litigation, 2021
  • Recognized as an IP Star by Managing IP, 2020 - 2021
  • Named “General Patent Litigator of the Year – Midwest," by LMG Life Sciences, 2019
  • Listed in LMG Life Sciences 2013 and LMG Life Sciences 2014 as a “Life Science Star”
  • Western District of Wisconsin Bar Association's "Pro Bono Award," 2009
  • Named to the 2007 and 2008 list of "Wisconsin Super Lawyers Rising Stars” in the field of Intellectual Property Litigation by Law & Politics Media

Community Involvement

  • Appointed to the Wisconsin State Elections Board by the Chief Justice of the Wisconsin Supreme Court, 2005 - 2007
  • Adjunct Professor, University of Wisconsin Law School, Political Law: Campaign Finance, Ethics & Elections

Related Employment

  • Heller Ehrman LLP, Madison, WI, Associate, 2004 - 2008
  • Robert Bosch Stiftung, Berlin, Germany, Fellow, 2003 - 2004


  • Hon. Barbara Crabb, U.S. District Court for the Western District of Wisconsin, 2001 - 2003





Bar and Court Admissions

  • Wisconsin
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Fourth Circuit
  • U.S. Court of Appeals for the District of Columbia Circuit
  • U.S. District Court for the District of Columbia
  • U.S. District Court for the Western District of Wisconsin
  • U.S. District Court for the Eastern District of Wisconsin


  • University of Wisconsin Law School, J.D., summa cum laude, 2001, Senior Articles Editor, Wisconsin Law Review
  • The University of Kansas, B.A., Political Science, 1992