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The Right Way to Calculate Due Dates in Europe and China
If you are docketing in China or Europe, you may notice that calculated due dates don’t match the dates given by your foreign associate. This program will explain why and the proper way to calculate due dates in these countries.
Using Analytics as a Patent Annuity Decision Tool
Join us as our panel discusses best practices for the annuity payment decision process and how patent analytics can help assist annuity decision makers in making the best decisions possible.
IP Punch List for Software Companies
The Software field is a dynamic growing area. This webinar will focus on the challenges that software companies face in protecting their innovations both in the US and in other important jurisdictions.
Event Title
Schwegman is teaming up with WIPO to host an all-day complimentary "Advanced PCT Training" seminar that will provide insights to practitioners on amendments and recent developments to the PCT rules, developing a strategy for international filings and procedural safeguards.
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Schwegman Lundberg & Woessner

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Areas of Practice
  • Electrical & Computers
  • Medical Devices
  • Mechanical & Electromechanical
  • Clean Technologies
  • Chemical & Materials Science
IP Services
  • Acquisition Due Diligence
  • Freedom To Operate
  • Opinions
  • Patent Analytics
  • Patent Prosecution
  • Post-Grant Proceedings
  • Portfolio Management & Analysis
Bar Admissions & Associations
Past Experience

David Black is a registered patent attorney and Principal at Schwegman Lundberg & Woessner. David maintains a diverse practice with an emphasis on portfolio development and due diligence. In his time as an electrical engineer, David designed low voltage analog circuits and digital electronic circuits for Telex Communications, Inc. and later, for a small hearing aid manufacturer. After recognizing the strategic business advantage accorded by a strong patent portfolio, David proceeded to law school, and after a year with a small patent law firm, joined the Schwegman firm in Minneapolis. At the Schwegman firm, David has distinguished himself by providing strategic patent services for sophisticated clients including many academic institutions. David has successfully leveraged the resources of the Schwegman firm to help his clients achieve solid patent protection and continued commercial success. In his time away from the office, David enjoys a rural lifestyle that includes spending time with his young family and tending a few bee colonies and a small apple orchard.


William Mitchell College of Law
St. Paul, MN, 1999, J.D.

University of Minnesota
Minneapolis, MN, 1984, B.S.
Major: Electrical Engineering
Bar Admissions & Associations
Bar Admissions & Associations

Bar Admissions
U.S. Patent and Trademark Office
U.S. Court of Appeals for the Federal Circuit

American Intellectual Property Law Association
Minnesota Intellectual Property Law Association

Past Experience
Past Experience
Telex Communications, Inc.
Palmatier, Sjoquist, Helget and Voigt, P.A., Minneapolis, Law Clerk