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Mark Hollingsworth


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Mark is a patent attorney practicing in the areas of domestic and international patent procurement and related opinion work in the electrical, electronics, and electromechanical arts with an emphasis on electrical, electronic, and optoelectronic systems and sensors, medical devices, communications, software, and cleantech technologies. Mark was a Research Engineer at ARCO Solar and a Senior Electrical Engineer at Litton Aero Products Division in Southern California.  Mark co-founded the Intellectual Property law firm of Hollingsworth Davis, LLC (2005-2019), and was listed in IAM 1000 World's Leading Patent Professionals 2012-2018 and 2020.


  • Whittier Law School
    • J.D.
    • Law Review: Member, Associate Editor, Articles Editor
  • California State University, Northridge
    • B.S.E., Electrical Engineering
    • Minor coursework in Computer Science

Bar Admissions

  • Minnesota
  • California
  • U.S. Patent and Trademark Office

Professional Associations

  • American Intellectual Property Law Association (AIPLA)
  • AIPLA Electronic and Computer Law Committee, Co-Chair, Professional Programs Subcommittee, 1995-2000
  • AIPLA Electronic and Computer Law Committee, Chair, Patents Subcommittee, 2001-2002
  • Minnesota Intellectual Property Law Association
  • Minnesota State Bar Association
  • California State Bar Association
  • Institute for Electrical and Electronics Engineers

Publications & Presentations

  • “Is the Medium the Message? Extending Copyright Protection to Logic Devices," Whittier Law Review, Volume 12, 1991.
  • “Anatomy of an American Trial,” co-presenter to the Finnish Patent Bar, Helsinki, Finland, March 1997
  • “Patent Bar & U.S. Patent Office Relations,” AIPLA 2000 Spring Meeting, Pittsburgh, PA
  • “Patent Bar Pet Peeves,” Partnering in Patents Program, AIPLA 1999 Annual Meeting, Washington, D.C.


  • Electrical/Electronics
  • Electromechanical
  • Optoelectronic Systems and Sensor
  • Medical Devices
  • Communications and Software
  • Cleantech


  • Patent Procurement – International and Domestic
  • Strategic Patent Portfolio Development
  • Legal Opinions