Mark A. Haynes

Mark A. Haynes

Santa Cruz, California
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Mark’s practice is focused exclusively on intellectual property counseling, primarily in the areas of patent prosecution and analysis of the scope and validity of patents in a variety of settings, including licensing, litigation, diligence investigations and strategic planning. After three decades of continuous practice, Mark’s clients appreciate and highly regard his practical legal counsel, novel approach to problem-solving, business and management savvy, concise communication style and accessibility.

Mark is dedicated to facilitating what his clients want to achieve, and then delivering such results. He is valued for providing legal counsel that helps rather than hinders his clients’ commercial objectives. In addition, Mark is careful with his clients’ budgetary requirements, and strives to deliver ROI based on the consistently high quality of his work and the actual utility of his advice. Mark’s personal stake in serving his client’s best interest is why they seek his continuous advice regarding their ongoing IP initiatives.

Mark holds the highest available peer-review rating at Martindale-Hubbell of AV-Preeminent. He is committed to understanding the often complicated technologies and dynamics of each client. Technical areas of Mark’s practice have included integrated circuits, communications, computer systems, the internet and computer software, medical devices, lasers, optics, radar and integrated circuit manufacturing technology. Whether Mark is advising a large corporation with international IP assets and established policies and procedures, or an emerging company seeking immediate solutions in order to sustain itself and grow, Mark knows from actual experience how to navigate beyond the unique challenges they face.

Mark graduated from Stanford Law School, and holds a B.S.E.E. with Highest Honors from the University of Texas at Austin. He is admitted to practice law in Texas and California, as well as registered to practice before the U.S. Patent and Trademark Office. A founding partner of HBW, Mark previously served as a member of Wilson Sonsini Goodrich & Rosati in Palo Alto, CA, where he was head of the Patent Prosecution Group for computer related technology. Prior to joining Wilson Sonsini, Mark founded and built Haynes & Davis in Menlo Park, CA, specializing in intellectual property and where his entire team would also join Wilson Sonsini as a result of their success. Mark began his legal career in criminal defense litigation involving capital murder trials. In the intellectual property field, he moved to San Francisco to join the IP firm of Fliesler Dubb Meyer & Lovejoy, where he was promoted from Associate to Partner.

In addition to his extensive private practice experience, Mark also worked as a patent attorney at IBM Corporation in Los Gatos, CA, working directly with the Computer Science Department at Almaden Research Center. Having served as an in-house attorney himself, Mark offers an innate understanding of what it means to set objectives within a company and achieve those results.

A charismatic speaker and known thought innovator in IP law, Mark has served as a panelist for the Intellectual Property Section of the State Bar of California on the topic of “Software Patent Practice,” as well as for the Intellectual Property Symposium at UC Berkeley entitled “The Legal and Policy Framework for Global Electronic Commerce: A Progress Report.” Arising from that Symposium, he then authored “Commentary: Black Holes of Innovation in the Software Arts” for the Berkeley Technology Law Journal.

An active participant in the legal community, Mark is a member of the American Bar Association, American Intellectual Property Law Association, San Francisco Intellectual Property Law Association, and the Silicon Valley Intellectual Property Law Association. He also served as a member of the Advisory Board and a former Trustee of Coastside Land Trust.

Bar Admissions

  • Texas, 1981
  • California, 1984
  • U.S. Patent and Trademark Office, 1982


  • Stanford Law School, Stanford, California
    • J.D. – 1981
  • University of Texas at Austin
    • BSEE – 1977
    • Honors: With High Honors
    • Major: Electrical Engineering

Published Works

  • Author, “Commentary: Black Holes of Innovation in the Software Arts,” Berkeley Technology Law Journal, Vol. 14, No. 2, Spring 1999


  • Panelist, “The Legal and Policy Framework for Global Electronic Commerce: A Progress Report,” University of California at Berkeley
  • Presenter, Intellectual Property Section of the State Bar of California, “Software Patent Practice”

Honors and Awards

  • Martindale-Hubbell of AV-Preeminent

Professional Associations and Memberships

  • American Bar Association, Member
  • American Intellectual Property Law Association, Member
  • San Francisco Intellectual Property Law Association, Member
  • Silicon Valley Intellectual Property Law Association, Member
  • Coastside Land Trust, Member of Advisory Board
  • Coastside Land Trust, Trustee, 2005 – 2010

Past Employment Positions

  • Wilson Sonsini Goodrich & Rosati, Member and head of Patent Prosecution group for computer related technology, May 1, 1996 – February 1, 1999
  • Haynes & Davis, Menlo Park, CA, Founder, September 1, 1993 – May 1, 1996
  • Fliesler Dubb Meyer & Lovejoy, Associate then Partner, August 1, 1985 – September 1, 1993
  • IBM Corporation, Los Gatos, California, Patent Attorney
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