Charles A. Weiss

Charles A. Weiss


Holland & Knight LLP

Recognized since 2013

New York, New York

Practice Areas

Litigation - Patent

Patent Law

Send Charles A. Weiss an email at charles.weiss@hklaw.com Navigate to map location for Charles A. Weiss
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Charles A. Weiss is a partner in Holland & Knight's New York office and head of the New York Intellectual Property Group. He concentrates his practice on technology-driven litigation, counseling and transactions, primarily in the pharmaceutical, chemical and biotechnology areas. He also counsels clients on questions of patent validity and infringement, and provides a litigator's perspective on prosecution matters.

Mr. Weiss litigates patent, trade secret, license and false advertising cases in diverse technical areas. He has handled cases over the years involving expression of recombinant proteins and antibodies, controlled release pharmaceuticals, medical diagnostic agents, endocrine and hormone products, nutritional supplements, industrial control systems, food chemistry, nucleic acid diagnostic assays and commercial detergents. He also has extensive experience in the investigation of product counterfeiting and pursuit of those responsible.

In addition, Mr. Weiss has a diverse non-litigation practice, focused on supporting transactions in which a substantial value is attributed to a party's patent position, such as its ability to exclude competitors or to bring its product to market free of meritorious infringement claims by others. He has negotiated and drafted licenses and other agreements, including commercial collaboration, joint research and product acquisition agreements, and regularly advises financial professionals on the strength or vulnerability of a target company's patent positions.

Mr. Weiss also has experience in commercial matters, including corporate and securities transactions, contract litigation, insurance and banking disputes, construction litigation, accounting and attorney malpractice, and investigations of employee malfeasance and fraud. Mr. Weiss is an adjunct professor at New York Law School, where he designed a course on patent litigation and analysis, and is also an associate adjunct professor at Brooklyn Law School, where he designed and teaches a course on food and drug law.

Contact & Links
Location
  • 787 Seventh Ave, 31st Floor,
    New York, NY 10019
Education
  • Columbia University, J.D., graduated 1991
Bar Admissions
  • New Jersey, New Jersey
  • New York, New York
Affiliations
  • American Bar Association - Member
  • Institute of Electrical and Electronics Engineers - Member
  • New York State Bar Association - Member

Holland & Knight LLP
New York, New York

609 The Best Lawyers in America® awards

192 Best Lawyers: Ones to Watch® in America awards

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Recognized in The Best Lawyers in America® 2025 for work in:
  • Litigation - Patent
  • Patent Law
Awards:
  • Eta Kappa Nu
  • Tau Beta Pi
  • IAM Patent Litigation 250, International Asset Management magazine, 2011-2014
Additional Areas of Practice:
  • Equipment Finance Law
  • Health Care Law
  • Litigation - Health Care
  • Litigation - Intellectual Property
  • Trademark Law

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Publications

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