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Patterson Belknap Webb & Tyler LLP

Andrew D. Cohen, Ph. D.

Andrew D. Cohen, Ph. D.



  • Alternative Dispute Resolution
  • Biotechnology
  • Complex Commercial Actions
  • Intellectual Property Litigation

WSG Practice Industries



Andrew Cohen is an Associate in the Firm’s Litigation department, concentrating on biotech and pharmaceutical patent litigation. He holds a Ph.D. in Organic Chemistry from Johns Hopkins University and an undergraduate degree in Chemistry from Princeton University. He has represented biotech and pharmaceutical companies in patent litigation on a variety of subject matters ranging from small molecules to biologics to medical devices. He has experience litigating cases brought under the Hatch-Waxman act, and is representing an innovator pharmaceutical company in one of the first cases under the U.S. biosimilars legislation (the BPCIA). Mr. Cohen, a registered patent attorney, has also represented a client in an inter partes review (IPR), a patent office trial proceeding. He has a wide range of subject matter experience in the biotech and pharmaceutical arts, including small molecule pharmaceuticals, humanized antibodies, recombinant DNA technology, and protein-polymer conjugates. He is also an inventor on several issued patents relating to clinical-stage small molecules for the treatment of heart failure.

From 2012 to 2013, Mr. Cohen served as a law clerk to the Hon. Cathy Seibel of the United States District Court for the Southern District of New York. Prior to clerking, Mr. Cohen also spent three years as a patent agent at an international law firm, where he worked on motion practice, patent prosecution, due diligence, and opinion drafting. Before that, he was a scientific advisor for three years at a boutique intellectual property law firm, where he worked on several Hatch-Waxman litigations, as well as due diligence, opinion drafting and patent prosecution. Mr. Cohen was recognized in 2017 as a Rising Star in the New York-Metro edition of Super Lawyers.

Mr. Cohen is a frequent contributor to the Firm’s BiologicsBlog.com, which tracks and analyzes developments in intellectual property law related to biotechnology and biologic medical products as well as regulatory and legislative changes.

Bar Admissions

  • U.S. Supreme Court
  • U.S. Patent and Trademark Office
  • U.S. Court of Appeals, Federal Circuit
  • U.S. District Court, Southern District of New York
  • U.S. Court of International Trade
  • New York


  • Fordham University School of Law (J.D., magna cum laude, 2012)
    • Order of the Coif
    • Senior Articles Editor, Fordham Law Review, Vol. 79
    • Wilkinson Scholar
  • Johns Hopkins University (Ph.D., 2006)
    • Chemistry (Organic)
  • Johns Hopkins University (M.A., 2004)
    • Chemistry (Organic)
  • Princeton University (A.B., cum laude, 2000)
    • Chemistry (Organic)
Areas of Practice

Alternative Dispute Resolution | Biotechnology | Complex Commercial Actions | Intellectual Property Litigation | Litigation | Patent Litigation

Professional Career

Professional Activities and Experience

MEMBERSHIPS: American Chemical Society; New York City Bar Association (Member of the Patents Committee); New York Intellectual Property Law Association (Member of the Amicus Briefs Committee); Federal Bar Council.


Biologics Blog
Patterson Belknap Webb & Tyler LLP 

Biologics Blog is a source of insights, information and analysis related to biologics, including the legal developments, trends and changing regulation that impact the biotechnology industry. Patterson Belknap represents biotechnology, pharmaceutical and healthcare companies in a broad range of...

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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