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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 D. Cohen, Ph.D. is Counsel in the Firm’s Litigation department, where he focuses on patent litigation with an emphasis on the pharmaceutical and biotechnology industries. He represents clients in patent litigation on a variety of subject matters including small molecule chemistry, biologics, and medical devices. He has litigated cases brought under the Hatch-Waxman Act and the Biologics Price Competition and Innovation Act (BPCIA), and has represented clients in inter partes reviews (IPR). He is a regular contributor to the Firm’s Biologics Blog, and maintains an active pro bono practice including civil rights litigation, housing disputes, and asylum applications. 

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 as a Rising Star in the New York-Metro edition of Super Lawyers from 2017-2020.

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).


For the First Time Since TC Heartland, the Federal Circuit Addresses Venue in an ANDA Case – the Holding May Also Impact BPCIA Litigation
Patterson Belknap Webb & Tyler LLP, November 2020

On November 5, 2020, in Valeant Pharms. N. Am. LLC  v. Mylan Pharms. Inc., No. 2019-2402, the Federal Circuit held that venue in Hatch-Waxman cases brought under 35 U.S.C. § 271(e)(2)(A) is proper “only in districts where actions related to the submission of an Abbreviated New Drug Application (‘ANDA’) occur, not in all locations where future distribution of the generic products specified in the ANDA is contemplated.”  Slip op. at 3...


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