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Patterson Belknap Webb & Tyler LLP

Lachlan S. Campbell-Verduyn, Ph. D.

Lachlan S. Campbell-Verduyn, Ph. D.


Patterson Belknap Webb & Tyler LLP
New York, U.S.A.

tel: 212-336-2846
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Local Time: Sun. 16:03


Lachlan Campbell-Verduyn is an Associate in the Firm's Litigation department. She has represented biotech and pharmaceutical companies in patent litigation on a variety of subject matters ranging from small molecules to biologics. She 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).

Ms. Campbell-Verduyn has a Ph.D. in Organic Chemistry from Rijksuniversiteit Groningen, in the Netherlands, where she developed new radiolabelled tracers for disease imaging, and an undergraduate degree in Chemistry from Mount Allison University, in Canada.

Representative Matters

Intellectual Property
Representing innovator company in one of the first cases under the legislation for biosimilars (BPCIA) and the first involving an antibody product.

Performed pre-suit investigation for potential Paragraph IV challenges to blockbuster drug.

Represented educational institution in trademark opposition and cancellation proceedings before U.S. Patent & Trademark Office. Obtained favorable outcome for client in both proceedings.

Pro Bono
Representing an individual client with their application to the Executive Clemency Bureau of the New York State Department of Corrections and Community Supervision under the auspices of the New York State’s Pro Bono Clemency Program.

Bar Admissions

  • U.S. Court of Appeals, Federal Circuit
  • U.S. District Court, Southern and Eastern Districts of New York
  • New York


  • Harvard Law School (J.D., cum laude, 2014)
  • Rijksuniversiteit Groningen (Ph.D., 2012)
    • Organic Chemistry
  • Mount Allison University (B.Sc., with honors and distinction, 2007)
    • Chemistry
Areas of Practice

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...


  • Contributor to BiologicsBlog.com
  • Co-Authored Supreme Court Amicus Brief for the New York Intellectual Property Law Association regarding Daiichi Sankyo Company, Ltd. v. Michelle K. Lee, Director, U.S. Patent and Trademark Office, No. 15-652 (December 16, 2015)

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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