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Patterson Belknap Webb & Tyler LLP

Dorothy D. LeRay

Dorothy D. LeRay



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

WSG Practice Industries



Dorothy LeRay is an Associate in the Firm's Litigation department. She has experience in complex commercial litigation, with a focus on innovator-side patent litigation in the pharmaceutical and healthcare industries.  She has represented clients in district court, at administrative hearings, and in arbitration.  From 2015 to 2016, she served as a law clerk to the Hon. Kathleen M. O'Malley of the United States Court of Appeals for the Federal Circuit.  Prior to clerking, Ms. LeRay was in private practice as a litigation associate in New York, where she focused on patent and antitrust litigation.

Representative Matters:

Patent Litigation:

Representing pharmaceutical company in Hatch-Waxman litigations involving first-in-class cancer drug before the District of Delaware.

Representing soda ash producer in patent litigation before the District of Delaware regarding process for manufacturing soda ash.

Represented pharmaceutical company in a patent licensing dispute regarding diagnostic products for detecting viral infections.

Represented pharmaceutical company at expert report stage in Hatch-Waxman litigation before the District of Delaware in connection with patents covering a combination therapy for HIV/AIDS.

Represented pharmaceutical company from Markman briefing through post-trial briefing in Hatch-Waxman litigation before the District of Delaware in connection with patents covering a metered dose inhaler API. 

Represented university in arbitration proceeding involving inventorship of patents to groundbreaking biotechnology. 

PTO Proceedings

Representing pharmaceutical company in inter partes review of patents covering methods of treating cancer with therapeutic antibodies.

Represented pharmaceutical company in inter partes review of patent covering a formulation for an injectable drug.

Antitrust Litigation:

Represented leading publishing company in antitrust litigation before the Southern District of New York in connection with allegations of price fixing in the eBook industry.

Pro Bono Litigation:

Represented former employee in contested unemployment insurance appeal proceeding. 

Represented undocumented minor in Special Immigrant Juvenile Status proceeding.

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., 2013)
    • Digest Executive Editor, Harvard Journal of Law & Technology
    • Petrie-Flom Center Student Fellow
  • Cornell University (B.A., 2010)
    • Biology & Society
    • Phi Beta Kappa
Areas of Practice

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


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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