Prajakta A. Sonalker, Ph.D.

Partner
Prajakta Sonalker

Prajakta Sonalker is a life sciences litigator and strategist who focuses on complex, high-stakes disputes involving cutting-edge technologies and cross-border enforcement. Prajakta represents biotechnology and pharmaceutical companies in matters where intellectual property, scientific innovation, and commercial objectives intersect, with deep experience structuring multi-jurisdictional litigation to maximize advantage. She has served as lead counsel in high-stakes life sciences disputes and has played key roles in litigation involving advanced technologies, including cell and gene therapies, biologics, RNA-based technologies, and vaccines. She concentrates on disputes involving platform technologies, licensing and collaboration agreements, and competitor litigation, where complex science intersects with significant business risk.

A hallmark of Prajakta’s practice is her experience architecting cross-border litigation strategies. She coordinates actions across jurisdictions, working with international teams and managing parallel proceedings to align legal, scientific, and business objectives. Her experience includes complex, multi-jurisdictional matters requiring coordination of parties, evidence, and legal issues.

Prajakta has handled disputes at all stages, from pre-suit investigation through trial and appeal, including proceedings before the Patent Trial and Appeal Board (PTAB). She also advises clients on risk assessment, freedom-to-operate issues, and dispute strategy in connection with licensing, transactions, and product development.

Prajakta draws on nearly two decades of experience in private practice and in-house roles, bringing a practical, business-oriented perspective to complex disputes.

Experience

Representative Matters

  • Served as lead counsel in a high-stakes dispute involving gene-editing technology with cross-border elements
  • Represented a major biopharmaceutical company in complex patent and trade secret disputes involving a therapeutic vaccine
  • Advised major pharmaceutical companies on dispute strategies and risk allocation in connection with licensing and collaboration agreements
  • Represented an innovator biopharmaceutical company in its multi-billion-dollar acquisition of a cancer immunotherapy biotechnology company 
  • Represented a multinational pharmaceutical company in Hatch-Waxman litigation against multiple defendants concerning patents on an overactive bladder treatment
  • Represented an innovator biopharmaceutical company in district court and PTAB proceedings concerning patents related to RNA interference technology
  • Represented a multinational consumer goods company in Hatch-Waxman litigation against multiple defendants concerning patents related to long-acting cough medications
  • Represented a multinational pharmaceutical company in Hatch-Waxman litigations concerning a patent on antifungal formulations
  • Represented an innovator biopharmaceutical company in an interference proceeding involving nucleoside analogs useful for treating HCV infection

Representative Clients

  • Alnylam
  • Astellas Pharma
  • Gilead
  • Kite Pharma
  • Reckitt Benckiser

Insights

Credentials
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Education

  • J.D. Fordham University School of Law 2013
  • Ph.D. Molecular Pharmacology University of Pittsburgh 2006
  • B.S. Pharmaceutical Sciences Institute of Chemical Technology, Mumbai, India 2001

Bar Admissions

  • New Jersey
  • New York
  • U.S. Patent and Trademark Office

Court Admissions

  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the District of New Jersey

Professional Memberships and Activities

  • Fellow, Leadership Council on Legal Diversity (LCLD), 2023
  • Member, New York Intellectual Property Law Association
  • Member, New Jersey Intellectual Property Law Association
  • Member, Intellectual Property Owners Association

Recognition
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  • The Best Lawyers in America, Ones to Watch, 2024 – 2025
  • LMG Life Sciences, Rising Star, 2020