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Patterson Belknap Webb & Tyler LLP

Aron Fischer

Aron Fischer



  • Anti-Counterfeiting
  • Alternative Dispute Resolution
  • Complex Commercial Actions
  • Biotechnology

WSG Practice Industries



Aron Fischer practices general civil litigation, with significant experience in intellectual property litigation, complex commercial disputes, employment matters, and defamation cases. Mr. Fischer has represented both plaintiffs and defendants in successful patent trials and appeals involving pharmaceuticals, medical devices, and biotechnology products. He is a member of the Firm’s anti-counterfeiting team and has litigated a number of additional trademark and unfair competition cases on behalf of plaintiffs and defendants, with a particular focus on the use of consumer survey evidence. Mr. Fischer regularly defends clients in employment and defamation cases, often obtaining dismissal before trial. Mr. Fischer also maintains an active pro bono practice on behalf of low-income clients.

Mr. Fischer served as a Law Clerk to the Hon. Robert Sack of the Second Circuit Court of Appeals, and as an Assistant Attorney General in the New York State Attorney General's Honors Program under Eliot Spitzer and Andrew Cuomo.

Bar Admissions

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


  • Yale Law School (J.D., 2005)
    • Comments Editor, Yale Law Journal
  • Harvard University (A.B., magna cum laude, 2000)
    • Phi Beta Kappa
Areas of Practice

Alternative Dispute Resolution | Anti-Counterfeiting | Biotechnology | Complex Commercial Actions | Consumer Products | Employment Law | Employment Litigation, Workplace Investigations, and Compliance | Intellectual Property Litigation | Life Sciences / Health Care | Litigation | Patent Litigation


  • Co-Author, "A New Strain Of Inequitable Conduct Litigation," Law360 (October 2017)
  • Co-Author, "If High Court Reverses Teva, Litigation Costs May Increase," Law360 (October 2014)
  • Author, Comment: Is the Right to Organize Unconstitutional?, 113 Yale L.J. 1999 (2004)
  • Co-Author, Neighborhoods and Health Research and its Relevance to Social Policy, in NEIGHBORHOODS AND HEALTH (Lisa Berkman & Ichiro Kawachi, eds., Oxford University Press, 2003)


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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...

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