Aron Fischer

Aron Fischer



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

WSG Practice Industries


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


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


Antitrust Update
Patterson Belknap Webb & Tyler LLP 

Antitrust Update Blog is a source of insights, information and analysis on criminal and civil antitrust and competition-related issues. Patterson Belknap’s antitrust lawyers represent clients in antitrust litigation and counseling matters, including those related to pricing, marketing,...

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...

Data Security Law Blog
Patterson Belknap Webb & Tyler LLP is the firm’s resource for the latest news, analysis, and thought leadership in the critical area of privacy and cybersecurity law. Patterson Belknap’s Privacy and Data Security practice provides public and private enterprises, their leadership teams and boards with...

Exempt Org Resource - Nonprofit Law Blog
Patterson Belknap Webb & Tyler LLP is an online resource for information and insight on the unique legal issues impacting nonprofit organizations. The site is designed to keep the nonprofit, tax-exempt organization community up-to-date on legal developments, changing regulations and good practices.

Patterson Belknap Webb & Tyler LLP 

Misbranded is Patterson Belknap’s blog covering false advertising litigation—both consumer class actions and competitor suits—with a particular focus on FDA-regulated products (foods/beverages, pharmaceuticals, cosmetics, and dietary supplements).

New York Commercial Division Decisions
Patterson Belknap Webb & Tyler LLP 

The blog is a source for insights and developments related to practice in the Commercial Division of the New York State Supreme Court. This blog reviews key developments in the Commercial Division, including important decisions handed down by the Commercial Division and appellate court...

NY Patent Decisions Blog
Patterson Belknap Webb & Tyler LLP is a source for the latest patent decisions from the U.S. District Courts for the Southern and Eastern Districts of New York. The blog is authored by Patterson Belknap’s Patent Litigation practice group, whose members are highly experienced trial attorneys with extensive...

Second Circuit Criminal Law Blog
Patterson Belknap Webb & Tyler LLP 

The Second Circuit Criminal Law Blog is your place to follow the criminal law decisions rendered by the U.S. Court of Appeals for the Second Circuit. With a rich 225-year history of legendary judges like Learned Hand and Henry Friendly, the Second Circuit has long been known for writing important...


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...

Additional Articles

  • 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)