A. Antony Pfeffer


A. Antony Pfeffer has extensive experience representing plaintiffs and defendants in intellectual property litigation matters involving patent infringement and trade secret misappropriation, in state and federal courts as well as before the U.S. International Trade Commission (ITC). He is also experienced in conducting patent office proceedings including inter partes reviews (IPR), reexaminations, and interferences. Mr. Pfeffer’s clients have included Toyota, GE Healthcare, Barnes & Noble, Teva, and Imclone Systems, among others.

An engineer by training, Mr. Pfeffer is adept at applying his scientific knowledge to develop litigation strategies for clients in a range of industries. He has litigated cases involving diverse technologies including medical imaging, diagnostics (both clinical and consumer use), expression of recombinant proteins, small-molecule pharmaceuticals, nutritional supplements, automotive, electronic devices, and computer software.

In addition to helping clients resolve disputes, Mr. Pfeffer handles transactional and licensing work that helps to facilitate his clients’ strategic growth. This includes drafting, negotiating, and counseling clients on commercial collaborations, joint research arrangements, and a diverse range of other transactions. In addition, he participates in patent prosecution, review, opinion, and clearance work in various technology areas.

Admitted In

  • New York
  • United States Patent and Trademark Office

Court Admissions

  • United States District Courts
  • Eastern District of Michigan
  • Southern District of New York
  • United States Courts of Appeals
  • Federal Circuit

Practice Areas

  • Intellectual Property

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