For more than 15 years, James Major has counseled a variety of clients in successfully navigating complex intellectual property matters within the biotechnology and pharmaceutical fields including, most recently, biopharmaceuticals, vaccines, genetics, gene therapies, small molecules, and pharmaceutical formulations. His doctorate in immunology and virology allows him to apply innovative research skills to improving client outcomes. He also takes a practical approach to patentable subject matter issues to obtain desired results in this complex and fast-moving area of law.

James is experienced in rendering patentability, white-space, freedom-to-operate, noninfringement and invalidity opinions, particularly in the fields of biologics, gene therapies, cell-based immunotherapies, CAR T-cells, small molecules and pharmaceutical formulations. He has also assisted clients with licensing, due diligence and litigation matters.

James has represented clients in trademark-related matters, including preparing and prosecuting trademark applications as well as opposition, cancellation and district court proceedings. He takes a keen interest in advocacy relating to intellectual property matters and has submitted amici briefs to the U.S. Supreme Court and the U.S. Patent and Trademark Office.


Prior to joining Armstrong Teasdale, James was counsel in the New York City office of a large Philadelphia-based law firm. He was also principal of his own firm focusing on intellectual property issues affecting entrepreneurs.


  • New York Law School  (J.D., magna cum laude, 2011)
    • New York Law School Law Review (Staff Editor)
    • John Marshall Harlan Scholar
    • Member of Institute for Information Law and Policy
    • Dean’s List
    • Trustees’ Prize Candidate
  • University of Oxford  (D.Phil., 2003)
    • Physiological Sciences (Immunology and virology)
    • Medical Research Council Student
  • University of Cambridge  (B.A., 1996)
    • Natural Sciences (Pathology)


  • New York
  • U.S. Patent and Trademark Office
  • U.S. Supreme Court
  • U.S. Court of Appeals, Federal Circuit
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, Southern District of New York

Professional Activities

  • New York City Bar Association, Committee on Patents, Amicus Subcommittee (Co-chair)
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