TZVI HIRSHAUT has practiced intellectual property law for more than 25 years. He has prepared and prosecuted patent applications and engaged in IP litigation, transactions, and due diligence. 

Tzvi’s experience spans a wide range of electrical, computer and other technologies, including broadcast and streaming media delivery and program guides, digital television, cloud computing, wireless mesh networks, satellite communications, e-commerce, computer software, mobile applications, optical discs, video and audio compression, digital signal transport, wireless devices, semiconductors, encryption, automated laboratory diagnostic equipment, exercise equipment, footwear, and toys.  He has also prepared and prosecuted design patents for a range of products.

In addition, Tzvi has extensive experience evaluating patents for multiparty patent pools for various technical standards, including patent pools for optical discs, digital television, and video coding standards.  For over a decade, he helped determine whether or not patents submitted for possible inclusion in a particular patent pool were essential for implementing the technical standard covered by that patent pool. 

Prior to joining the Firm, Tzvi worked at Proskauer Rose LLP, Orrick, Herrington and Sutcliffe LLP, and Amster, Rothstein & Ebenstein LLP.


  • Columbia University School of Law, Harlan Fiske Stone Scholar (1991), J.D., 1992
  • Columbia University School of Engineering and Applied Science, M.S., Electrical Engineering, 1988
  • Yeshiva University, B.A., Physics, magna cum laude, 1987

Bar Memberships

  • Admitted in New York and New Jersey, United States District Courts for the Southern and Eastern Districts of New York, and the District of New Jersey
  • Registered Patent Attorney, United States Patent and Trademark Office