Daniel Reisner focuses on patent and trade secret litigation, intellectual property licensing, and general complex commercial disputes. His intellectual property experience includes biotechnology, pharmaceuticals, ANDA litigations, medical devices, telecommunications, computers, plastic injection molding manufacture, and aerospace systems.

Mr. Reisner has worked on numerous trials and has broad experience in all phases of litigation. Examples of matters on which Mr. Reisner has worked include representation of Pfizer Inc. in a patent infringement suit brought by the University of Rochester involving Celebrex®, a multibillion-dollar drug for the treatment of arthritis. The case resulted in a victory for Pfizer with a decision by the Federal Circuit upholding the district court's decision invalidating the patent-in-suit on a motion for summary judgment. In a subsequent suit against a generic, Mr. Reisner represented Pfizer in obtaining a victory at trial and affirmance on appeal.

Mr. Reisner also represents clients in telecommunications- and computer-related patent disputes. The technologies involved aspects of broadband data and video transmission, coaxial cable and optical data transmission, headends, data centers, computer networking, satellite communication, NTSC, ATSC, MPEG and DOCSIS standards, videotex, handheld computing, memory, peripherals, and microprocessors.


IAM Patent 1000
Litigation (2019)
Benchmark Litigation
Future Star (2013-2015)
Burton Award
Legal Achievement in Writing (2004)


  • JD, New York University, 1994, cum laude
  • BA, Physics, Wesleyan University, 1991, high honors
  • New York
  • US District Court, Southern District of New York
  • US District Court, Eastern District of New York
  • US Court of Appeals for the Federal Circuit

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