About Attorney Frederick J. Dorchak

  • Earned AV® Preeminent™ Peer Review Rated by Martindale-Hubbell® due to the recommendations of clients and peers for his outstanding service and expertise.
  • Prosecuted thousands of patent applications in a broad range of state-of-the-art technologies in the fields of chemistry, mechanics, biotechnology, and computer systems.
  • Protected the intellectual property rights of clients by successfully negotiating and litigating settlements to patent and trademark infringement cases.
  • Conformed expertly foreign and PCT applications to United States Patent and Trademark Office standards.
  • Coordinated with numerous clients to prosecute U.S. priority applications internationally.
  • Specialized in patent and trademark prosecution for over forty years, dedicating himself to provide his clients with the broadest possible protection of their intellectual property assets.

Prior Experience

  • Worked for two prominent New York City intellectual property law firms, where he represented a number of multi-national clients.
  • Contributed to the litigation team that successfully defended a multi-national chemical company against an action brought by the U.S. Department of Justice to cancel an extremely valuable agricultural chemical patent.
  • Participated in the trial of the Fonar v. General Electric case involving magnetic resonance imaging.

Professional Associations

  • American Bar Association
  • American Intellectual Property Law Association
  • Federal Circuit Bar Association
  • New York Bar Association
  • New York Intellectual Property Law Association
  • Nassau County Bar Association (Chair of the Intellectual Property Law Committee, 2001–2003, 2020-2022)
  • Suffolk County Bar Association (Co-Chair of the Intellectual Property Law Committee, 2020-2022)
  • Great Neck Lawyers’ Bar Association
  • Director, International Intellectual Property Society, 2005–present
  • President, International Intellectual Property Society, 2008–2010
  • Chair of the New York Intellectual Property Law Association Committee on Patent Law and Practice, 1998–1999
  • International Association for the Protection of Intellectual Property (AIPPI)

Publications and Presentations

  • Author of the Licensing Law Section of the New York Intellectual Property Law Association “Annual,” 1998–2003
  • Noted speaker on patent litigation issues for various bar associations Articles published in the “Attorney of Nassau” and the “Suffolk County Bar Journal”

Bar Admissions

  • New York, 1980
  • U.S. Court of Appeals – 2nd and Federal Circuits
  • U.S. District Courts – Eastern, Northern and Southern Districts of New York and Eastern District of Wisconsin, District of Connecticut, and District of Colorado
  • Registered to practice before the U.S. Patent and Trademark Office, 1978

Reported cases

  • American National Can Co. v. Continental PET Technologies Inc. 37 U.S .P. Q. 2d 1793 (D. Conn.1995)
  • Max Planck Gesellschaft Zur Foederung Der Wissenschaften E.V. v. General Electric Co., 858 F. Supp. 380, 32 U.S.P.Q. 2d 1152 (S.D.N.Y.1994)
  • United States of America v. FMC Corporation, 210 U.S.P.Q. 486 (E.D.Pa 1981)
  • Markman v. Westview Instruments, No. 95-26 (U.S. Supreme Court) on the amicus curiae brief
  • Hilton Davis Chemical Co v. Warner-Jenkinson Co., No. 93-1088 (U.S. Court of Appeal for the Federal Circuit) on the amicus brief for the American Bar Association


  • J.D., cum laude, St. John’s University School of Law, 1979 Editor of the St. John’s Law Review Survey of New York Practice
  • S.B., Chemistry, Massachusetts Institute of Technology (M.I.T.), 1976

Practice Areas