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Barry I. Hollander joined the firm in 2007 as Of Counsel specializing in the drafting and prosecution of patent applications in the food technology, pharmaceutical, and polymer arts with respect to compositions, methods, and apparatus.  Barry has considerable experience working with inventors on patentability analysis, freedom to operate matters, infringement issues, and validity opinions.  He handles contested matters before the U.S. Patent & Trademark Office including interferences and ex parte reexaminations and represents clients on appeals to the PTAB.

Barry also advises clients on international portfolios, due diligence matters, and license agreements.

He also has considerable experience in drafting and prosecuting trademark applications, and providing counseling to clients on registrability, and trademark disputes.

Before joining the firm, Barry was a Patent Examiner at the U.S. Patent & Trademark Office for 4 years and was in private practice for 30 years.


  • Founded and managed a law firm in Fairfax, Virginia for eight years prior to joining Greenblum and Bernstein, P.L.C.
  • Served as in-house counsel for a major U.S. corporate client while in private practice.


  • Engineer, Special Projects, Michigan Consolidated Gas Company – 1970-1973
  • USPTO Patent Examiner – 1973-1977 (analytical chemistry, chemical reactor, refrigeration, cleaning, and single-crystal arts)
  • Patent Attorney – Private Practice – 1977 – 2007
  • Patent Attorney – Greenblum and Bernstein, P.L.C. – 2007-Present

Offices/Professional Activities

  • Institute of Food Technologists
  • Presentation at IFT Annual Meeting on “Patentability Issues in the Food Art” (2014)
  • American Chemical Society (50+ year membership)
  • International Trademark Association (INTA)

Professional Associations and Memberships

  • American Chemical Society
  • International Trademark Association
  • Tau Beta Pi (Engineering Honor Society)
  • Institute of Food Technologists (IFT)
  • Phi Eta Sigma (National Honorary Society)
    Phi Lambda Upsilon (National Honorary Chemical Society)

Representative Publications

  • Hollander, B. (2013) “How Safe is the Safe Harbor Provision of the Hatch-Waxman Act, 35 US.C. §271(e)(1)?” Journal of Generic Medicines: The Business Journal of Generic Medicines Sector, June 2013; vol. 10, 2: pp. 122-130.


  • Spanish (conversational)