Brian Hennessay Lawyer

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Brendan D. Hennessy, Esquire provides an assortment of legal services, focusing on Employment Law and Civil Litigation. In addition to representing businesses and employees in employment disputes, Mr. Hennessy has helped dozens of high-level executives negotiate employment and severance agreements. He also regularly mediates employment disputes and offers fixed rates.

Mr. Hennessy has been recognized as a “Rising Star” in the area of Employment Law by Super Lawyers Magazine (2012 - 2015) and a “Top Lawyer” in the area of Employment Law by

Hennessy Law Firm has its primary location in Malvern, Chester County but has meeting space for consultations in King of Prussia, Radnor, Bala Cynwyd, Plymouth Meeting, Philadelphia or Marlton, New Jersey.

Call 484-875-3111 to set up a consultation.


Brian Hennessey joined Carter DeLuca in 2017 as counsel to the firm.  Mr. Hennessey has practiced intellectual property law for more than fifteen years in New York City and California’s Silicon Valley.  He provides strategic counseling for both start-ups and established companies, and advises clients in a wide variety of matters relating to patents.  Mr. Hennessey prepares and prosecutes domestic, international and foreign national patent applications, provides opinions, and performs due diligence.

Mr. Hennessey’s undergraduate engineering studies provided exposure to a wide range of technologies, specializing in electrical and mechanical systems.  He gained valuable technical experience working with an oilfield services company, where he specialized in geo-location technology. His interests in law, business, and engineering led him to a career as a patent attorney.



  • J.D., University of California, Hastings College of the Law
  • B.S. in Engineering, Interdisciplinary Engineering, University of Michigan – Ann Arbor.


  • States of New York and California
  • District Courts for the Southern and Eastern Districts of New York
  • District Courts for the Northern, Central, and Southern Districts of California
  • United States Patent and Trademark Office

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