Liza M. Walsh - Walsh Pizzi O

Liza M. Walsh

Listed in Best Lawyers since 2007
Phone: 973-757-1100

Liza M. Walsh is a highly sought-after litigator with experience representing some of the country’s largest and most prestigious companies. She focuses her practice on federal and complex commercial litigation, with an emphasis on intellectual property, antitrust and class action defense matters. In her more than 30 years of experience, Liza has defended major pharmaceutical companies in significant patent litigation and acted as liaison counsel to groups of defendants in multi-party litigation. She has more than 150 published decisions and represents clients from a diverse range of industries, including pharmaceuticals, health and title insurance, financial services, life sciences, technology, and other service and product industries. She has also served as an arbitrator in major commercial proceedings, amid a growing demand for more female representation in the field. Liza is also counsel to Senator Torricelli in his capacity as the Special Master in the enforcement of the largest court-ordered environmental cleanup in the country, involving CERCLA, RCRA, and other state and federal regulations and addressing soil, groundwater, and sediment contamination.


Liza has been named to “Best Lawyers in America” for Commercial Litigation, Patent Law and ERISA Litigation in 2016, following similar recognition for nine prior consecutive years.  Most recently, she was honored by the Executive Women of New Jersey as one of the 2016 “Women of Achievement.”  NJBIZ also selected Ms. Walsh as “Top 25 Leading Women Entrepreneurs of New Jersey” and “New Jersey’s Best 50 Women in Business.” Other honors and credits include “New Jersey Super Lawyers” for eight years, “New York’s Best Lawyers” and “New York’s Women Leaders in the Law” by New York Magazine. A graduate of Seton Hall University School of Law, she received the school’s Distinguished Graduate Award in 2012.


Before founding Walsh Pizzi O’Reilly Falanga LLP, Liza led the litigation practice that was named “Intellectual Property Litigation Group of the Year” by the New Jersey Law Journal in 2014. At the start of her legal career, she served clerkships for the Hon. Clarkson S. Fisher, Chief Judge of the U.S. District Court for the District of New Jersey, from 1985 to 1986, and for Hon. Charles Harrington, J.S.C. of the New Jersey Superior Court, from 1984 to 1985.  An active community advocate, Liza is a member of the Board of the US-Asia Institute, the New Jersey Ballet, and the District Court Historical Society and serves on the Finance Committee for the Roman Catholic Archdiocese of Newark.  She is a Fellow of the American Bar Association.

Manhattan CollegeBA 1981Seton Hall UniversityJ.D. 1984

Office Location

One Riverfront Plaza, Sixth Floor
1037 Raymond Boulevard
Newark, NJ 07102
United States

Practice Areas

Commercial Litigation (Complex Litigation, Government Relations)
Litigation - ERISA
Litigation - Patent