McCarter & English has announced the addition of Diana C. Manning as a partner in its Newark office. Manning brings more than 30 years of experience in complex commercial litigation, appellate advocacy, and legal ethics.
Previously, Manning was with Bressler, Amery & Ross, where she played a key role in developing the firm’s litigation and legal ethics practice. She also served as managing principal and chaired the Business and Commercial Litigation group.
“We are thrilled to welcome Diana to the firm,” said Joseph T. Boccassini, Firmwide Managing Partner. “As one of the most prominent advocates and industry leaders within the state, Diana has built a robust litigation, appellate, and ethics and compliance practice, and we know that her career will continue to flourish at McCarter.”
Manning is recognized for her work representing clients in business disputes, appellate cases, professional liability matters, and issues related to legal malpractice. She advises lawyers and law firms on ethical compliance, risk management, and disciplinary proceedings. Certified by the Supreme Court of New Jersey as a Civil Trial Attorney, Manning has argued before both state and federal courts—including nine arguments before the New Jersey Supreme Court.
She currently serves as Second Vice President of the New Jersey State Bar Association and is set to become its president in 2028. Manning has also chaired ethics committees appointed by the Supreme Court of New Jersey and frequently writes and speaks about attorney ethics and litigation strategy. She contributed to The Law of Lawyer’s Liability: Fifty-State Survey of Legal Malpractice by authoring the New Jersey chapter.
“I have long respected and admired both the professionalism and skill of McCarter attorneys and am excited to be working alongside them in this new chapter of my career,” said Manning. “As I take my practice to the next level, I couldn’t refuse the opportunity to join such a distinguished firm. I look forward to all that we plan to accomplish together.”
Manning earned her J.D. from Rutgers University School of Law and holds a bachelor’s degree in economics and political science from Rutgers College.
McCarter & English provides legal services nationwide for Fortune 100 companies as well as midmarket businesses. The firm focuses on transactional law, intellectual property matters, and complex litigation.
For further information about McCarter & English visit www.mccarter.com.


