Sean-Tamba Matthew

James H. Heller, chair of the firm's Products Liability Practice Group and vice chair of the Commercial Litigation Department, joined the firm in August 1985. Jim is a member of the firm's Board of Directors. Jim practices out of the Philadelphia office. Jim handles complex commercial disputes and catastrophic personal injury claims. During his tenure at Cozen O’Connor, Jim has had extensive litigation experience, trying more than 50 cases to verdict or judgment in state and federal cou...

James M. Kwartnik is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. James M., who practices law in Philadelphia, Pennsylvania, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James M. is held by other top lawyers in the same geographic and legal practice area.

Diana Silva is a partner with Manko, Gold, Katcher & Fox, LLP, where she concentrates her practice in environmental litigation, including statutory contribution and cost recovery actions, toxic tort claims, contractual disputes, and administrative enforcement actions. She also counsels clients on environmental regulatory compliance matters, as well as permitting related to land development issues.

John J. O'Donnell is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. John J., who practices law in Philadelphia, Pennsylvania, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John J. is held by other top lawyers in the same geographic and legal practice area.

Andrew R. Duffy is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Andrew R., who practices law in Philadelphia, Pennsylvania, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew R. is held by other top lawyers in the same geographic and legal practice area.

A graduate of the University of Pennsylvania and its law school, Marc Jonas is co-chair of the firm's Land Use and Zoning practice group. He has extensive experience in real estate, land use, municipal law, and zoning matters, representing individuals, businesses, institutions, non-profit organizations and municipalities. Marc has practiced land use and real estate law for more than 30 years. In his career, Marc has appeared as counsel in Pennsylvania state and federal courts in matters invol...

Michael Fenerty is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Michael, who practices law in Philadelphia, Pennsylvania, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Michael Daly is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs. Michael, who practices law in Philadelphia, Pennsylvania, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Jerry M. Lehocky is a partner at Pond Lehocky Stern Giordano. Mr. Lehocky has been a litigator of workers' compensation and Social Security since being admitted to practice in 1985. Initially, his practice involved representing employers and insurance companies. In 1991, Mr. Lehocky began representing claimants exclusively in the areas of workers' compensation and Social Security disability. A former chairman of the Pennsylvania Trial Lawyers Workers' Compensation Section (for 12 consecutive ...

For over twenty eight years, Nancy J. Winkler has represented individuals and their families in the litigation of complex personal injury matters involving automobile defects, product liability, pharmaceutical liability, medical malpractice, toxic exposure, construction accidents, falls and automobile accidents. Over the years, Ms. Winkler has been able to procure multi-million dollar recoveries on behalf of her clients. Nancy J. Winkler attended the Honor’s Program at Temple University...