Adrian R. King, Jr.

Jennifer W. Karpchuk represents companies and individuals in various matters related to state and local taxation, with an emphasis on the minimization of state and local tax obligations. She has extensive experience handling state and local tax matters, including those related to: corporate income taxes, franchise taxes, gross receipts taxes, excise taxes, personal income taxes, sales and use taxes, business privilege taxes, and real estate taxes. Jennifer serves in a number of leadership rol...

Partner Robb Fox has a diverse practice involving compliance counseling, litigation and transactional work for clients in the waste, chemical manufacturing and development industries and on behalf of cities and municipalities. He is known nationally for his work under the federal Superfund law including handling many high profile Superfund matters such as the Keystone Landfill matter, featured on 60 Minutes, and the Gowanus Canal and Newtown Creek sites. He regularly litigates Superfund issue...

Melissa Grossman is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Melissa, 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 Melissa is held by other top lawyers in the same geographic and legal practice area.

Lauren Hoye is a top attorney recognized by Best Lawyers in the practice area(s) of Labor Law - Union. Lauren, 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 Lauren is held by other top lawyers in the same geographic and legal practice area.

Walter P. Eells is a partner in the firm’s West Chester office. With over 30 years of litigation experience, he concentrates his practice in the Family and Orphans’ Courts, offering focused and timely advice to clients involving adoptions, guardianships, divorce, custody, support, pre- and postnuptial agreements, and all related litigation and mediation. He previously served as the Chairperson appointed by the Chester County Court of Common Pleas to review and revise the Local Fam...

John represents a broad array of clients, ranging from Fortune 500 companies to smaller closely held businesses, facing diverse environmental issues. John is co-practice leader of the firm's New Jersey practice, is a partner in the firm’s environmental litigation group, and is also regularly called upon by clients to handle site remediation matters and complex negotiations with government entities and private parties. John’s work on contaminated sediment sites and related litigati...

Concentration: Brian represents injured persons and their families in complex personal injury litigation. He concentrates his practice on medical malpractice, products liability, premises liability, crashworthiness, and automobile and construction accidents. Experience: Brian has successfully litigated and tried numerous cases in both Pennsylvania and New Jersey courts on a wide range of issues. His work has resulted in many million and multi-million dollar recoveries for his clients. Brian h...

After nearly thirty (30) years of distinguished full-time practice in the area of Construction Law, Margaret Underwood is now Of Counsel to Horn Williamson. During her full-time practice of law, Ms. Underwood provided high-level legal services to local, national, and international owners, contractors, and subcontractors on many of the largest and most prestigious construction projects located in and around the Philadelphia Area and as far away as Europe and the Marshall Islands. Her extensive...

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.

W. John Vandenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. W. John, who practices law in Philadelphia, Pennsylvania, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which W. John is held by other top lawyers in the same geographic and legal practice area.