Georgios K. Patsalosavvis

Jennifer M. Horn is an accomplished attorney with comprehensive experience in client representation and litigation. She has built her practice representing owners, construction managers, contractors, subcontractors, suppliers, sureties, and homeowners in matters arising from public and private construction projects. Jennifer leads the Horn Williamson Construction Practice Group. She has extensive skill representing clients with delay claims and routinely works with expert witnesses to prosecu...

David Kwass is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

Philip G. Kircher handles a wide variety of complex commercial litigation in state and federal courts including securities, antitrust, shareholders' rights, business and real estate joint ventures, corporate governance, breach of fiduciary duties and general breach of contract matters. Philip has represented manufacturers, wholesalers, retailers, hospitals, doctors, food service operators, software designers, architects, engineers, constructors, schools, banks, state and local governments and...

Howard is a nationally recognized real estate attorney who has been representing developers, operators, investors, and lenders in their most complex transactions for more than 30 years. He is a leading practitioner in the joint venture arena, adept at structuring sophisticated, multi-party agreements, and negotiating transactions involving diverse capital sources such as private equity, public finance, preferred equity, and senior debt. Howard also focuses his practice on guiding development ...

Matthew L. Wilson is a partner at Martin Law and has practiced Pennsylvania workers’ compensation law exclusively for more than 25 years. He started his career representing agencies with the City of Philadelphia, major insurance carriers and self-insured corporations. After Mr. Wilson’s affiliation with two major defense firms, he was recruited by his partners in 1993 to protect the rights of injured workers. In the spring of 2015, Mr. Wilson became a certified specialist in Penns...

Joe concentrates in state and local taxation, regularly assisting business and individual taxpayers regarding corporate, financial institution, sales and use, income, real estate, transfer, and all other state and local taxes. A former chief counsel of the Pennsylvania Department of Revenue, he has since represented hundreds of taxpayers — including businesses, individuals, and nonprofit entities — in state and local tax planning, administrative, legislative, and litigation matter...

Eric Schreiner is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Eric, 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 Eric is held by other top lawyers in the same geographic and legal practice area.

David J. Colleran is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. David J., who practices law in Philadelphia, Pennsylvania, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David J. is held by other top lawyers in the same geographic and legal practice area.

Carter N. Williamson is a construction practice attorney who has represented construction industry clients including contractors, subcontractors, suppliers, and owners. He has a background in litigating and resolving legal construction matters from routine common disputes to complex, multi-party litigation. He has resolved construction matters through litigation, arbitration and mediation in the five-county Philadelphia area, the United States District Court for the Eastern District of Pennsy...

Rick Holzworth’s practice focuses on fiduciary litigation in administrative proceedings, trial courts, and appellate courts. His clients include individuals, corporate fiduciaries, non-profit entities, and closely-held businesses throughout Pennsylvania and across the country. He has significant experience in a variety of matters involving estates, trusts, guardianships, powers of attorney, and charitable interests. Rick frequently speaks and writes on fiduciary litigation and estate an...