Salvatore R. "Sal" Guerriero

Thomas Hinchey is a top attorney recognized by Best Lawyers in the practice area(s) of Product Liability Litigation - Defendants. Thomas, who practices law in Berwyn, Pennsylvania, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas 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.

Nina K. Markey is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Nina K., who practices law in Philadelphia, Pennsylvania, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Nina K. is held by other top lawyers in the same geographic and legal practice area.

Robert C. Jefferson, IV is a senior associate attorney at Gawthrop Greenwood, PC who focuses his practice on municipal government law, as well as land use, land development and zoning. A former Assistant District Attorney, Jefferson spent six years at the Chester County D.A.’s Office prosecuting 19 jury trials and more than 20 bench trials for criminal cases ranging from felonies to misdemeanors. His career in public service, along with experience navigating the adversarial court system...

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

Andrew Knox joined Timoney Knox as an associate in 2018 and concentrates his practice in the area of education, trust and estates litigation, personal injury, medical malpractice, product liability as well as commercial and civil litigation. While working full time, Mr. Knox attended the evening Division of Widener University School of Law. Mr. Knox is following in the footsteps of his great-grandfather, grandfather, father, and uncle in practicing law. Mr. Knox has been honored with inclusio...

Stephen J. Olsen is a member of Gawthrop Greenwood’s Trusts & Estates Department, practicing in the areas of Estate, Trust Administration, Estate Planning Taxation, and Business Transactions. He is also one of the few Pennsylvania attorneys in private practice with a wide breadth of experience supporting the legal needs of medical marijuana operators. Recently Stephen’s Cannabis Law practice has expanded to provide support to medical marijuana permittees in operation after Pen...

Kristine Grady Derewicz represents employers in all aspects of labor and employment law, ranging from proactive counseling to litigation, in both union and non-union settings. She has tried numerous discrimination and Family and Medical Leave Act cases to successful resolutions, including mediated settlements and jury trials, and she has substantial knowledge of: Title VII and Title IX The Americans with Disabilities Act The Fair Labor Standards Act The National Labor Relations Act She appear...

Sol H. Weiss is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Sol H., who practices law in Philadelphia, Pennsylvania, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sol H. is held by other top lawyers in the same geographic and legal practice area.

For over 30 years, partner John Livingood has defended insured and self-insured entities in casualty litigation. He represents individuals and local, regional, and national corporations in complex, high-exposure litigation throughout Pennsylvania and New Jersey. John has extensive major jury and non-jury trial experience in the Philadelphia region, having tried over 50 matters to verdict. He regularly serves as excess counsel for carriers, assuming responsibility for and trying cases anywhere...