Jon Werner

Thomas G. Wilkinson, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Ethics and Professional Responsibility Law and Professional Malpractice Law - Defendants. Thomas G., who practices law in Philadelphia, Pennsylvania, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas G. is held by other top lawyers in the same geographic and legal practice area.

Raymond L. DeLuca has 20 years of experience as a construction lawyer who represents owners, contractors, and design professionals in all phases of the construction and dispute resolution process. He has litigated numerous significant construction claims, from the owner, contractor, and design professional's perspectives, and has tried cases in state and federal courts, and in arbitrations. In addition, Raymond has drafted and negotiated design, construction, and procurement contracts for maj...

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.

The Honorable Geoffrey W. Dlin (ret.) has returned to private practice and joined KK &O after serving more than 15 years as a Workers' Compensation Judge. As a judge, he decided thousands of contested workers' compensation cases and frequently taught other lawyers, judges and private organizations about workers' compensation matters. In addition to those traditional roles of a judge, Geoff developed a statewide mediation practice. His skills in settling workers' compensation cases were hi...

David A. Ebby is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. David A., who practices law in Philadelphia, Pennsylvania, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David A. is held by other top lawyers in the same geographic and legal practice area.

Steven G. Wigrizer is an experienced trial attorney who has been repeatedly recognized as one of the best in his field. His devotion to and compassion for his clients have earned him a high level of client loyalty, while his preparation and understanding of complex cases have won him the respect of his opponents and colleagues. Few lawyers can match this unique combination. Mr. Wigrizer concentrates his practice in complex civil litigation including medical malpractice , products liability , ...

Doreen Y. Trujillo is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Doreen Y., who practices law in Blue Bell, Pennsylvania, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Doreen Y. 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.

Brett Zeitlin is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Brett, who practices law in Philadelphia, Pennsylvania, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brett is held by other top lawyers in the same geographic and legal practice area.

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...