Derek R. Layser

Steven E. Angstreich is a trial attorney with more than 50 years of experience representing individuals, businesses, and classes of plaintiffs in complex litigation matters. Based in Philadelphia, Pennsylvania, he serves clients through Weir LLP in a wide range of commercial , environmental , consumer, and professional liability disputes. His practice includes Legal Malpractice Law - Plaintiffs, as well as class action litigation , business litigation, toxic torts, and fiduciary litigation. M...

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...

Morris Wilson Knepp Jacquette, P.C.’s founder, Bob, is well known in the legal community throughout the Greater Philadelphia region for achieving record-setting verdicts and settlements on behalf of his clients. He represents victims of medical malpractice, car accidents, product liability, and criminal securities fraud. He also works as a mediator, arbitrator, and legal expert witness. Bob is both locally and nationally recognized as a talented civil trial lawyer, having achieved Natio...

Timothy D. Rau is a lawyer recognized by Best Lawyers in the practice area of Personal Injury Litigation - Defendants. Timothy D. practices law in Philadelphia, Pennsylvania Best Lawyers has recognized Timothy D. Rau since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Timothy D. Rau is held by other lawyers.

William A. Denmark is a lawyer recognized by Best Lawyers in the practice area of Construction Law. William A. practices law in Philadelphia, Pennsylvania Best Lawyers has recognized William A. Denmark since 2013. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which William A. Denmark is held by other lawyers.

As a civil trial lawyer for the last twenty-five years, Steve Bardsley has developed extensive experience in multiple practice areas, with recognized skill in professional liability, environmental law, and construction law. Whether handling cases before state and federal courts or in arbitration forums, Steve’s primary focus is always on solving client problems in the most efficient and ethical manner. Steve has a proven track record of skillfully handling a wide range of construction m...

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...

Robert Zimmerman is a lawyer recognized by Best Lawyers in the practice areas of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Robert practices law in Philadelphia, Pennsylvania Best Lawyers has recognized Robert Zimmerman since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Robert Zimmerman is held by other l...

John M. Nolan is Managing Shareholder and Litigation Manager of the Philadelphia, Pennsylvania office and a Shareholder in the Morristown, New Jersey office of Jackson Lewis P.C. Mr. Nolan has been with Jackson Lewis since December 1994. Prior to joining Jackson Lewis, Mr. Nolan was an Assistant District Attorney in New York and was a senior associate at a large, full service law firm in central New Jersey. Mr. Nolan is a trial attorney and has tried over 75 jury and non-jury trials to verdic...

Whether in the courtroom or the community, Stewart L. Cohen has worked relentlessly as an advocate on behalf of his clients for over thirty years. Mr. Cohen has achieved seven-figure and higher recoveries for scores of his clients over the course of his career. Mr. Cohen is a shareholder in the firm, focusing his practice on complex civil litigation, including medical malpractice, workplace accidents and class actions. His skill as a trial lawyer has resulted in a long record of successes inc...