Michael J. O'Brien

James H. Heller, chair of the firm's Products Liability Practice Group and vice chair of the Commercial Litigation Department, joined the firm in August 1985. Jim is a member of the firm's Board of Directors. Jim practices out of the Philadelphia office. Jim handles complex commercial disputes and catastrophic personal injury claims. During his tenure at Cozen O’Connor, Jim has had extensive litigation experience, trying more than 50 cases to verdict or judgment in state and federal cou...

Nancy B. G. Lassen is a partner in the Philadelphia office of Willig, Williams & Davidson. Nan has focused her practice on labor law at WWD since 1984. Nan grew up in Detroit, MI in a family with strong ties to labor. Her father (a disabled veteran) was a Teamster. Her mother was a UAW member. And her grandfather was a Steelworker. Nan herself has been a tireless and courageous advocate for working men and women for decades. Working in industry since age 15, including on a Chrysler assemb...

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.

Alexander L. Scarola is a top attorney recognized by Best Lawyers in the practice area(s) of Public Finance Law. Alexander L., 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 Alexander L. is held by other top lawyers in the same geographic and legal practice area.

Vanessa Albert Lowry focuses her practice on tax, public finance, and asset securitization matters, as well as investment and repurchase agreements.

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...

For more than 30 years, co-founding partner Ezra Wohlgelernter has maintained a diverse practice portfolio including a successful history of motor vehicle and truck litigation, premises liability claims, medical negligence litigation, and significant personal injury claims. Ezra has represented victims of unsafe working environments, drunk driving and trucking accidents, operating room neglect, and civil rights violations. Ezra’s robust legal experience spans a broad spectrum of areas a...

David Senoff is a founding member of First Law Strategy Group, LLC and has focused his career on class action lawsuits in important public policy fights for the public and plaintiffs. Senoff represents clients in class actions, appellate advocacy, insurance bad faith, bet-the-company litigation, affirmative litigation for governmental entities, and campaign and election law problem solving and litigation for candidates, political parties, and other political action committees. When Senoff and...

R. Christopher Raphaely is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. R. Christopher, 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 R. Christopher is held by other top lawyers in the same geographic and legal practice area.

Jason Krasno is the only 3rd generation workers' compensation lawyer in the state of Pennsylvania. He is the Managing Partner of Krasno Krasno & Onwudinjo. Additionally, he is the 2011 Co-Chairman of the Philadelphia Bar Association Workers' Compensation Section and holds a seat on the Board of Governors for the Pennsylvania Association for Justice. In his role with Krasno Krasno and Onwudinjo, Jason is a litigator first and foremost. He spends the majority of his day battling insurance c...