Jason E. Kornmehl

Martin B. Wasser, a litigation partner with a broad practice encompassing environmental law, matrimonial law, entertainment—music representations, and governmental relations, is the head of the Environmental Law Department. Prior to joining the law firm in 1977, Mr. Wasser was law clerk to Justice Robert C. Williams of the New York State Supreme Court. Between 1975 and 1977, he served as Special Assistant to the Commissioner of the New York State Department of Environmental Conservation...

Marion Joyce Bachrach is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Marion Joyce, who practices law in New York, New York, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marion Joyce is held by other top lawyers in the same geographic and legal practice area.

Jay Waxenberg has been with the Personal Planning Department of Proskauer Rose LLP since 1984 and is now Chair of the Department. A former member of the firm’s Executive Committee, he focuses his practice on estate and tax planning and estate and trust administration. Jay primarily represents individuals and their estates. He represents many families with significant multigenerational wealth, and has assisted them in the structuring of their estate plans so as to minimize gift, estate a...

David Mallen is an advertising and media attorney who focuses his practice on helping marketers from a variety of industries with national advertising campaigns, analysis of claim substantiation issues, compliance with consumer protection law, and resolution of advertising disputes. An experienced trial lawyer, David represents clients in all phases of litigation in state and federal court and in alternative dispute resolution. As former deputy director of the National Advertising Division of...

S. John Ryan is a partner in Seward & Kissel’s Employee Benefits Group. He joined the Firm in 1998. John advises a variety of clients — publicly and closely held corporations, partnerships, governmental entities, tax-exempt foundations and sole proprietorships — concerning all aspects of employee benefits matters. These matters include representation involving the structuring, drafting, operation, amendment and termination of qualified and non-qualified pension, profit-s...

Mary B. Hevener is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax and Tax Law. Mary B., who practices law in New York, New York, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mary B. is held by other top lawyers in the same geographic and legal practice area.

Chris Gunther has more than 15 years of experience defending individuals and corporations in federal and state criminal investigations and inquiries by government regulators, including the Securities and Exchange Commission. In addition, Mr. Gunther served as an assistant United States attorney in the Eastern District of New York, where he tried many cases and argued frequently before the United States Court of Appeals for the Second Circuit. His trial experience as a prosecutor and defense a...

Douglas I. Koff is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Douglas I., who practices law in New York, New York, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas I. is held by other top lawyers in the same geographic and legal practice area.

Lawrence S. Spiegel has more than two decades of experience advising individuals and corporations in complex criminal and civil matters. He has represented corporations, their directors, officers and employees in cases involving allegations of mail and wire fraud, securities fraud, tax fraud, government program and procurement fraud, bank fraud, consumer fraud and money laundering. He represents clients in connection with federal and state grand jury investigations, in inquiries by regulatory...

Michael L. Urschel is a top attorney recognized by Best Lawyers in the practice area(s) of Securities / Capital Markets Law. Michael L., who practices law in New York, New York, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael L. is held by other top lawyers in the same geographic and legal practice area.