Melissa L. Greenberg

Vivian Hanson is Co-Head of the U.S. Sourcing Group. Her practice is focused primarily on complex, large-scale outsourcing transactions, as well as domestic and cross-border transactions involving the transfer of intellectual property rights in a variety of industries, including information services, information technologies, financial services, life sciences, new media, and entertainment. She also advises Japanese clients and is fluent in Japanese. She has extensive experience in outsourcing...

Paul M. O'Connor III is a lawyer recognized by Best Lawyers in the practice area of Litigation - Real Estate. Paul M. practices law in New York, New York Best Lawyers has recognized Paul M. O'Connor III since 2024. 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 Paul M. O'Connor III is held by other lawyers.

Edward H. Gersowitz is one of the co-founders of Gersowitz, Libo & Korek, P.C. In addition to handling the firm’s pharmaceutical, motor vehicle, premises, municipal liability and toxic tort cases, he also oversees the firm’s daily activities and philanthropic endeavors.Education & Employment HistoryMr. Gersowitz received his Bachelor of Science at Cornell University. He then embarked upon his formal legal education and received his Juris Doctor at Benjamin N. Cardozo Schoo...

Pamela C. Jeffrey is a lawyer recognized by Best Lawyers in the practice area of Labor Law - Union. Pamela C. practices law in New York, New York Best Lawyers has recognized Pamela C. Jeffrey since 2020. 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 Pamela C. Jeffrey is held by other lawyers.

Effie Blassberger is a trial attorney whose practice spans white-collar criminal defense, employment disputes, and commercial litigation. She has been recognized in The Best Lawyers in America for Criminal Defense: White-Collar in each edition from 2024 through 2027. A significant part of her practice involves #MeToo litigation, where she has represented high-profile clients on both the plaintiff and defense sides. That dual perspective informs her strategy in these cases, and she has secured...

Richard H. Block is a partner in Barton’s labor and employment practice. Dick routinely represents management clients in collective bargaining negotiations and complex employment litigation. He regularly conducts human resource investigations, discrimination, harassment, wrongful discharge, and contract litigations. Dick represents both companies and executives in the negotiation of employment, equity, and severance agreements. He advises and trains clients on employment and labor issue...

Darron E. Berquist is the managing attorney for the firm’s asbestos practice serving clients nationwide and a dedicated New York City mesothelioma lawyer. In addition to representing individuals with asbestos-caused diseases such as mesothelioma, lung cancer, and ovarian cancer, he assists the firm’s pharmaceutical and product liability groups, particularly on matters related to expert witnesses. Mr. Berquist manages the litigation side of the firm’s asbestos practice, overs...

Zhanna A. Ziering, a tax controversy and litigation attorney, is a founding member of Ziering & Esman PLLC. Ms. Ziering’s practice focuses on representing individual and entity clients in civil and criminal tax disputes with federal and state governments as well as in regulatory proceedings. She defends both individual and entity taxpayers before the U.S. Tax Court, federal and state courts, and administrative agencies, including the Internal Revenue Service, the Department of Justi...

David M. Slutsky is a lawyer recognized by Best Lawyers in the practice areas of Labor Law - Union and Litigation - Labor and Employment. David M. practices law in New York, New York Best Lawyers has recognized David M. Slutsky since 2019. 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 David M. Slutsky is held by other lawyers.

Christine A. Okike is a lawyer recognized by Best Lawyers in the practice area of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. Christine A. practices law in New York, New York Best Lawyers has recognized Christine A. Okike since 2026. 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 Christine A. Okike is held by other lawyers.