Mr Jeffrey Osterman > Weil, Gotshal & Manges LLP > New York, United States > Lawyer Profile

Weil, Gotshal & Manges LLP
NEW YORK, NY 10153
United States
Jeffrey Osterman photo


Co-Head of Weil’s Technology & IP Transactions practice


Jeffrey Osterman, co-head of Weil’s Technology & IP Transactions practice, concentrates on matters with deep commercial or technical complexity. A major portion of his practice focuses on transactions involving the life sciences industry where he has led negotiations of numerous multi-billion dollar collaboration and license agreements, but he also has extensive experience in a range of transactions relevant to other industries, including those relating to manufacturing, technology transfer, outsourcing, technology integration, and media. His areas of specialty range from treatment of intellectual property in bankruptcy to analysis of open source software issues.


Cornell University (BA, 1992); Harvard Law School (JD, 1995).

Lawyer Rankings

United States > Industry focus > Healthcare: life sciences

Weil, Gotshal & Manges LLP is known for its contentious work, advising on both commercial and criminal litigation, offering particular expertise in patent litigation, where it advises clients such as Regeneron and Johnson & Johnson on the defense of their IP portfolio. The team also acts on government investigations and product liability cases. On the corporate side, the practice advises larger pharmaceutical and technology companies on their acquisitions of smaller, innovative manufacturers. It also has experience acting on Strategic alliances and licensing agreements. The New York office hosts significant portions of the IP team, including co-head Elizabeth Weiswasser, who acts on major patent litigation, and Jeffrey Osterman, who advises on IP aspects of transactions. Silicon Valley-based Edward Reines is also well regarded for his IP and corporate disputes expertise. Derek Walter is based in the same office.

United States > Media, technology and telecoms > Technology transactions

(Leading lawyers)

Jeffrey Osterman  Weil, Gotshal & Manges LLP

Weil, Gotshal & Manges LLP has an ‘exceptionally hard working and diligent‘ team that covers the full suite of M&A, restructuring and standalone technology transactions. The dedicated practice represents a mix of technology and life sciences companies, as well as banks and private equity investors, on their most business critical deals, including domestic and cross-border strategic alliances, IP acquisitions and disposals, research and development agreements, outsourcing transactions and licensing agreements. Key to the team’s popularity is its ‘deep knowledge and experience in the technology field’ including its ‘ability to deal with challenging personalities in stressful negotiations‘. The largely New York-based group is co-chaired by the versatile Jeffrey Osterman and the ‘outstandingCharan Sandhu, who took over from former global practice head Michael Epstein, a partner with over 30 years’ experience in the market. Other key individuals include recently promoted partner Adam Dennis, and Silicon Valley-based partner Karen Ballack who is noted for her ‘great expertise, creativity, and good judgment‘.