In May and August 2015, Monsanto announced that it had made private proposals to Syngenta’s board of directors for a business combination of Monsanto and Syngenta, which were rejected by Syngenta. Lenz & Staehelin advised Monsanto in relation to its proposals.

The team included Rudolf Tschäni, Hans-Jakob Diem and Simone Ehrsam (corporate) and Jean-Blaise Eckert and Pascal Hinny (tax).