3 June 2020 – Filtration Group, Chicago, an affiliate of Madison Industries acquired Wetzikon, Switzerland based Oxyphen, an innovator in track-etched membranes.

Walder Wyss advised the Seller on the transaction, acting as Swiss counsel. The team has been led by Maurus Winzap (Partner, Tax) and Urs P. Gnos (Partner, Corporate/M&A) and further included Irène Suter-Sieber (Partner, Employment), Janine Corti (Counsel, Tax), and Angela Kummer (Associate, Corporate/M&A).