Filtration Group acquires Oxyphen: the advisors

Filtration Group (Chicago), an affiliate of Madison Industries, acquired Switzerland based Oxyphen, an innovator in track-etched membranes. Track-etched membrane is a high-precision manufactured film used in critical applications for life science, automotive, industrial and consumer markets. Oxyphen’s track-etched membrane solutions complement the product offering and manufacturing capability within Filtration Group’s business.

The teams

Walder Wyss advised the seller on the transaction, acting as Swiss counsel. The team has been led by partners Maurus Winzap (tax – pictured) and Urs P. Gnos (corporate/m&a) and further included partner Irène Suter-Sieber (employment), counsel Janine Corti (tax) and associate Angela Kummer (corporate/m&a).


Bär & Karrer and Hengeler Mueller acted as legal advisor to Filtration Group. Also Filtration’s general counsel John Lavorato worked on this  transaction.