An assay on the exhaustion of method patents in Switzerland by Christian Ebner, Demian Stauber and Alfred Köpf has recently been published in the current issue of Life Science Recht No. 4, 2022: "Exhaustion of Method Patents in Switzerland: "Sell Someone an Inch and They'll Take a Mile"?.
Link to the website:
https://lsr.recht.ch/de/artikel/03lsr0422auf/exhaustion-method-patents-switzerland-sell-someone-inch-and-theyll-take-mile