We are Keller & Partner, your experts on intellectual property.

We think as individualists and work as team players. Frequent internal collaboration on cases enables us to optimally bring our diverse expertise and strengths to bear on our clients’ challenges.

Our Patent Attorneys

Werner Roshardt
(Partner)
Swiss Patent Attorney
European Patent Attorney
Dipl. Phys. ETH

+41 52 209 02 80
w.roshardt(at)kppat.com

Philipp Rüfenacht
(Partner)
Swiss Patent Attorney
European Patent Attorney
Dipl. Phys. University of Bern

+41 31 310 80 80
p.ruefenacht(at)kppat.com

Roman Stäbler
(Partner)
Swiss Patent Attorney
European Patent Attorney
Dipl. El.-Ing. ETH

+41 31 310 80 80
r.staebler(at)kppat.com

Hannes Spillmann
(Partner)
Swiss Patent Attorney
European Patent Attorney
PD in Experimental Physics / Nanosciences
at University of Basel
Dipl. Chem. University of Zurich

+41 52 209 02 80
h.spillmann(at)kppat.com

Mirko Schade
(Partner)
German Patent Attorney
MBA, Dipl.-Ing.

+49 89 54 80 37 37
m.schade(at)kppat.com

Justin Hoppler
Swiss Patent Attorney
European Patent Attorney
Dipl. Phys University of Bern

+41 31 310 80 80
j.hoppler(at)kppat.com

Stephan Kessler
Swiss Patent Attorney
European Patent Attorney
M.Sc. Biochemistry, University of Bern

+41 31 310 80 80
s.kessler(at)kppat.com

Samuel Gutmann
Swiss Patent Attorney
European Patent Attorney
Dipl. Chem. FH, Dipl. Math. University of Bern

+41 31 310 80 80
s.gutmann(at)kppat.com

Susanne Finklenburg
Swiss Patent Attorney
European Patent Attorney
M.Sc. Phys. University of Bern

+41 52 209 02 80
s.finklenburg(at)kppat.com

Franz Möltgen
European Patent Attorney
German Patent Attorney
Dipl.-Ing. Mechanical Engineering

+49 89 54 80 37 37
f.moeltgen(at)kppat.com

Our Administration

Melanie Arnold
Head of Administration

+41 31 310 80 80
m.arnold(at)kppat.com

Anita Wielgoss
Deputy Head of Administration

+41 31 310 80 80
a.wielgoss(at)kppat.com

Hannah-Laura Frisch
Office Management

+41 31 310 80 80
h.frisch(at)kppat.com

Janine Fey-Gut
Administration

+41 31 310 80 80
j.fey-gut(at)kppat.com

Cornelia Kocher
Administration

+41 31 310 80 80
c.kocher(at)kppat.com

Benjamin Klopfstein
Administration

+41 31 310 80 80
b.klopfstein(at)kppat.com

Martina von Ulmenstein
Administration

+41 52 209 02 80
m.ulmenstein(at)kppat.com

Ruwen Leopold
Administration

+41 31 310 80 80
r.leopold(at)kppat.com

Raquel Viana
Administration

+41 52 209 02 80
r.viana(at)kppat.com

Abirrami Navarajasingam
Administration
Lilia Günther
Administration

+49 89 54 80 37 37
l.guenther(at)kppat.com

Thanushi Thangavelu
Administration

+41 31 310 80 80
t.thangavelu(at)kppat.com

Our Students

Fabienne Gürtler
IT

+41 31 310 80 80
f.guertler(at)kppat.com

Sebastian Fernandez
IT

+41 52 209 02 80
s.fernandez(at)kppat.com