If two men agree about everything, then only one of them is actually thinking.


100 rue du Rhône Avocats is run jointly by lawyers Philippe Cottier and Daniel Udry. They have the same outlook, but they never stint when it comes to critically reviewing all cases. The immediate benefit for the client is that there are two pairs of eyes and two sharp minds studying every case. Nowhere else will you find this attention to detail and this systematic appraisal by two experts.


100 rue du Rhône Avocats opened its office in Sion, Valais, on 10 June 2010. Mr Luc Jansen, lawyer responsible for the office, shares the same philosophy as his partners. His experience in the field of administrative law and his notarial practice allow real synergies with the Geneva office.


A wise man is never too trusting … even of himself.

Philippe Cottier

Philippe Cottier was born in 1963. He graduated from University of Geneva School of Law in 1987. Aft...

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Daniel Udry

Daniel Udry was born in 1975. He graduated from the University of Geneva School of Law in 1998 (lic....

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Luc Jansen

Luc Jansen was born in 1959. He graduated from the University of Geneva, School of Law (lic. jur.) i...

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Guillaume Francioli

Guillaume Francioli was born in 1980. He obtained a degree in Monetary and Financial Analysis (lic....

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Sébastien Collart

Sébastien Collart read law at the University of Geneva from which he graduated in 2003. He complete...

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