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Patrick Blaser

Partner

French English
Assistant : Marcia Knösel

EXPERTISE

Partner at Borel & Barbey, Patrick Blaser advises and represents our clients primarily in real estate law and financial and banking law, defending their interests before civil, criminal, and administrative courts.

In the field of real estate law, he specialises in construction law, land use planning law, tenancy law, and contracts for works, construction, property sales, and brokerage.

His expertise in financial and banking law encompasses mutual assistance in criminal matters and economic crime.

Patrick Blaser also serves as an assessor judge at the Geneva Administrative Court of First Instance.

In addition to his role at Borel & Barbey, he regularly publishes articles in Le Journal de l’Immobilier and has delivered lectures on real estate law, particularly at the Geneva Real Estate Chamber (CGI), as well as on financial and banking law at the Institute for the Fight Against Economic Crime (ILCE) and the Development Institute International (Paris).

He is also the author of several legal contributions published in Les Actes de l’ILCE (Neuchâtel), Banque & Droit (Paris), Cahiers du Bail, and Fampra.ch.

EXPERIENCE

Since 2011 Deputy Judge at the Tribunal administratif de première instance, Geneva
Since 1994  Geneva bar and Partner at Borel & Barbey
2002 - 2006 Colonel, Swiss Military Justice
1995-2004 Deputy Judge at the Court of Justice, Geneva
1987 - 2006 Swiss Military Justice (Investigating Judge, Prosecutor, Court President)
1986 - 1993 Trial Judge at the Tribunal de première instance, Geneva
1983 - 1986  Investigating Judge, Geneva
1981 - 1983 Prosecutor, Public Prosecutor’s Office, Geneva
1979 - 1980 Assistant in intellectual property, Law Faculty, University of Geneva
1979 Lawyer's certificate
1979 Postgraduate Diploma in Law, University of Geneva
1977 - 1979  Law lecturer, École Supérieure de Commerce, Geneva
1976 - 1979 Trainee lawyer at a law Firm in Geneva
1976 Master of Law (MLaw), University of Geneva

RECOGNITIONS

WWL

  • Depuis 2013 : Switzerland  -  Construction & Real Estate

MEMBERSHIPS

  • Geneva Bar Association (ODAGE)
  • Swiss Bar Association (FSA)
  • Association Genevoise de Droit des Affaires (AGDA)
  • Association Européenne pour le Droit Bancaire et Financier (AEDBF)
  • Tribunal arbitral CONSTRUCTION+IMMOBILIER
  • Tribunal Arbitral de l’Économie Immobilière Suisse
  • Association pour l’Arbitrage en matière de Baux Commerciaux (ABC)

NEWS

Tenancy Law and Subletting: A Practical Guide

9 May 2025
Patrick Blaser was the guest on “Les Mardis de l’immobilier” on Tuesday 29 April to discuss tenancy law and the conditions under which a landlord can terminate a lease. The...

Rules governing lease termination

6 June 2024
How does one terminate a lease agreement? What are the conditions for ending a lease before the contract expires and what happens in the event of the tenant’s death? What...

PUBLICATIONS

New lease: “L’avis de fixation du loyer est obligatoire”

21 May 2025
« L’avis de fixation du loyer est obligatoire », Le Journal de l’Immobilier, 21.05.2025   In a recent landmark decision dated 19 March 2025 (ATF 4A_239/2024), the Swiss Supreme Court...

Property tax estimate: “Genève doit revoir sa copie”

7 May 2025
« Genève doit revoir sa copie », Le Journal de l’Immobilier, 07.05.2025   In the popular vote of June 2023, the people of Geneva approved the latest amendments to the...

Eight years of ordeal for the neighbours!

6 March 2025
Huit ans de calvaire pour les voisins!, Le Journal de l’Immobilier, 05.03.2025 In a recent decision (ATF 4A_284/2024 dated 17 December 2024), the Swiss Supreme Court upheld the immediate termination...

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