Firm Profile > Python > Geneva, Switzerland


Real estate and construction Tier 2

Python's strengths lay in residential and commercial real estate transactions and construction projects as well as environmental matters and the setting up of real estate funds. Its work often has cross-border aspects. Practice co-head Marc Iynedjian in Geneva is a specialist in sale and leaseback transactions. He leads the team jointly with Sion-based Christophe de Kalbermatten, who is active in M&A. Olivier Klunge is a key contact in Lausanne.

Practice head(s):

Marc Iynedjian; Christophe de Kalbermatten


The team is very client focused, highly experienced and knowledgeable.’

Marc Iynedjian is an invaluable business partner, always protecting his client’s interests. He is very pragmatic, diligent, professional and business oriented.

Key clients

Finartis Properties SA

Banking and finance: Geneva Tier 3

Python's banking and finance practice covers a wide spectrum of matters, ranging from assistance with the set up of Swiss banks and collective investment schemes, internal investigations and enforcements to commercial and private banking transactions. The client portfolio consists largely of national and international banks and funds. Nicolas de Gottrau has an active banking practice alongside handling matters relating to contract law, insolvencies and disputes. Jean-Yves Rebord is an expert in collective investments.

Practice head(s):

Nicolas de Gottrau; Jean-Yves Rebord


The lawyers are tremendously competent, responsive and available.’

The team is always open to find new solutions and has a pragmatic approach.

Intellectual property Tier 3

Python handles contentious and non-contentious contractual or transactional IP matters. These involve trade mark conflict defence and enforcement cases, the protection of companies against various infringers, and advice on influencer, distribution and non-disclosure agreements. Key name Felix Locher has experience before the Swiss Federal Administrative Court.

Practice head(s):

Felix Locher

Leading firms: French-speaking Switzerland Tier 3

Full-service law firm Python is regularly instructed in matters related to banking, corporate, real estate, tax and private client matters. Key practitioners of the firm are Nicolas de GottrauMarc IynedjianEtienne von StrengChristophe de Kalbermatten and Homayoon Arfazadeh.

Tax Tier 3

The Geneva-based tax team at Python covers the full gamut of matters in the space; it recently was involved in various restructurings for private clients and family offices, and also assisted with relocations and acquisitions. Etienne von Streng is experienced in acting before various Swiss authorities as well as in all sorts of transactions. Per Prod’Hom is also well versed in corporate taxation and VAT. Frédéric Gante is also highlighted.

Practice head(s):

Etienne von Streng


Python has a unique partner-to-client relationship which is proactive and also flexible in terms of having interactions. The team also has a vast amount of experience and its responses are practical.’

Etienne von Streng provides the perfect mix of professionalism and creativity.’

Commercial, corporate and M&A Tier 4

Python combines expertise in commercial contracts with strength in corporate and M&A matters. Areas of expertise include mergers, stock purchases, and asset purchase agreements, as well as reorganisations, among others. Marc Iynedjian leads the team and has notable knowledge in the energy sector. Other prominent practitioners are Christophe de Kalbermatten and Benjamin Humm.

Practice head(s):

Marc Iynedjian


The availability of the Python M&A team is outstanding and it can provide a “one-stop shop” for all aspects related to the acquisition process.’

The team is very skilled, organised and efficient. It is committed to the client’s needs and provides client-oriented solutions.’

Benjamin Humm has extensive experience, availability, reactivity, and is open to contrasting points of view.

Marc Iynedjian is very competent, approachable and responsive. He has a very good understanding of the energy sector and always proposes pragmatic and legally sound solutions.’

Key clients


Steihoff International Holdings

Vima Link

Dispute resolution: litigation Tier 4

Python's team covers a wide spectrum of commercial litigation matters, including banking, civil cases and employment disputes. The team is also active in insolvency proceedings, where Nicolas de Gottrau is a key contact. Dominique Henchoz handles contentious employment and immigration matters. Homayoon Arfazadeh is also noted.

Private client Tier 4

Python covers key private client matters, including wealth structuring, financial planning and pensions, foundations and asset protection, among others. Jean-Christophe Hocke and Thomas Steinmann are the key contacts. Ingrid Iselin left for Kellerhals Carrard in 2019.

The firm: Python is one of the major full scope Swiss firms in terms of size and resources with the know-how and facilities to enable it to play a significant role on the Swiss and international scene. Originally founded in 1981 by four partners in Geneva, the firm now also has offices in Lausanne, Bern, Sion and Zug. In order to have a link to the EU, a liaison office was established in Brussels in 1997. High quality, efficiency, responsiveness and flexibility are the firm’s guiding principles. With its cadre of 50 experienced, multilingual lawyers, the firm offers legal services in 11 practice areas. Clients include major international corporations, financial institutions, start-ups, partnerships and private individuals from Switzerland and all over the world.

Areas of practice
Arbitration: Our arbitration practice attorneys advise clients on Swiss and international commercial arbitration with a unique insight into many different industries.

They have served as counsel or arbitrators in complex, prominent cases under the rules of all the major arbitration institutions and systems, including ICC, LCIA, Swiss Rules, SCC, VIAC, WTO, WIPO, ICSID, CAS and UNCITRAL, as well as in ad hoc arbitrations.

They have strong academic backgrounds and several have published textbooks and articles in international arbitration and regularly appear as speakers at important conférences.

Banking and finance: Our banking and finance practice attorneys advise Swiss and foreign banks, asset managers, securities dealers and other financial institutions on an all-encompassing range of activities.

From setting-up and licensing Swiss banks and subsidiaries, to setting up branches and representative offices of foreign banks and securities dealers in Switzerland, to advising on the structuring of all types of collective investment vehicles, the licensing of investment funds in Switzerland, anti-money laundering regulations, compliance, FINMA authorizations and enforcement matters.

Commercial contracts: Our commercial contract practice attorneys advise clients on the broadest possible range of local and cross-border contracts such as investment contracts, e-commerce, partnerships, joint ventures, international sales including commodities, airplanes, ships, agency contracts, exclusive distribution, franchising, maritime or road transport.

Corporate and M&A: Our corporate and M&A practice attorneys advise clients on the full range of corporate and M&A activities.

From assisting with all stages of local and cross-border mergers, acquisitions and reorganizations (working in partnership with law firms from other jurisdictions when necessary), to company sales and structuring, management and ownership successions, stock, share and asset purchase advice and related document drafting, to negotiating representations and warranties, to advising on and preparing disclosure schedules, side agreements and financing documents among others.

Employment and immigration: Our employment practice attorneys advise clients on employment contracts, health and safety regulations, maternity/paternity rights, settlement agreements, unfair dismissal claims, redundancies, disciplinary procedures, layoffs, disputes etc and also represent them before employment tribunals.

Our immigration practice attorneys successfully advise clients on obtaining Swiss residence/work permits and all related necessary formalities: permit renewals/extensions, changes of canton, job, marital status, departures, official certificates or statements, customs clearances etc.

Intellectual property, IT and telecoms: Our IP attorneys advise our clients on how to best protect, benefit from, optimize and defend their intellectual property, including patents, trademarks, designs, and copyright, whether in Switzerland or abroad. They advise our clients in IP related litigation and arbitration proceedings and have significant experience in contractual/transactional IP matters, such as licensing agreements, research, development and cooperation agreements, non-disclosure agreements, technology transfers and distribution agreements. Furthermore, we provide a full range of trademark and design services. We are frequently involved in multi-jurisdictional matters.

International legal assistance and criminal law: Our international legal assistance and criminal law practice attorneys advise clients on mutual legal assistance matters and related areas.

These include international police cooperation, Interpol notices, information exchange between financial regulatory authorities, enforcement of embargoes and international assistance in civil matters, banking and professional secrecy, asset localization, asset freezing/recovery, extradition etc.

Our attorneys also assist and represent our clients in white-collar crime proceedings, money laundering proceedings and disclosure proceedings.

Litigation and insolvency: Our litigation and insolvency attorneys advise and represent clients before all Swiss civil, commercial and administrative courts.

They also assist with the enforcement of Swiss and international judgments and insolvency decisions as well as with obtaining evidence.

All fields of commercial disputes are covered, including banking cases, bankruptcy and debt collection litigation, commercial contracts, civil cases (divorce, alimonies for children, liquidation of estates), employment disputes, IP protection and enforcement, provisional remedies, enforcement of foreign judgments, insolvency, debt restructuring etc.

As some of the cases we deal with are cross border, our attorneys are at also ease with the complex nature of private international law.

Private clients: Our private client attorneys advise HNW Swiss and international clients on a broad range of matters, including wealth structuring, financial planning and pensions, asset protection, the incorporation and administration of foundations, charities, companies and trusts, Swiss residence, nationality and real estate matters, marriage (pre-nuptial agreements, matrimonial regime contracts), divorce and child custody matters, Swiss life and health insurance planning, estate planning, resolving local and cross-border inheritance disputes, the taking-public of closely-held businesses, philanthropy, private investments, family office services, structuring outward and inward investment, sophisticated tax planning etc.

Real estate and construction: Our real estate and construction practice attorneys advise clients on residential and commercial real estate transactions and construction projects and have closed some very large real estate and construction transactions in Switzerland.

They assist with obtaining permits to acquire and build Swiss real estate, real estate financing, the sale, purchase and lease of commercial/residential real estate, sale and lease-back transactions, general contractor agreements, construction contracts, Swiss real estate environmental matters and real estate litigation and arbitration.

Tax: Our tax attorneys advise clients on a full range of services in connection with their private and commercial tax affairs such as planning, solving and negotiating tax rulings on all issues of Swiss federal, cantonal, inter-cantonal and international taxation, including without limitation, direct income and capital taxes, double taxation, withholding taxes, stamp duties and VAT, the restructuring, sale or the succession of their business, the structuring of their estate and tax optimization of foreign clients wishing to invest in or relocate to Switzerland.


Department Name Email Telephone
Arbitration Homayoon Arfazadeh
Banking and finance Nicolas de Gottrau
Commercial contracts Thomas Steinmann
Corporate and M&A Marc Iynedjian
Employment and immigration Dominique Henchoz
IP, IT and telecoms Felix Locher
International legal assistance and criminal law Homayoon Arfazadeh
Litigation and insolvency Nicolas de Gottrau
Private client Jean-Christophe Hocke
Real estate and construction Marc Iynedjian
Tax Etienne von Streng
Photo Name Position Profile
 Benjamin Humm  photo Benjamin Humm Benjamin Humm is an expert in Corporate and M&A (including shareholders’ agreements,…
 Marc Iynedjian  photo Marc Iynedjian Partner specializing in: * Corporate and M&A * Contracts * Real Estate…
Number of partners : 17
Number of lawyers : 48
Other offices : Bern
Other offices : Brussels
Other offices : Pully/Lausanne
Other offices : Sion
Other offices : Zug