Firm Profile > Python > Geneva, Switzerland


Real estate and construction Tier 2

Mainly active in the French-speaking part of Switzerland, the real estate department at Python is considered to be 'very professional, client focused and reliable'. Key areas of expertise include residential and commercial transactions, construction projects, permit procedures and environmental issues, as well as financing, leasing, contractual and contentious matters. Marc Iynedjian, who 'has the capacity to translate the clients' need into contracts', advised Angelo Gordon and Westcore on the sale of an industrial building in Zurich to Akara Funds, and also assisted Realstone with the $130m share-deal purchase of an office building in Geneva. Clients also recommend the 'responsive and thoroughOlivier Klunge and Christophe de Kalbermatten.

Banking and finance: Geneva Tier 3

Python's range of services include handling regulatory matters such as licensing subsidiaries and investment schemes, assisting with anti-money laundering implementations, international compliance, litigation, investigations, contracts and financial transactions. Nicolas de Gottrau and Jean-Yves Rebord are the main contacts.

Commercial, corporate and M&A Tier 3

The four-partner practice at Python handles corporate advice, reorganisation and transaction matters for domestic and international clients in the French-speaking part of Switzerland. Marc IynedjianChristophe de KalbermattenThomas Steinmann and Benjamin Humm are the key contacts.

Intellectual property Tier 3

The international IP practice at Python assists with contract and transaction matters, trade mark applications and disputes. The team consists of counsels Felix Locher and Dominique Graz.

Leading firms: French-speaking Switzerland Tier 3

Python covers banking, corporate, real estate, tax and private client work. Nicolas de Gottrau, Marc IynedjianChristophe de KalbermattenHomayoon Arfazadeh and Etienne von Streng are the names to note.

Private client Tier 3

Geneva- and Lausanne-based firm Python handles asset protection and succession planning matters, as well as tax, investment and general estate matters in the private client space. The team, which advises many Chinese clients, includes Jean-Christophe HockeThomas Steinmann and Ingrid Iselin Zellweger.

Tax Tier 3

Python creates tax-efficient structures and reorganisation solutions for clients, while also being able to represent them in negotiations regarding tax rulings. Structuring partner Etienne von Streng and Per Prod’Hom, who handles both corporate and private client matters, head the practice, which also includes tax authority expert Frédéric Gante.

Dispute resolution: litigation Tier 4

The unique focus areas of Python's litigation team include London-based private insurance claims involving Swiss banks and fund managers, international inheritance disputes, as well as various commercial, insolvency-related and criminal proceedings. Dominique Henchoz and Homayoon Arfazadeh are the practice heads, while banking litigator Nicolas de Gottrau and administrative law expert Philippe Ciocca are additional key contacts.


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


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 Telecom:

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.


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
 Marc Iynedjian  photo Marc Iynedjian
Number of partners : 17
Number of lawyers : 48
Other offices : Bern
Other offices : Brussels
Other offices : Pully/Lausanne
Other offices : Sion
Other offices : Zug