The firm was founded in 1945 by Alexandre Hauchmann as an internationally-oriented general practice. Over the years, the firm has gained renoun in international trade and maritime law.

In 1978, Alexandre Hauchmann was joined by Enrico Monfrini, who brought to the firm his knowledge and experience in complex litigation and arbitration, as well as in international tax, banking and finance law.

Gilles Crettol joined the firm in January 2004. His practice mainly focuses on corporate, tax, contract and banking law, as well as trust and estate planning. Gilles Crettol also provides family office services to high net worth individuals taking up residence in Switzerland.

Albert Rey-Mermet joined the firm in December 2004. As a former cantonal judge and scientific collaborator at the Swiss Supreme Court, he reinforces the corporate, contractual, sports and intellectual property practices of the firm, as well as those of litigation and arbitration, in particular as an arbitrator.

Monfrini Crettol & Partners is now composed of eight attorneys (three partners, four associates and one junior lawyer), most of whom have been trained in other prestigious law firms and have gained experience outside Switzerland and/or have pursued advanced studies in international law.

The firm has made its reputation and is determined to maintain it by giving the highest priority to its' clients interests, offering them quality and timely legal services, in strict compliance with ethical rules applicable to the profession of attorney in Geneva.