Ra-in Mariella Orelli > Homburger > Zurich, Switzerland > Lawyer Profile


Work Department

Litigation, Arbitration.


Partner. Domestic and international commercial litigation and arbitration. Primary focus on representing parties in energy related matters, corporate matters and matters relating to mergers and acquisitions (including joint ventures), insurance, crossborder sales, long-term supply contracts, construction projects and pharma.


Qualified in 1996. Partner at Homburger since 2007. Law clerk with the Commercial Court of the Canton of Zurich. Foreign associate at Herbert Smith.


German, Italian, English, French.


Zurich and Swiss Bar Associations, IBA, ASA, LCIA.


University of Zurich (lic iur), College of Europe of Bruges (LLM).

Lawyer Rankings

Switzerland > Dispute resolution: arbitration

With ‘a highly experienced team with great visibility in arbitration matters’, Homburger is a go-to name for blue-chip clients in regulated industries, with notable knowledge of the financial services, life sciences, energy and telecoms sectors. The large team has varied counsel and arbitrator expertise and has seen notable growth following the promotion of Stefanie Pfisterer to partner in 2021 and the recruitment of associate Jonathan Silberstein-Loeb in mid-2021, who is an English-qualified barrister and member of the New York bar. Balz Gross heads up the department, which also fields energy and financial services sector expert Mariella Orelli, the ‘extremely collaborativeGabrielle Nater-Bass and Felix Dasser, who is the president of the Swiss Arbitration Association. At the junior level, associate Dilber Devitre is a key name.

Switzerland > Dispute resolution: litigation

Homburger’s ‘highly experienced’ team features a deep bench of highly regarded practitioners including practice co-heads Balz Gross and Roman Baechler, who specialise in employment and insurance litigation respectively; Mariella Orelli, who handles disputes with an Italian angle as well as energy litigation; private client, trust and estate expert Gabrielle Nater-Bass and ‘excellent litigatorFelix Dasser, who primarily acts in investment disputes. The group has notable experience in acting as lead counsel in cross-border litigation for a high-profile client roster which features UBS, Swisscom, The Swatch Group and other blue-chip listed companies. The team is also highly regarded for its expertise in regulated sectors, particularly the pharmaceuticals, healthcare, banking, insurance, energy, telecoms and transport industries.

Switzerland > Public law

At Homburger, advice on public law is provided in particular in conjunction with the regulatory, compliance, investigations, financial market regulation, competition and arbitration teams. The unit is therefore particularly experienced in acting for clients from the regulated sectors, frequently acting in compliance matters and investigations where public law matters are at the centre, such as financial services, energy, transport, telecoms, and construction. Further, advice is provided to municipal, cantonal and federal bodies. The team heads Marcel Dietrich and Mariella Orelli are experienced in competition and public procurement matters as well as administrative proceedings.