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. Languages: German, Italian, English, French.


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

Homburger is ‘at the top of its practice‘ and is regularly instructed by domestic and international blue-chip companies. Team members are well versed in representing clients from regulated industries, such as pharmaceutical, energy and telecoms, in a wide range of arbitration proceedings. Team head Balz Gross is an expert in disputes arising out of contracts. Gabrielle Nater-Bass acts as counsel and arbitrator in international commercial arbitration cases. Mariella Orelli specialises in energy and financial disputes. Stefanie Pfisterer, who made partner in January 2021, senior specialist Felix Dasser and associate Dilber Devitre are other names to note.

Switzerland > Dispute resolution: litigation

Homburger has firmly established itself as a go-to firm for complex, often international disputes. The team has considerable experience in litigation proceedings in regulated industries such as energy, healthcare, banking, insurance and food, where it is able to closely collaborate with other groups of the firm. Practice head Balz Gross‘ expertise ranges from representing clients in commercial courts and criminal proceeding to employment law. Gabrielle Nater-Bass is well versed in private clients and estate litigation, while Mariella Orelli also acts in administrative courts. Other key individuals are the experienced Felix Dasser, banking and insurance specialist Roman Baechler and IP practitioner Andri HessStefanie Pfisterer was promoted to the partnership in early 2021.

Switzerland > Public law

Homburger advises clients active in regulated industries and in sectors including life sciences, telecoms, construction, energy and financial services. The firm’s lawyers are frequently active in international proceedings that involve foreign public authorities and act for sovereign states in international arbitration cases. Marcel Dietrich is head of the competition and regulatory team and advises clients on regulatory matters, compliance and investigations, among others. Mariella Orelli specialises in international dispute resolution and regularly advises foreign states and state-owned companies. Richard Stäuber made partner in January 2020.