Ralf Rosenow is the founder of OSICOS Ltd. and the Chairman of its Board of Directors. As managing partner of OSICOS he supports and advises numerous Swiss based start-up companies primarily in the life sciences industry as outsourced in-house counsel applying the OSICOS philosophy and making available his 20+ years’ experience as legal counsel for various companies in this industry.


Educated at the law schools of the University of Zurich and the University College London, Ralf was admitted to the Zurich and Swiss bar in 1989. After initial years of practice in renowned law firms in Zurich and London, he co-founded the Zurich based law firm Rosenow Grob Schilling in 2001, which in a merger in 2008 became Blum&Grob Attorneys at Law Ltd, Zurich, where he headed the Life Sciences Working Group as a partner until June 2016. Since then, when OSICOS Ltd became operational, Ralf continues to be Of Counsel of and works closely with Blum&Grob.

Since 1994, Ralf specializes in intellectual property right exploitation contracts, in particular license agreements, but also all sorts of agreements relevant for life sciences or ICT based companies with impact on intellectual property rights, but also such companies’ operations.



In addition, Ralf advises such start-up companies in all legal aspects and further supports, structures and executes their private equity and other forms of financings as well as advises in their exit transactions including trade sales and IPOs. Ralf Rosenow is a member of the Bar Examination Board of the Canton of Zurich and a member of relevant industry related organizations such as the Licensing Executive Society (LES) and the Swiss Healthcare Licensing Group (Swiss HLG).



Alessandra Läser joined OSICOS Ltd. as partner in 2020. In this role she supports and advises as outsourced in-house counsel various Swiss based start-ups.


After her bar exam, Alessandra worked as associate in Zurich and as foreign associate in New York and in such positions gained expansive experience across a wide range of corporate legal questions and challenges a start-up faces. Prior to joining OSICOS Ltd., Alessandra worked with one of Switzerland’s leading law firms in Zurich and Geneva where she advised corporates and individuals on all matters of Swiss business law. Educated at the law schools of the University of Berne, Switzerland, and Utrecht, Netherlands, Alessandra also obtained an LL.M. degree from NYU School of Law and an Advanced Professional Certificate in Law & Business (APCLB) from NYU Stern School of Business.


Alessandra is also CEO of the Zurich based legal-tech start-up Legalligence AG. As a result, she perfectly unites legal know-how and entrepreneurial spirit to deliver impactful and integrated support for start-up companies.

Alessandra is passionate about being the go-to advisor for entrepreneurs in all strategic, legal and financing aspects. Her goal is to lift such burdens from the entrepreneurs’ shoulders to allow them to focus on the development of their business ideas.



Rahel Rosenow is the co-founder and member of the Board of Directors of OSICOS Ltd.

Educated at the law schools of the University of St. Gallen (HSG) and the University of Lausanne, Rahel was admitted to the Zurich and Swiss bar in 1999 and received her LL.M. degree from the Boston University in 2003.

Rahel started her career in a major law firm in Zurich focusing on banking and finance, including venture capital, financing infrastructure projects as well as debt, equity and mezzanine financings for various companies. From 2010 until the beginning of 2020, Rahel was the General Counsel in a privately-owned family office in Zurich, with offices in different countries and a focus on structuring, financing and managing infrastructure, real estate and social development projects in Africa, the Middle East and Europe.

Through her in-sight practical expertise in emerging markets and involvement with numerous social impact projects, Rahel developed a passionate interest in sustainable development and political economy, reason why she is currently attending the MAS Programme «Advanced Studies in Applied Ethics» at the University of Zurich.