TRUST has a senior team of highly skilled lawyers with top expertise and long experience in their focus areas. We offer our services to all clients from start-ups to investors and large-scale corporate clients. The strenght of TRUST’s know-how and operating model is the focus on high quality and cost-effective management of assignments.

Leena-Maija Marsio


+358 50 516 9367

Seasoned chief legal counsel with a passion for IPR and contracting, Leena-Maija has 20 years of experience as a company lawyer in software, healthcare and telecom business.

Leena-Maija has directed and developed legal, IPR, information security and risk management teams, in close cooperation with relevant stakeholders and teams. She has launched compliance and whistle-blowing programs, addressing the needs of a public listed company. She has drafted and negotiated large project agreements, digital solution sales, software and patent licensing arrangements as well as research and development agreements in various jurisdictions. She also has extensive experience of negotiating & executing M&A in several jurisdictions and resolving resulting integration challenges; creating and leading programs for effective protection and defense of intellectual property rights; managing several ongoing litigations; managing subsidiaries (establishment, closure, mergers) in more than 20 different jurisdictions and coordinating and managing the work of a global group of outside counsels. 

Leena-Maija Marsio TRUST



LLM (University of Helsinki) 1999
Leadership in Corporate Counsel (Harvard Law School) 2012



Mergers and Acquisitions

Past work

Director, Legal Services and Trademarks, Kolster Oy
Chief legal counsel, F-Secure Corporation
Senior Legal Counsel, Ericsson (Kirkkonummi & Stockholm)
Assistant Legal Counsel, Kone Corporation