26.6.2024

Topi Lusenius joins Castrén & Snellman’s Data & Technology team as Partner

Related services

Castrén & Snellman is expanding its Data & Technology service and has invited Topi Lusenius, an expert in demanding ICT contract law, outsourcing and technology-driven M&A transactions, to join the team as its partner. In addition, three top-notch technology lawyers will be joining the firm with him. With these appointments, the firm aims to support its clients’ growth and strengthen its position as the leading advisor in data and technology projects.

‘With the digital revolution, technology advisory has become strategically important for an increasing number of companies. Our clients need a trusted advisor for these demanding situations. As a leading ICT contract law expert, Topi is an excellent addition to our team and a business-oriented partner for our clients’ important growth projects. I wish him and his team a warm welcome to our firm,’ says Sakari Lukinmaa, Managing Partner of Castrén & Snellman.

Castrén & Snellman has a widely known and recognised position in data protection and data regulation issues and related regulatory processes and disputes. With Topi’s appointment, our Data & Technology service will be exceptionally strong and unique in the market.

‘New technologies and artificial intelligence have become part of everyday business life, and data has a key role in developing successful business. Investments in digital transformation are expected to double in the coming years. Topi is a highly valued advisor and colleague. We look forward to working with him on joint projects,’ say Eija Warma-Lehtinen, partner specialising in data and privacy matters, and Kim Parviainen, partner specialising in technology regulation and litigation.

‘Castrén & Snellman’s uniquely broad and high level of expertise covers the full scope of business law. This supports our clients in rolling out technological changes and finding growth opportunities. Effective collaboration between specialists in different fields enables us to build a team that is tailored to the client’s needs. It all comes down to what our clients need for their business. It will be a great pleasure to work on future projects and join forces with the firm’s various practices. In addition to working with Eija and Kim, I look forward to working with top experts in mergers and acquisitions, private equity, and competition law, among others,’ says Topi Lusenius.

Topi Lusenius has a long and varied experience in technology and contract law. He advises domestic and international companies on cross-border projects such as digital transformation, outsourcing, product development, technology-driven M&A transactions, venture capital and litigation. Prior to joining Castrén & Snellman, he was a partner at Inventio, a law firm specialising in business law. Topi is ranked among Finland’s leading advisers by international legal directories such as Chambers Europe and The Legal 500.

In addition, the team will be complemented by three new data and technology lawyers, with Onni Ogbeide, Joel Aaltonen and Teo Sommardal joining Castrén & Snellman.

Joining Castrén & Snellman’s Data & Technology team, Topi will co-head the practice with Eija Warma-Lehtinen and Kim Parviainen. Eija is one of the top names in data protection law both in Finland and abroad, advising businesses on issues such as data protection audits and related disputes and criminal proceedings. Kim is a long-standing IP lawyer specialising in regulatory advice and dispute resolution in the digital world.

Latest references

We acted as Finnish law legal adviser to the lenders and the export credit agencies in connection with the EUR 514.4 million green project financing for the development and construction of Easpring Finland New Materials Oy’s cathode active material (CAM) manufacturing plant in Kotka, Finland. The borrower, Easpring Finland New Materials Oy, is a joint venture owned by Beijing Easpring Material Technology, Finnish Minerals Group and LG Energy Solution. The financing was provided by six international commercial banks, with Société Générale acting as financial adviser and mandated lead arranger together with Natixis as co-mandated lead arranger, and DNB, ICBC, ING and Standard Chartered participating as lenders, with support from the export credit agencies Finnvera and Sinosure. The project represents a significant milestone for Finland and the European battery value chain by strengthening Europe’s domestic supply of cathode active materials, a key component in lithium-ion batteries for electric vehicles and energy storage applications. Once the first phase of the project is operational, the Kotka facility is expected to produce approximately 60,000 tonnes of cathode active material annually, making it one of the largest CAM production plants in Europe and supplying leading battery manufacturers across Europe. 
Case published 21.7.2026
We acted as Finnish legal advisor to Delta Capacity in connection with its acquisition of the ready-to-build Karppio battery energy storage system (BESS) project from Helios Nordic Energy. The acquisition was made and the project will be implemented together with Strioga Family Foundation. The Karppio BESS project is located in Teuva, Finland, and has a capacity of 125 MW / 300 MWh. Delta Capacity will lead the remaining development of the project through to commissioning, planned for 2027, and will serve as long-term asset manager. Delta Capacity is a Swiss-based developer of utility scale battery storage systems. The acquisition adds to Delta Capacity’s growing Nordic portfolio. 
Case published 20.7.2026
We advised Swedbank AB (publ) on the refinancing of a large Finnish retail real estate portfolio owned by Trophi’s Finnish subsidiaries. Trophi is the leading Nordic real estate company focusing on grocery anchored retail properties, with 278 properties across Sweden and Finland. Finland is a market that continues to develop and is also strategically important for Trophi, accounting for approximately 30% of Trophi’s letting and property value.
Case published 17.7.2026
We are acting as Finnish legal advisor to HANZA in connection with its acquisition of Fortaco Finland’s heavy mechanics and assembly business. The transaction is structured as a combined asset and share acquisition and includes Fortaco Finland’s heavy mechanics and assembly operations in Finland, as well as shares in two Estonian and two Polish subsidiaries. The transaction is expected to close during the fourth quarter of 2026, subject to customary closing conditions, including regulatory approvals. Founded in 2008, HANZA is a Swedish mechanical engineering and electronics contract manufacturing company listed on the Nasdaq Stockholm main list. HANZA has approximately 5,000 employees and annual sales of SEK 10 billion. We advise HANZA on this transaction in collaboration with the Swedish law firm Lindahl.
Case published 15.7.2026