Attorney, Partner Topi Lusenius

+358 44 362 3340 LinkedIn

Topi is a business-minded lawyer with strong industry knowledge of ICT and various outsourcing arrangements.

Topi is a business-minded lawyer with strong industry knowledge of ICT and various outsourcing arrangements.

Topi advises regularly domestic and international companies on a broad range of contentious and non-contentious technology and IP related matters, such as outsourcing, procurement and delivery of R&D or IT systems, products and services, software and IP licensing, e-commerce, and data protection. Topi has also acted as an advisor in several technology-driven M&A transactions and capital investments.

Prior to joining Inventio, Topi was a Business Division Leadership Team member in a leading Nordic ICT corporation, responsible for its legal matters. Topi’s in-house background has also developed a results-first approach to his work.

Topi is a frequent lecturer within the fields of contract and IP law.

Main practice areas

  • Commercial agreements
  • ICT, IP, R&D, technology, e-commerce, licensing, cloud, data protection, open source
  • Outsourcing, technology-driven M&A transactions and capital investments
  • Counterfeits, marketing, media
  • Both contentious and non-contentious


  • Inventio Attorneys Ltd
    • Partner (2014-)
  • Tieto Corporation
    • Senior Legal Counsel (2011–2014)
  • Bird & Bird Attorneys Ltd
    • Attorney, Senior Associate (2008–2011)
  • Hannes Snellman Attorneys Ltd
    • Associate (2007–2008)


  • Admitted to the Finnish bar
  • Member of Finnish IT Law Association
  • Member of Finnish Sports Law Association


  • University of Turku, Finland, LL.M (2007)


  • Finnish
  • English


Who’s Who Legal

  • Data – Information Technology (2020, 2021, 2022)
  • Data 2019–2020: Thought Leaders
  • Telecommunications Media & Technology (2016–2017)

Topi Lusenius comes highly recommended by peers as a “superstar” of the Finnish market with “vast knowledge and understanding” of contentious and non-contentious IT matters. (2022)

The “excellent” Topi Lusenius of Inventio Attorneys Ltd is the “go-to IT lawyer in Finland” who gains plaudits as a “versatile TMT allrounder”. (2021)

At Inventio Attorneys, Topi Lusenius has a “very strong outsourcing and general IT law practice” according to sources familiar with his impressive work in IT procurement, e-commerce and software licensing. (2020)

IAM Patent 1000

  • Transactions (2016–2019, 2022)

Regularly sought out to architect high-value deals, Lusenius is a goal-oriented negotiator who sharpened his technical skills in-house at Tieto Corporation, the largest information and communications technology (ICT) service supplier in the Nordics. (2022)

Topi Lusenius is a deft negotiator of IP contracts. With extensive in-house experience on his résumé, the Inventio partner has sharpened commercial instincts. (2019)

Topi Lusenius wields a commercial gift for negotiation that holds considerable appeal. (2018)

Transactional ace Topi Lusenius is a guiding light on R&D arrangements for native high-technology enterprises (2017)

Topi Lusenius keeps his finger on the pulse of technology-related developments and is widely admired for his nimble negotiation skills; with invaluable experience as senior legal counsel at Tieto Corporation – the largest ICT supplier in the Nordic region – he is finely attuned to the demands and pressures of the business world. (2016)

The Legal 500

  • TMT – Next Generation Partner (2020-2022)
  • TMT – Next Generation Lawyer (2018–2019)
  • Intellectual property (2017)
  • TMT (2016–2017)

Topi Lusenius works fast, efficiently and, despite the fact that IT / IT law is very specific area, has ability to communicate very clearly with different stakeholders which allows us to feel very comfortable when cooperating. He has a very structured way of working. His knowledge of the new trends and approach to IT services and software deliveries is always up-to date. And most of all- Topi is extremely good in “translating” client’s needs into contractual terms, he is very thorough, pro-active and forward thinking. He is also very talented negotiator, being able to lead the meetings in highly professional and fruitful manner, he is always appreciated by all the sides of the negotiation table. (2022)

The whole team is excellent, but Topi Lusenius is just brilliant! He combines strong business understanding with great legal skills and is always quickly on top of any new assignments our rapidly growing business has for Inventio. (2020)

Practice head Topi Lusenius is ‘very business-oriented’ (2017 TMT)

Topi Lusenius has ‘a straightforward as well a proactive way of finding solutions’ (2017 Intellectual property)

Topi Lusenius is a rising star. (2016)

Chambers Europe

  • TMT – Band 3 (2020-2023)
  • TMT – Up and Coming (2019)

Topi Lusenius is very good at understanding the strategic needs of different parties. (2023)

Topi Lusenius rises in the rankings due to his excellent standing in the market as an active adviser on IT outsourcing, negotiations in M&A-related matters, and ICT disputes. (2020)

Topi Lusenius of Inventio Attorneys Ltd. is active on distribution agreements, SaaS and R&D contract matters. His clients praise him for “always bringing a business point of view to the table. (2019)

The Best Lawyers™

  • Technology Law (2017–2018)
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