Sonja Heiskala > Avance Attorneys Ltd > Helsinki, Finland > Lawyer Profile

Avance Attorneys Ltd

Work Department

Intellectual Property and Data Protection, Compliance, Technology and Innovations, Games and Entertainment, Media and Communications

Sonja specializes in intellectual property matters, with experience in technology transactions, licensing, and intellectual property disputes from various industry sectors. She also advises clients in data protection and other regulatory matters, including the EU General Data Protection Regulation (GDPR) and protection of privacy in the employment and healthcare contexts. Sonja regularly lectures and writes on data protection topics.


Senior Associate


Avance Attorneys Ltd, Senior Associate 2020-
Roschier, Attorneys Ltd, Associate, IP & Technology (2017-2020)
Avance Attorneys Ltd, Trainee (2016-2017)
Ministry for Foreign Affairs of Finland, EU Litigation Unit, Trainee (2015)
Hannes Snellman Attorneys Ltd, Associate Trainee, IP & TMT (2014)
Roschier, Attorneys Ltd, Research Trainee, IP & Technology (2013)


Master of Laws, University of Helsinki, 2017 (Willem C. Vis International Commercial Arbitration Moot 2015-2016)

Lawyer Rankings

Finland > Commercial, corporate and M&A

Avance Attorneys Ltd focuses on advising mid to large size European and Asian corporations and private equity groups on high-end, complex M&A and inbound investments into Finland and the Nordics more broadly, and is particularly experienced in transactions in the healthcare, industrial, technology, energy, and gaming industries. Ilkka Perheentupa is ‘extremely versatile‘ in his in M&A work in the fund and industrial sectors; Ulf-Henrik Kull ‘excels‘ in private equity transactions, usually with a cross-border element; Carl-Henrik Wallin  focuses on complex transactions related to the nuclear power industry, often advising on governance issues; and Mathias Lindqvist is ‘commercially strong‘, especially in real estate transactions. Anders Floman  is also a key name for private equity and venture capital work in the energy, infrastructure and technology sectors, and Erkki-Antti Sadinmaa acts for fund and industrial clients. The transactions team has recently grown; senior associate Valtteri Tapala  joined from Dittmar & Indrenius, senior associate Niklas Suni  joined from Borenius, and senior associate Sonja Heiskala  joined from Roschier.