People

We are a Boutique Law Firm founded by two highly experienced attorneys.

Matti Nousiainen

Attorney, Trained on the Bench

matti.nousiainen(at)tnlaw.fi

044 532 5904

Matti is an expert in resolving complex commercial disputes related to business operations. He is an experienced counsel for companies and management in business-related criminal matters.

Matti’s expertise includes legal issues related to management liability and freedom of expression. His professional focus also covers disputes involving trade secrets, employee inventions, copyrights, and insolvency proceedings, which he has successfully handled.

Matti’s clients include small and medium-sized enterprises, listed companies, and public sector organizations.

Matti also serves as an arbitrator.

Qualifications
  • Master of Laws 2007
  • Trained on the Bench 2011
  • Admitted to the Bar 2012
Career
  • Tirronen & Nousiainen Attorneys Ltd, Parner
  • Berggren Oy, Head of Dispute Resolution
  • Roschier Attorneys
  • Uoti & Sotamaa Attorneys
  • District Court of Pirkanmaa

Lasse Tirronen

Attorney, Trained on the Bench

lasse.tirronen(at)tnlaw.fi

044 079 1503

Lasse is an accredited mediator by the Centre for Effective Dispute Resolution (CEDR). He has successfully mediated several significant commercial disputes and currently serves as the Chair of the Mediation Committee of the Finnish Bar Association.

Throughout his career, Lasse has assisted hundreds of businesses and individuals in litigation and dispute resolution, handling cases related to damages, trade secrets, real estate law, construction, residential property transactions, and estate assets.

Lasse has over 10 years of experience in entrepreneurship and the legal profession.

He has established himself as a trusted estate administrator in extensive and contentious estates.

Qualifications
  • Master of Laws 2007
  • Trained on the Bench 2009
  • Admitted to the Bar 2014
Qualifications
  • Tirronen & Nousiainen Attorneys Ltd, Parner
  • Tirronen Attorneys, Partner
  • Court of Appeals of Eastern Finland
  • District Court of Kymenlaakso
Positions of Trust
  • Chair, Mediation Committee of the Finnish Bar Association, 2022–
  • Chair, Southeast Section of the Finnish Bar Association, 2024–
  • Member, Board of the Finnish Bar Association, 2018–2024
  • Appointed Investigator, Ministry of Justice (“Report on Developing Out-of-Court Dispute Resolution”), 2022
  • Member, Consumer Disputes Board, Housing Transactions Division, 2017–2022
  • Member, Mediation Committee of the Finnish Bar Association, 2016–