Dittmar & Indrenius is well known for its expertise in cross-border and domestic arbitration, commercial litigation, mediation, and dispute management, with significant experience in privacy and data protection disputes. The firm represents clients from a wide range of industries, including the healthcare, telecoms, automotive, technology, education, aviation, and energy sectors. Jussi Lehtinen steers the group and focuses on international arbitration proceedings. Helen Lehto is well versed in handling arbitrations, while Jan Ollila specialises in M&A disputes.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Good advocates, clear, to the point, experienced.’
  • ‘Dittmar & Indrenius is leading in complex disputes. They take control, focus on matters of importance and deliver beyond what is expected.’
  • ‘Helen Lehto is a rockstar in the legal community and always our go-to in disputes.’
  • ‘Very versatile team composition enables different angles and out-of-the-box thinking. Excellent ability to listen to client's needs and wishes and translate these into winning solutions. Flexibility and co-operation, also with possible other legal teams. Very high engagement and commitment.’
  • ‘A small and mighty team with renowned and respected practitioners. The firm has a long history of innovation and aims to think ahead and accompany its clients in cutting-edge challenges and evolution.’
  • ‘Jussi Lehtinen and Helen Lehto are dynamic and commercial in their approach. They know their clients and their businesses well and have creative and pragmatic solutions. They are also renowned and respected in the arbitration field.’

Key clients

  • Caruna Oy
  • OP Group
  • Auris Kaasunjakelu Oy ja Haminan Kaasuverkko Oy
  • Forex AB
  • Veho Oy Ab
  • City of Espoo
  • S-Bank Plc

Work highlights

  • Represented Caruna in market court proceedings appealing against the Energy Authority's decision concerning the monitoring of pricing of network operators.
  • Represented OP Group in a preliminary ruling request to the Court of Justice of the European Union and related national proceedings, currently pending in the Supreme Administrative Court.
  • Represented Ahlsell in substantial competition infringement proceedings at the Finnish Competition and Consumer Authority and the Market Court.

Lawyers

Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Practice head

The lawyer(s) leading their teams.

Jussi Lehtinen

Other key lawyers

Helen Lehto, Jan Ollila