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René Thornfeldt

Partner, Attorney-at-Law


Phone: +45 3945 2908

Mobile: +45 3078 6708



Janie Maxwell

“René Thornfeldt is inducted to the Hall of Fame as one of the elite leading lawyers for seven consecutive years”

Legal 500, 2018

“Highly regarded”

IFLR1000, 2018

“He is a fierce negotiator and is really on the client's side”

TMT - Chambers & Partners, 2017

“René Thornfeldt receives praise from clients, such as: "He is very fast-thinking and has a depth of knowledge in IT outsourcing. His business understanding is also second to none."”

TMT - Chambers, 2016

“René Thornfeldt is exceptional”

Information Technology - Legal 500, 2016

“René Thornfeldt is listed as "Leading Individual". ”

Information Technology - Legal 500, 2016

“René Thornfeldt has ‘a high level understanding of complex IT and consultancy contracts’”

Information Technology - Legal 500, 2015

“Interviewees are quick to praise René Thornfeldt, highlighting his direct approach and ability to handle complex outsourcing projects. His expertise extends to IT and telecoms contracts”

TMT - Chambers Europe, 2014

“René Thornfeldt is listed as Leading Individual ”

Information Technology - Legal 500, 2014

“René Thornfeldt is recommended for his edication and hands-on, well-prepared approach”

Information Technology - Legal 500, 2013

“René Thornfeldt is singled out for his expertise in the IT field. Clients praise his business-oriented approach and remarkable communication skills”

Intellectual Property - Chambers Global, 2013

“René Thornfeldt is singled out for his deep commercial insight and understanding of IT transactions ”

Information Technology - Legal 500, 2012

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René Thornfeldt is a certified IT attorney and also holds a BSc in International Business.

René Thornfeldt has a broad professional background within proprietary projects with special expertise in technology law (IT-, telecommunications- and technology-driven contracts). René typically advises in connection with large outsourcing and system acquisition projects. Moreover, he provides advice to a number of companies on a permanent basis, including multinational groups and organisations concerning their current operations and especially in connection with reorganisations. He is very business-oriented and well-known for his experience as a strategic advisor and an advisor in connection with risk analysis as well as the drafting and negotiation of complex agreements. Finally, René has assisted with the sale and purchase of technology-based businesses for several years.

René has special experience in working within regulated businesses, including within the financial and pharma industry.

René is recognised by the international legal rating agency, Legal 500, as a leading individual within IT law in Denmark and has won ILO's Client Choice Award within "Information Technology" in Denmark several times. Furthermore, René is listed as an expert within the fields of "Information Technology" and "Data" by international research agency "Who's Who Legal".

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Teaching and publications

René teaches in-house and external courses for our clients on information technology, life science and contract law issues. René also teaches courses on outsourcing and operating agreements to members of the Association of Danish IT Attorneys etc.

René is the co-author of the IT Manual (IT-håndbogen), 2nd edition, Børsens Ledelseshåndbøger (Børsen's Management Handbooks).

Moreover, René has written the article "BIG DATA − Juridiske udfordringer og råd i forbindelse med kommerciel udnyttelse" (BIG DATA − Legal challenges and advice in connection with commercialisation) published in the Danish trade journal "Revision & Regnskabsvæsen" no. 8, 2013, and "BIG DATA - Utilisation and legal implications within the EU", published in January 2014 in Lawyer Monthly Global Expert Guide 2014 – Intellectual Property.

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Languages and memberships

Scandinavian languages and English


Danish Bar and Law Society

Association of Danish IT Attorneys

The Danish Forum for IT-Law


Danish Association for Protection of Industrial Rights

The Danish Company Law Association

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Other Offices

René is an experienced umpire and arbitrator. René har previously been a member of the board of directors of the Association of Danish IT Attorneys.