Firm Profile > SIRIUS advokater > Copenhagen, Denmark

SIRIUS advokater

Environment Tier 2

SIRIUS advokater advises on general public law, including administrative law, environmental law and planning law. The firm also has expertise in relation to environmental law applying to agriculture and EU environmental law. The practice is headed by Søren Stenderup Jensen and Kurt Helles Bardeleben, who joined in July 2019 from DLA Piper Denmark; they advise on nature protection, regulations to fight climate change as well as on expropriation, public utilities and litigation within public law.  

Other key lawyers:


Deep insight in legislation and very experienced

Søren Stenderup Jensen has a broad view, is calm and has a trustworthy behaviour

Key clients

Københans Lufthavne A/S (CPH)

ELF Development A/S

NCC Industry A/S

Trelleborg AB

Telenor A/S

Teliam, Filial af Telia AB

Nordic Waterproofing A/S

Hessel Pharma ApS

Kvadrat Soft Cells A/S

Arwos Forsyning A/S

Din Forsyning A/S

SK Forsyning A/S

NK-Forsyning A/S

KLAR Forsyning A/S

Oxfam IBIS

Clearidium A/S

Municipality of Gladsaxe


UTH Holding ApS

Taasinge Elementer A/S


Brøndby Fjernevarme

Real estate and construction Tier 3

The practice at SIRIUS advokater has experience in advising public institutions, developers, investors and contractors on real estate transactions and due diligence matters as well as on construction and procurement law. The practice also advises on planning law and environmental regulations. Additionally, the teams assists with the renegotiation of construction and project development contracts. Michael Vindfeldt and Liv Helth Lauersen regularly advise on PPP projects, urban development and social housing matters.


‘Excellent on construction law and the team is flexible.’

‘SIRIUS advokater’s professional, dedicated and client-friendly mindset are the main reasons why I have been very satisfied working with SIRIUS advokater over the past years.’

‘The team is carefully representing the client’s interests but also dedicated to find fair solutions.’

‘Sirius’ lawyers are highly skilled experts, they know every corner of real estate and construction law. They are ambitious and thorough, and take great pride in doing their best – every time. When the situation calls for it, they are innovative and able to think out of the box. We are confident, that our legal matters are handled in the best possible way.’

‘The team at Sirius has a keen eye for providing first class commercial advice while balancing the necessity for maintaining the legal angle.’

‘Liv Helth Laursen and Michael Vindfeldt are their strongest cards.’

‘Liv Helth Lauersen stands out with her exceptional skills and experience in real estate and housing. She is intelligent, ambitious, trustworthy and reliable, and always focused on helping her client ind the best possible way.’

‘Michael Vindfeldt is one of the most professional and well rounded legal minds I have ever met.’

Key clients


Instalaciones Inabensa SA

CSK Stålindustri A/S

Faxe Kommune

DSV Road A/S

AKF Holding A/S

COBE arkitekter

Elindco Byggefirma


SK Forsyning A/S

Taasinge Elementer A/S

Entreprenørfirmaet Einar Kornerup A/S

UTF Holding ApS

UTF Invest Nordsjælland ApS

Stay Properties ApS

Esbønderup Invest ApS

Viggo Pedersen & Søn A/S Byggeentreprise

Nectar Asset Management ApS

Sund & Bælt Holding A/S

Københavns Kommune

Køge Kommune

Erhvervsakademi Sjælland



Allerød Kommune




Dispute resolution Tier 4

With expertise in cross-border and domestic mediation, arbitration proceedings and court litigation arising from environmental construction disputes, SIRIUS advokater also handles claims in the public utility sector, local administrative decisions and infrastructure planning litigation. The team also has notable capacity to act in employment and labour law claims including executive compensation and benefits disputes. Mediation expert Benjamin LundströmSøren Stenderup Jensen and arbitration specialist Kurt Helles Bardeleben jointly lead the practice; Bardeleben joined the group in 2019 from DLA Piper Denmark.


‘A very specialised team in construction law, broad competences within dispute resolution, including mediation, and professional attitude.’

‘Sirius advokater are expert lawyers who always take great care in meeting their clients needs – they fully understand our way of doing business. They are highly skilled and experienced in dispute resolution, and have taken numerous cases to court for us. We are fully confident that this is done in the best possible way, and we usually win! A number of the cases have been significant leading cases concerning construction law. Sirius lawyers are highly respected among judges and legal colleagues. The people at Sirius are always kind and accommodating, easy to reach and the price is reasonable.’

‘Deep knowledge of construction law and practices in Denmark, so they inspire confidence in their recommendations. Also, very involved in the case.’

Key clients

The Danish Mediation Institute

The Danish Institute of Arbitration

The Danish Mediation Lawyers

Copenhagen City Court, Court Mediation

Eastern High Court, Court Mediation

The Maritime and Commercial High Court, Court Mediation

The Danish Arbitration Board

The Danish Court Administration, Court Mediation


Faxe kommune (municipality)

SK Forsyning A/S

Hessel Pharma

Telenor A/S

Instalaciones Inabensa SA

Sirius Company A/S

Mr. Per Moesgaard

PROSA labour union

Ase (Unemployment insurance and labour union)

Danish Broadcasting Corporation

Entreprenørfirmaet Einar Kornerup A/S

CSK Stålindustri A/S

DJØF labour union

Københavns kommune

Køge Kommune


Allerød Kommune




Fredensborg Kommune

Employment Tier 4

SIRIUS advokater is praised for its expertise in contentious employment matters including investigations and compliance issues, and also represents clients in litigation, mediation and arbitration proceedings relating to severance agreements and the termination of employment contracts. Pernille Backhausen and Benjamin Lundström jointly lead the practice, which also advises on executive compensation and benefits matters, and restructuring procedures.

Other key lawyers:


Best legal advice on HR and employment issues; transparent and reasonable billing practice

A forward thinking and dynamic firm with a modern approach to law

Excellent, knowledgeable and very prompt to respond

Benjamin Lundström is a highly knowledgeable, professional and likeable top lawyer. Highly focused on client interest, speed and quality

Benjamin Lundström is a strong litigator and very bright

Key clients


Roskilde Festival and Roskilde Festival Charity Society

Bikuben Foundation

Medpro Group

BLS Capital Group

The Danish School for Authors

SAS Institute A/S

Per Moesgaard




Connect Denmark


Nordic Solution

Simple Revolution

PROSA labour union

Naturkraft Foundation

Commercial, corporate and M&A Tier 5

SIRIUS advokater has expertise across corporate and commercial law regulations and handles domestic and cross-border M&A transactions including assisting with the establishment of businesses and subsidiaries in Denmark. The practice is also experienced in the IP elements of M&A transactions including securing IP rights. Corporate and M&A expert Joachim Ørum Petersen and commercial contracts specialist Gitte Løvgren Larsen jointly lead the department.

Other key lawyers:


SIRIUS advokater’s professional, dedicated and client-friendly mindset are the main reasons why I have been very satisfied working with SIRIUS advokater over the past years. SIRIUS advokater’s strengths and key capabilities are their short response time, high level of advice and their broad commercial understanding. Compared to other law firms, I believe that I get very good value for money

The house covers all aspects of law. They are professional and work great as a team

SIRIUS advokater has a very easy going but at the same time very dedicated mindset. I think they are very competent, and I have been very satisfied working with SIRIUS advokater over the past many years. One of SIRIUS advokater’s strengths is their broad commercial understanding

Straight forward way of working, not complicating things leading to very reasonable pricing of services provided

Sirius is a truly unique firm. They bring real expertise and experience to every assignment.  In addition, they do not just talk about core values, they keep true to those values too

Good level of competence in a wide number of areas. Clear information when the issues need attention from someone else with greater expertise

Gitte Løvgren Larsen is an outstanding lawyer. She has been super professional throughout many years of cooperation

Joachim Ørum Petersen is very experienced and competent within Commercial contracts and Corporate law & M&A and he always provides commercial and to-the-point advice. Furthermore, he has a strong understanding of how the client thinks and he always acts in the client’s interest. Finally, I would like to stress that he is very service minded and a very skilled negotiator

Key clients

Calldorado ApS

Nordic Corporate Investment A/S


Jespers Torvekøkken ApS

Spring Nordic ApS and CAT Fonden

Carve Consulting P/S

BLS Finans A/S /BLS Capital Fondsmæglerselskab A/S

Bikuben Fonden

Fonden Roskilde Festival


Nordic Waterproofing A/S

Taasinge Elementer A/S

Kvadrat Soft Cells A/S

Fire Eater A/S

CEMS ApS and subsidiaries

Thiim A/S

Schades A/S and subsidiaries

EPAM Systems ApS

Nordic Solution A/S

Simple Revolution ApS

Siteworks ApS



WorldTicket A/S

Wolters Kluwer/CT Corporation


Connect Denmark

The firm: SIRIUS advokater was founded some 12 years ago by Pernille Backhausen. The overall goal of SIRIUS advokater is to deliver clear legal solutions precisely reflecting our clients’ needs. We believe that this is best done by acting in a professional and personable fashion both internally and externally. We are strongly committed to continuous training and treating each other with respect, supporting a proper work life balance and being a responsible player within society.

SIRIUS advokater has grown considerably over recent years and now has more than 35 lawyers.  For example, on 1 July 2019  7 lawyers, including two partners joined SIRIUS advokater from DLA Piper. Due to its growth, SIRIUS advokater moved to new and larger premises in the autumn of 2018.

Areas of practice: SIRIUS advokater is a specialized law firm that has exceptional qualifications to carry through clients’ legal challenges within our fields of specialization. The partners are very experienced within the fields in which they work; yet they are curious and committed to expand their  legal knowledge so that the firm’s clients have access to a broader range of advice.

Department Name Email Telephone
Associations and Foundations - Charity Law Kim Pedersen
Associations and Foundations - Charity Law Aleksander Pilgaard
Corporate Law and Mergers and Acquisitions Joachim Ørum Petersen
Corporate Law and Mergers and Acquisitions Benjamin Lundström
Construction Law, Procurement Law, Real Estate and Commercial Leasing Liv Helth Laursen
Construction Law, Procurement Law, Real Estate and Commercial Leasing Michael Vindfeldt
Dispute resolution - litigation, arbitration, mediation and amicable settlements Benjamin Lundström
Dispute resolution - litigation, arbitration, mediation and amicable settlements Søren Stenderup Jensen
Employment and Labour Law Pernille Backhausen
Employment and Labour Law Benjamin Lundström
Insurance and Compensation Helle Hald
Insurance and Compensation Kim Pedersen
Intellectual Property Law Gitte Løvgren Larsen
Tax Kim Pedersen
Public regulation - Environmental law - planning law Søren Stenderup Jensen
Public regulation - Environmental law - planning law Pernille Backhausen
Commercial Contracts Gitte Løvgren Larsen
Danish and other Scandinavian languages