News : what we are working on


The Fortis case shocked Europe in 2008. In the middle of the subprime crisis, Fortis collapsed resulting in a dismantling operation organized by the Governments

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The Arco case involves nearly 800.000 shareholders of four companies that were established by the most important Belgian union. The problem was that these investment

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In Europe Volkswagen sold approximately 8.5 million cars with the so called “tamper software” and nearly 400.000 of these cars were sold in Belgium. Nearly

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About SQ

SQ is a law firm with extensive expertise in many law fields.

SQ is member of two global networks, Legal Netlink (London) and Global Justice Network (Switzerland), resulting in an international law practice and servicing Belgian as well as International clients. Our seasoned business attorneys act as partners to deliver innovative, pragmatic legal solutions in a cost-effective manner. Our expertise extends across all the major practice areas of law.

SQ is also member of the Union Internationale des Avocats (UIA), providing excellent contacts with premium lawyers all over the world.

At the same time SQ has a friendly, local feel and our lawyers are open and approachable for consumers as well as companies. We pride ourselves on teamwork and a positive can-do attitude.

Clients include individuals as well as companies who need clear Dutch, French, English, or multi-lingual guidance on Belgian and European law, but also international clients such as multinationals and institutions.


Administrative Law

SQ offers expertise in administrative law, public tenders and real estate, and provides consulting and assistance to public entities, and institutions and private.

Art Law

Art law is a combination of legal concepts geared towards coping with the issues related to art creation, ownership and transactions.

Class and Mass Actions

People and businesses can group together to introduce a claim when they have something to demand from the government or from a common opponent. But companies also can face class actions, started by consumer organisations.

Company Restructuring

SQ has extensive experience in assisting companies with restructuring and reorganizations.

Contract law

Companies must equip themselves with the appropriate tools to regulate their legal relations with other economic market operators.

Corporate and Commercial Law

Our dedicated commercial team advises on a range of commercial contracts, projects and outsourcing and helps clients manage commercial relationships across their full range of business activities.

Criminal Law

SQ provides advice and defence activities for both individuals and companies involved in criminal proceedings for many kind of crimes.

Equine Law

Equine law is a unique legal practice area that involves any type of horse-related activities, horse businesses, organizations or facilities. For those seeking high-calibre legal counsel for equine-related legal matters, retaining a lawyer with the relevant experience is essential.

Family Law

Family law is an evolving discipline characterized by continual reforms and numerous jurisprudential interventions that have enlarged the traditional notion of family.

Human Rights

SQ is committed to human rights law and is perhaps the only large commercial law group with a dedicated human rights group.

Insurance and Reinsurance

SQ is a leading provider of commercial solutions and legal advice to the insurance and reinsurance industries and their customers.

International Commercial Litigation

The legal framework of cross-border commercial disputes is both important and complex, as it governs all international sale transactions. In an increasingly globalized world, the establishment of specialists in this area is vital to the health and vitality of today’s businesses.

Mediation and Arbitration

Arbitration and mediation are an alternative to litigation in the courts and are commonly used to resolve complex commercial disputes. Here, one or more independent third parties are appointed as arbitrators to resolve a dispute in place of a court of law.

Real Estate, Project Development and Construction Law

SQ has developed considerable experience in the area of real estate transactions and construction law.


Isabelle Slaets, Niels Van Campenhout, Nathalie Buisseret, Geert G.R. Lenssens

Geert G.R. Lenssens

Geert G.R. Lenssens is leading partner in the Brussels based law firm SQ .He is co founder – former director and active member of the network LNA (London) and member of the commission litigation of the UIA (Paris) .As an experienced lawyer he has a + 30 year expertise in national and international litigation and he also has a long expertise as a Deputy Judge (Commercial Court ) and as a business mediator. This experience results in an exceptional expertise creating a three – dimensional view on legal issues. His law practice areas include all types of banking, insurance, corporate and commercial claims, as well as mass actions and class actions in which he successfully recovered considerable compensations for his clients (companies or consumers) or protected companies from liability issues. He is widely considered as an expert on fraud, assisting his clients discretely to prevent fraud, to discover fraud, or to recover after fraud. Geert G.R. Lenssens is the driven type of lawyer with ADR in mind and considering the strategy and the psychological approach to be as important as the legal approach in order to create the best solutions and results for his clients. Geert has been involved in some of the largest mass claims against big companies such as the Dieselgate case, the LHSP case, the Citibank case, the Delta Lloyd case, the Fortis case, the ARCO case and the Dexia case, representing thousands of claimants. He deals with all aspects of contentious and non-contentious work and advises companies and their boards often on a permanent but discrete basis. Geert is a member of the Brussels Bar, member of the B – Mediation Institute in Brussels specialized in international arbitration and mediation and member of GJN. Geert is also member of the Cercle Lorraine Business Club in Brussels and various other national and international institutions and organisations. He is also author of a non fiction book on international fraud, a publicist in newspapers and magazines and as such an opinion maker. 

Nathalie Buisseret

Nathalie Buisseret was admitted to the Brussels bar in 1993. She has a profound specialization in criminal law in the broad sense. She assists victims as well as suspects in all stages of the criminal procedure from the investigation-phase to the defence before the criminal courts until the Cour de Cassation and this both in French and Dutch language.

She is known for her hands on, no non-sense and smart approach and for highlighting the humane aspects in every case. She has pleaded is some of the most important and notoriuous criminal cases in Belgium, including almost 50 cases before the Court of Assizes in Belgium and has pleaded before the European Court of Justice.

Nathalie Buisseret has the reputation to be one of the top (female) criminal lawyers in Belgium. Nathalie Buisseret focusses on results and has considrable track record of acquittals. She pleads as well in French as in Dutch.  Before joining SQ, she was the partner of the famous criminal lawyer Sven Mary. Recently she was interviewed in the documentary series on the Belgian television, with other top criminal lawyers in Belgium. 

Niels Van Campenhout

Niels Van Campenhout is leading partner and co-founder of the Brussels law firm SQ. He has 25 years’ experience as a lawyer at the Brussels Bar.

Niels is a daily practitioner of commercial and corporate law, and assists mid-sized businesses and professionals in managing their legal issues. Niels will help the entrepreneur in a variety of legal issues with which the entrepreneur is confronted in his or her professional and personal life: drawing up, editing and reviewing commercial contracts and management contracts, mergers and acquisitions, individual labour law issues (employment contracts and dismissals), disputes between shareholders, support in insolvency cases and forming companies. Niels has further training in insolvency law.

In short, Niels Van Campenhout is your legal counsel with an overall experience in business law, and also with 25 years of experience in complex litigation matters before the Belgian courts.

He has extensive experience in international legal matters and can quickly call upon lawyers in other European countries, the USA, Brazil or Japan. These connections are just a phone call away for Niels. He is a board member of Legal Netlink Alliance, a global alliance of carefully selected, midsized, general practice, independent law firms. He speaks fluent English, French and Dutch.

Niels is also very active in the niche legal field of equine law, advising horse owners and riders on sale contracts, corporate structures and litigation.

He is a member of the Warande, a Brussels based service club and is a board member in a range of cultural non-profit organisations.

He acts as an advisor for boards of both national and international companies.

A client’s testimony: “That your lawyer is an experienced legal professional speaks for itself. But you need more; you need your lawyer to be the guy you can trust in difficult times; he has to be closely at your side and guide you through legal issues, assisting you in taking wise decisions for your business. Niels Van Campenhout is such a guy; you can trust him, and he will make sure he knows your business as well as you know it yourself. Niels and his team are easily accessible and available to look for solutions for legal questions. Niels will also assist you in your strategic decision-making; is truly your legal business partner”

Isabelle Slaets

Isabelle Slaets is one of the most promising young criminal lawyers in Belgium. Her passion is undoubtetly criminal law, and she assists victims as well as suspects and guides them in the complex world of the Belgian criminal law system. Her continuous effort to convince judges and public prosecutors results in a high degree of satisfaction for her clients.  focusses on criminal law in the broad sense. She has experience in all kind of criminal cases on the side of the defendant and also for the victims.
Since 2017 she is certified to litigate before the Court of Cassation.
She became a partner of SQ-LAW in 2019 and is the right hand of Nathalie BUISSERET.

Contact Us

+32 (2) 4118008

Keizer Karellaan 584/9, 1082 Brussels