Lucas de Vet is an associate at Brandeis. He specialises in administrative law enforcement and complex regulatory issues within regulated markets. His practice covers, amongst other things, energy, telecommunications, media, gambling, platform regulation, cybersecurity and the enforcement procedures associated with these areas.

Lucas enjoys working in markets that are strictly regulated by the government. One of the sectors in which he has been particularly active in recent years is the electricity market. In this sector, he has advised numerous companies dealing with the consequences of grid congestion, including capacity constraints and connection issues. On behalf of various companies, he has submitted requests for dispute resolution to the regulator ACM in conflicts with system operators. In addition, Lucas has submitted several written submissions in response to regulatory changes to the electricity market proposed by the ACM. For example, he drafted a written submission on behalf of the national blood supply organisation, which resulted in system operators being obliged to give it priority in the allocation of (scarce) transmission capacity.

Lucas obtained a Master’s degree in Constitutional and Administrative Law from Utrecht University and subsequently completed a Master’s degree in European Law at Leiden University, graduating cum laude. During his studies, he spent a semester at LUISS Guido Carli University in Rome, where he further specialised in European and international law. He also took part in various moot court competitions. Before joining Brandeis, Lucas worked at AKD in Amsterdam and, for a period, in Brussels, where he specialised in European law.

Tessel Bossen is an associate at bureau Brandeis. She works in the firm’s criminal law practice, representing both victims and suspects, as well as various other parties in civil and criminal proceedings.

Tessel has extensive litigation experience. Prior to joining the criminal law team at bureau Brandeis, she worked in several litigation practices within the firm and at the Dutch office of an international boutique law firm. Her work included handling damages claims, where she consistently represented claimants and injured parties – reflecting her longstanding commitment to advocating for the challenger. She now applies this experience for example to support victims of criminal offenses.

Tessel studied in Amsterdam (Institute for Information Law, University of Amsterdam), Copenhagen, and New York. She participated in several moot court competitions, including the prestigious Monroe E. Price Media Law Moot Court at Oxford University. During her studies, she volunteered at the Bijlmermeer Legal Aid Foundation (Stichting Rechtswinkel Bijlmermeer) and worked as a court clerk at the Amsterdam District Court.

Tessel has been admitted to the bar since August 2019.

Lisa Oostinga is an attorney at bureau Brandeis and a member of the Information Law team. She specializes in matters concerning press freedom and reputation management, intellectual property (including copyright, trademark and design law, and trade name law), corporate law, and attachment proceedings. She represents clients in complex and often urgent disputes, many of which have an international dimension.

Lisa is known for her personal and approachable style. She combines clarity with insight, allowing her to quickly grasp the essence of complex issues and work effectively towards solutions.

With over 20 years of experience in civil litigation, Lisa brings extensive expertise to her practice. Before entering the legal profession, she worked for many years at the Amsterdam District Court as a senior legal counsel in the preliminary relief proceedings division, where she dealt with a wide range of civil law matters, including media law, intellectual property, corporate law, public procurement law, and attachment proceedings. She also served as deputy legal counsel at the Regional Disciplinary Tribunal for Healthcare in Amsterdam.

Lisa obtained her law degree from Vrije Universiteit Amsterdam and subsequently completed various postgraduate courses in corporate, media, and intellectual property law.

Since 2025, she has been practicing as an attorney at bureau Brandeis.

Esmee (P.F.M.) Elsenburg is an attorney at bureau Brandeis. She works within the Corporate and Commercial litigation section.

In 2023, Esmee graduated cum laude from the University of Amsterdam with a master’s degree in Private Law Practice. During her studies, Esmee developed a particular interest in civil law, with a specific interest in contractual disputes and finance and security law issues. During her studies, Esmee also gained experience as a legal assistant at Flinck Advocaten and was a board member of Stichting Ad Forum.

Within the Corporate and Commercial litigation section, Esmee deals with corporate and commercial disputes. In addition to her work at bureau Brandeis, Esmee is part of the board of Stichting Justitia as secretary for the year 2024/2025.

Joost van Belois is an attorney at bureau Brandeis. He specialises in European and competition law.

Joost obtained the master’s degree in European Law at Leiden University, where he also followed the Honours College Law programme. He wrote his thesis on the principle of effective judicial protection and individual access to the European Courts.

In 2023, he participated in the prestigious European Law Moot Court Competition, in which he and his team reached the (regional) finals.

Joost has also gained experience in competition law during two internships in the legal profession.

Bram van Eijk is a lawyer at Brandeis firm specializing in information law and fundamental rights.

Bram obtained his master’s degree in constitutional and administrative law from Leiden University in 2022 cum laude. During this master he focused particularly on the interfaces between digitization, data and government. From this interest, he continued his legal career with a master’s degree in information law at the Institute for Information Law (IViR), which he completed in 2023. He wrote his master’s thesis on transparency in the use of personal data in government decisions.

During his studies, Bram completed several internships at the district court and at law firms. He also worked as a court lawyer at the Amsterdam District Court, where he assisted in preparing hearings and writing judgments.

Demi van den Berg is an attorney in the field of (European) competition law and sector-specific regulation. In her daily practice, she particularly focuses on cartels, vertical (distribution) agreements, abuse of dominance, merger control and foreign direct investments. Demi also regularly advises on consumer protection law and other European law topics, such as the fundamental freedoms and the Services Directive.

Demi has a particular affinity with digital markets and the media, telecoms, travel and sports sector. She represents companies in both civil (interim relief) proceedings and administrative proceedings at national and European level. This has given her in-depth expertise in Dutch administrative (procedural) law and experience with various regulatory authorities, including the Dutch Authority for Consumers and Markets (ACM), the European Commission, the Human Environment and Transport Inspectorate (ILT), as well as the Dutch investment screening authority (BTI).

Prior to joining bureau Brandeis, Demi followed the master’s specialisation European Business Law at the Radboud University Nijmegen. With her thesis on the Digital Markets Act, Demi obtained her master’s degree summa cum laude in 2021. During her studies, Demi worked as a clerk at the District Court of Gelderland and worked as a teacher in the Jurisprudence Department of the Faculty of Law in Nijmegen.

In 2019, Demi won the European Law Moot Court Competition. In this prestigious competition for European Law, she successfully pleaded before the judges of the European Court of Justice in Luxembourg and consequently undertook an internship in the chambers of Advocate-General Bobek.

Demi is a member of the Dutch Competition Law Association (Vereniging voor Mededingingsrecht) and the Association for Investment Screening (Vereniging voor Investeringstoetsing).

Relevant experience

• Assisting target companies Vierhouten/DWP in the ACM’s second-phase merger investigation, leading to unconditional clearance for their acquisition by Foresco, in which the ACM first applied the new ‘stringing beads’ theory of harm;
• Advising and assisting various high tech companies in preparing and submitting notifications under the Dutch Foreign Direct Investment Screening Act (Wet Vifo) to the BTI;
• Obtaining second phase unconditional merger control clearance of the ACM for mobile virtual network operator Youfone in relation to its acquisition by incumbent operator Royal KPN;
• Winning on behalf of ice-skaters Mark Tuitert and Niels Kerstholt and sports trade union EU Athletes a landmark case before the Grand Chamber of the Court of Justice in Luxembourg in relation to a decision of the European Commission on the admission rules of the International Skating Union (ISU) and the role of the Court of Arbitration for Sport (CAS);
• Assisting a third party in the Booking/eTraveli merger before the European Commission, ultimately resulting in EU veto;
• Successfully representing various travel companies in consumer protection enforcement proceedings by the ACM, amongst others leading to suspensions and the first time the ACM ever handed out a symbolic fine of € 1.000,-;
• Representing a travel company in objection and appeal proceedings before the Human Environment and Transport Inspectorate (ILT), resulting in a reduction of fines by more than 90%;
• Succesfully objecting the decision of the Minister of Infrastructure and Water Management to deny a party active in the sale of drones access to the market.

Bente van Kan is a junior associate at bureau Brandeis. She focuses on the regulation of digital services, including services in the fields of telecommunications, media, gambling, platform regulation and cybersecurity. Bente represents companies in various administrative law proceedings, including enforcement proceedings before supervisory authorities (such as the Netherlands Authority for Consumers and Markets and the Netherlands Gambling Authority), and advises and litigates on matters such as scarce licences, the Open Government Act (Wet open overheid) and the rules for advertising and marketing.

Bente completed the Master’s degree in Information Law at the University of Amsterdam in 2023. During her studies, she focused in particular on intellectual property law and the liability of online intermediaries. She wrote her master’s thesis on sustainability in trademark law from the perspective of ‘Upcycling’.

During her studies, Bente also gained work experience at various legal firms, both within the legal profession and the notarial practice.

Bente is a member of the Advertising Law Association.

Joris Viellevoije is an associate at bureau Brandeis within the Financial Litigation team. He is a litigator and specialises in dispute resolution in the field of financial supervision law.

He is a passionate attorney and amongst other things has affinity with:

• FinTechs and new financial market entrants
• Investment and asset management
• Regulation of (complex) financial products and instruments

The Legal500 rankings recognise Joris as a key lawyer and recommend him for matters relating to crypto assets.

In addition to his work at bureau Brandeis, Joris was a board member of the foundation Stichting Justitia in 2023/2024.

Joris completed the Master’s specialisation in Financial Law at Radboud University with a focus on financial market regulation. In addition to his studies, he completed internships at a large law firm and at De Nederlandsche Bank.

Joris also completed Radboud University’s interdisciplinary Honours programme, was president of the study association of the Radboud Honours Academy and studied at Peking University in China, Gujarat National Law University in India and at SBCC in Santa Barbara.

Timo Hieselaar is working as a lawyer specialising in European competition law and regulated markets.

In addition to his work in the context of cartels, abuse of power, distribution agreements and (second phase) merger notifications, Timo particularly focuses on complex issues surrounding competition litigation, including class actions and follow-on cartel damages proceedings, as well as private international law matters. In addition, Timo has affinity with digital (platform) markets, the sports sector and the Dutch Security Screening Act (‘Wet Vifo’). He assists companies in both European and national administrative law proceedings, as well as in competition litigation.

After obtaining his bachelor’s degrees from both Radboud University and Nottingham Trent University (cum laude), Timo obtained a master’s degree in European Business Law (Radboud University) in 2020, with a focus on (European) competition law (cum laude). During his studies, Timo interned at various international law firms and supported district courts in handling class action cases.

Relevant experience:

• Representing skaters and the European Athletes Association as complainants and occasionally appellants in the (higher) appeal proceedings at the General Court and Court of Justice against the Commission decision International Skating Union.
• Acting for victims in follow-on damage cases, including against banks (Forex cartel) and tech companies (Google Shopping).
• Advising various high tech companies on the Dutch Security Screening Act (‘Wet Vifo’).
• Assisting targets in second phase investigations by the ACM, in which the new theory of damage of ‘stringing beads’ was applied for the first time.
• Assisting travel agents in (civil) disputes with tour operators.
• Local counsel for competition law firms outside the Netherlands in various cartel cases at the ACM.
• Assisting Bastion Hotels in several appeal proceedings at the General Court regarding the Dutch State aid scheme regarding fixed costs compensation (‘Tegemoetkoming Vaste Lasten’).

Minke Gommer is a junior associate at bureau Brandeis. She specializes in information law and fundamental rights.

Minke obtained her master’s degree in Information Law and Public International Law at the University of Amsterdam. In addition, she earned a bachelor’s degree in Psychology and participated in an extracurricular honours program at the University of Groningen.

After her studies, Minke worked for the Dutch government for a number of years, including the Ministry of Justice and Security and the Ministry of Foreign Affairs. She also worked as a lecturer in fundamental rights at the University of Amsterdam.

Minke has been working at bureau Brandeis since September 2019.