
De Brauw Blackstone Westbroek acts for multinational corporations across a wide array of sectors, demonstrating a wealth of experience handling cross-border mass claims and class action proceedings. Machteld de Monchy leads the practice and is an authority on class actions and mass claims, being well-versed in handling multi-jurisdictional follow-on cases as well as complex class actions that fall under the WAMCA regime. Marieke Bredenoord-Spoek specialises in class actions and competition follow-on damage cases, handling matters involving product liability and consumer law, securities litigation and competition issues. Johan Valk is another key team member who handles mass claims before the Dutch courts.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- Jolling de Pree has a brilliant mind and sees things others don't. Machteld de Monchy is tremendous: intellectually first class, pragmatic and commercial, and great fun to work with.
- They build teams that combine rich skill sets and lawyers from across Europe to deliver a sophisticated and tailored product.
- ‘Great team to work with. Highly knowledgeable, high pace with good intense discussions that make great solutions under significant pressure. ’
- ‘Machteld de Monchy stands out. Excellent strategist, creative solutions and always ready to challenge the status quo.’
- ‘De Brauw Blackstone Westbroek are outstanding in taking care of their clients, while providing top quality and honest advice.’
- ‘They want solid foundations for the defence and advice they provide to the clients that is well rooted in legal arguments but also in economic arguments, so they make sure that the economic advice is strong and interacts perfectly with the legal arguments.’
- ‘De Brauw Blackstone Westbroek builds teams that fit the needs of the matter. Its unique approach to team building makes a difference, and its partners know how to develop and lead these teams for maximum performance.’
- ‘Machteld de Monchy is extremely bright, fast and clear spoken. A pleasure to work with. Marieke Bredenoord-Spoek is notable and has become an important voice in the international discussion.’
- ‘Jolling de Pree is one of the best lawyers I have had the pleasure to work with. Machteld de Monchy is also brilliant.’
- ‘Machteld de Monchy is super smart, incredibly strategic and totally focused on finding solutions for her clients. She is a pleasure to work with. Jolling de Pree brings huge experience and creativity to some of the most complex cases in the market.’
Key clients
- Airbnb
- Amazon
- Avast
- Booking.com
- British Airways
- Bureau Clara Wichmann
- Celanese
- DS Smith
- ING
- J.P. Morgan
- Meta
- Otis
- Paccar and DAF Group
- Philips
- Rabobank
- Salesforce
- Schiphol Group
- Shell and NAM
- SRLEV
- TikTok
Work highlights
Represented Paccar and DAF Group in around twenty jurisdictions in a mass claim, including proceedings before the Supreme Court of the United Kingdom amongst others.
Represented Airbnb in several mass claims, including Supreme Court proceedings and a class action.
Represented Amazon, Avast, Meta, Salesforce and TikTok in GDPR class actions, including claims in excess of €10bn and Supreme Court litigation.
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.

Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Johan Valk
Practice head
Machteld de Monchy
Other key lawyers
Marieke Bredenoord-Spoek; Jolling de Pree; Johan Valk

