Boutique law firm at the intersection of data, technology and AI

Turning legal friction into forward motion

I’m Frederick Leentfaar, founder of Feyr Law

With over 16 years of experience as a privacy and technology lawyer, including in-house for Big Tech, I’ve seen firsthand how legal frameworks only add value when they align with the realities of decision-making, product development and risk management within organizations. That insight is the foundation of Feyr Law: combining legal expertise with strategic clarity and practical relevance.

My approach is pragmatic and solution-driven. No abstract advice, but legal strategies that work in practice. I see the law as a tool for enabling progress—not blocking it. At Feyr Law, you won’t get generic answers, but legal guidance tailored to the complexity and ambitions of your business.

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Frederick Leentfaar

What is Feyr Law good at?

Deep expertise, sharp focus. Feyr Law thrives where data, tech and AI meet the law.

Data

Privacy law is at the core of Feyr Law. I help you navigate complex data laws without losing sight of your product goals. I don’t just flag risks—I help you weigh them, shape them, and move forward with confidence.

Tech

Whether you’re building platforms, scaling infrastructure or launching new features, Feyr Law offers legal guidance that fits how tech teams actually work. I speak product, not just law—and I help you ship without getting stuck.

AI

AI raises complex questions. Feyr Law helps you answer them—strategically, clearly, and without panic. From model governance to data sourcing and compliance, I help you find the legal path that matches your ambition.

How can Feyr Law support your business?

Support that fits your structure. Legal, interim or collaborative—Feyr Law plugs in where you need it.

Legal support

Need a lawyer? You’ll get one. Feyr Law offers classic legal services—contract drafting, litigation, risk analysis, regulatory advice—with a pragmatic twist. No fluff, no overlawyering. Just clear, strategic support that helps you move.

Interim support

Running an in-house legal team and need extra capacity? I step in quickly, work independently, and speak your language. I’ve been in-house myself, so I know how to plug in without slowing things down.

Events and training

Need a speaker or trainer on data, tech or AI? I’ve got you covered. Feyr Law brings legal clarity to complex topics—on stage, in workshops or team sessions. Sharp, practical and tailored to your audience.

Flexible pool

Law firm, tight deadline, complex matter? I support legal teams that need an extra pair of hands—confidentially, competently and with zero friction. I plug in quickly, deliver reliably, and help your team stay sharp under pressure.

Let’s talk

Want to chat about your product, your north star, or how Feyr Law can help you move faster? Whether you’re iterating, scaling, or navigating complexity – Feyr Law plugs in where you need it.

Let’s grab a coffee – virtual or real – and talk.
No pitch. No friction. Just clarity, speed, and sharp legal thinking.

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The big print

Frederick Leentfaar is an attorney at law, admitted to the Netherlands Bar since 2008. He has registered the following principal legal practice area in the Netherlands Bar’s register of legal practice areas (rechtsgebiedenregister): privacy law.

Based on this registration, he is required to obtain ten training credits per calendar year in each registered principal legal practice area in accordance with the standards set by the Netherlands Bar.

Frederick is a member of Vereniging Privacyrecht Advocaten (VPR-A), Vereniging Privacy Recht (VPR), Vereniging AI Advocaten (VAIA) and Nederlandse Vereniging voor Informatietechnologie en Recht (NVvIR).

Feyr Law B.V. is a limited liability company under the laws of the Netherlands, registered with the Netherlands chamber of commerce under number 97705845. The VAT number for Feyr Law B.V. is NL868193458B01.

Feyr Law B.V. does not hold an escrow account and therefore does not accept third party funds.

Feyr Law B.V. is insured for business and professional liability with Aon Nederland C.V. Information about the insurance coverage will be provided upon request. The Feyr Law B.V. complaints procedure can be viewed here.