On ne naît pas
tous avec des défenses
On ne naît pas
Trust. Competence.
Strategy. A Global Outlook.
These aren’t just words on a page. They’re the principles we’ve practiced – and proven – for decades. Ten years ago, fifteen years ago, thirty-five years ago.
And they still guide how we work today.
For over 35 years,
Lex Thielen & Partners
has been a steady legal partner to businesses, families and professionals in Luxembourg and beyond. Our clients come to us in moments of change, growth, or uncertainty – and stay with us because we offer more than legal answers. What we bring is grounded in trust, competence and strategy – and delivered with the same care whether the matter is local or cross-border.
Trusted Relationships
That Last
Some of our clients have been with us since our earliest days. Others return years later to tell us how a legal solution we helped shape continues to guide them. That kind of trust doesn’t come from transactions. It comes from showing up, staying consistent, and doing the right thing, even when it’s not the easy thing.
… We have worked with Lex and his team for more than 25 years, and there is a reason we have never looked elsewhere. From real estate to commercial and labour law, he has always been more than just a lawyer. He has been a trusted advisor.
Depth of Knowledge,
Applied with Judgment
We’ve handled thousands of matters across civil, corporate, labour and real estate law – and that experience shapes how we work today. We take pride in solving complex legal problems in a way that feels structured, calm, and purposeful.
… They genuinely care about finding the right solution. Thanks to them, we’ve reached successful settlements in cases we once thought were nearly impossible. We highly recommend Lex Thielen & Partners. Their work is outstanding.
Strategy That Puts
Your Interests First
We believe legal advice should go beyond what’s technically correct and help you understand what’s actually worth doing.
Sometimes that means taking decisive legal action. Sometimes it means stepping back. And often, it means helping clients see the landscape more clearly, so they can choose wisely, not react quickly.
… From the start, they brought clarity, confidence, and a clear sense of legal strategy. They not only won two court cases but also supported me through general meetings and key strategic decisions.
Luxembourg Roots,
International Reach
As part of the Alliott Global Alliance, we work closely with trusted law, accounting and advisory firms in 101 countries. This gives our clients access to seamless support – whether they’re entering the Luxembourg market, expanding abroad, or enforcing a foreign judgment or arbitral award.
… Lex Thielen & Partners is a law firm with a pragmatic mindset, legal expertise across multiple fields, and strong capabilities in international matters. They have advised us on contracts and handled legal procedures in Luxembourg and abroad.
What We Bring
Clients trust us because we’ve built long-term solutions and long-term relationships.
Clients come to us not just for legal answers, but for the clarity that comes with lived experience.
Through our alliance, you get global reach with local trust – already in place.
With more than 25,000 courtroom hours behind us, we know when to litigate – and when not to.
Behind The Work
What we do is serious. The way we do it is human.
Contact Us
Whether you are facing a legal challenge, planning your next move, or looking to protect what matters most, we are here to help.
Contact us to explore how we can support your goals with clear, reliable legal guidance.