Patrick Haas

Leading specialist in collective actions and complex strategic corporate disputes.

Contact

+31 6 52 61 56 23
phaas@asteriq.nl

Patrick is one of the leading lawyers in the Netherlands in the field of collective actions and mass claims. He advises interest groups, claim foundations, institutional investors, and litigation funders in complex national and international disputes where substantial financial, societal, and reputational interests converge.

About Patrick

With his combination of deep litigation experience and an MBA background, Patrick approaches disputes from a legal as well as a strategic and commercial perspective. That multidisciplinary approach enables him to effectively structure complex cases, sharply analyze opportunities and risks, and guide clients in making strategic decisions in high-impact proceedings.

Patrick is valued for his sharp analyses, pragmatic approach, and ability to provide direction in large-scale proceedings that often span multiple years and jurisdictions.

Approach

Before founding Asteriq, Patrick led the litigation practice at AKD, which consisted of approximately forty lawyers. In that role, he was responsible for some of the practice’s largest and most high-profile disputes.

Patrick played a key role in several leading collective proceedings, including cases arising from the diesel emissions scandal, privacy proceedings against Big Tech companies such as Amazon and X, and proceedings following the Wirecard scandal. In addition, he possesses extensive experience with cross-border disputes where issues of jurisdiction, applicable law, and the alignment of proceedings across multiple jurisdictions play a central role.

He regularly advises on the development and execution of international litigation strategies, closely aligning legal, commercial, and funding aspects to achieve the most effective result possible for clients.

‘Patrick Haas is a recognised leader in collective redress and class actions, including complex, cross-border matters.’ Chambers Global Guide (2026)
‘Patrick Haas is quick and a smart strategic lawyer. He has a lot of knowledge about the multi-party litigation space in the Netherlands, and knows how to help a client. One of the most experienced lawyers on claimant side.’ The Legal 500 (2026)

Recognitions

● Chambers Global (Band 1, 2022–2026)
● Chambers Europe (2021–2026)
● The Legal 500 – Leading Partner (2025–2026)
● LexisNexis Who is Who – Recommended Lawyer

Qualifications

Patrick studied Dutch Law at Erasmus University Rotterdam and obtained a European Master in Law and Economics (EMLE) from the universities of Stockholm, Lund, and Ghent. In addition, he earned an MBA from the Rotterdam School of Management. Patrick is fluent in Dutch and English.

About us

Asteriq is an independent litigation firm specializing in complex disputes. We act in cases where financial, commercial, or societal interests are significant, and where making the right strategic choices determines the outcome.