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Why You Need a Legal Representative for Clinical Trials in Europe

If your company is based outside the EU or EEA and you´re planning to conduct a clinical trial in Europe, there’s one thing you absolutely need to have in place before you get started: a legal representative.

EU flags in front of large office building

This isn’t just a formality—it’s a regulatory requirement under EU law. And more importantly, it’s key to running a smooth, compliant, and ethically sound study in the European Union.

Let’s break down what this role is, why it matters, and what you need to know.

What Is a Legal Representative?

A legal representative is an individual or organization based in the EU/EEA who acts on behalf of a clinical trial sponsor located outside the region. Their role is mandated by the EU Clinical Trials Regulation (EU CTR 536/2014), which governs how clinical trials are conducted across EU member states.

In short, if you’re a sponsor from outside the EU/EEA, you must have a legal representative established within the EU/EEA in order to gain approval for your trial.

Why Is This Required?

The legal representative ensures that the sponsor stays compliant with European laws and acts as the main point of contact between the sponsor and regulatory authorities. Here’s why that matters:

1. They Provide Legal Accountability

The legal representative is jointly and severally liable with the sponsor for ensuring the trial is conducted according to EU regulations. That means they share legal responsibility for participant safety and compliance. It’s a safeguard for both patients and the regulatory system.

2. They Handle Communications with EU Authorities

From submitting applications via the Clinical Trials Information System (CTIS) to managing safety reports and responding to regulatory queries, the legal representative is your official voice within the EU.

3. They Help Ensure Participant Safety

European regulations put participant rights and safety first. The legal representative plays a key role in making sure all ethical and safety requirements, like informed consent and adverse event reporting—are respected in every participating country.

4. They Navigate Local Requirements

Even though the EU CTR harmonizes clinical trial processes across Europe, each country may still have local expectations or procedures. A legal representative with EU experience can help avoid delays and ensure your trial runs smoothly across borders.

5. They Assist with Liability and Insurance

In the event of a complaint or legal action, the legal representative may serve as the responsible party in the EU. They also ensure proper insurance and indemnification are in place, which is a common prerequisite for regulatory approval.

Who Can Be a Legal Representative?

You have a few options here:

  • An EU-based affiliate or subsidiary of your company
  • A legal services provider with experience in clinical trials
  • An individual consultant

The best choice depends on your internal resources, the complexity of your trial, and how much local support you need.

Final Thoughts

Having a legal representative is more than checking a box—it’s about building trust, ensuring compliance, and protecting participants.

If you’re considering conducting clinical trials in Europe, partnering with the right legal representative is one of the most important steps you can take.

Need help finding or appointing a legal representative in the EU? We can help guide you through the process. Let’s talk.

Heike Schön

This post was written by Heike Schön. Heike is the CEO of Lumis and has worked in management positions in clinical research for more than 20 years. Her experience ranges from conducting national and international Phase I clinical trials all the way to registration and post‑marketing activities. She held positions within contract research organisations (CROs) and in the biotechnology industry.

Heike holds a master’s degree in psychology from Freie Universität Berlin and a master’s degree in business administration from Schiller International University. Since 2002, she has been active in the Association of Clinical Research Professionals (ACRP), where she also served as a member of the Board of Trustees and as its Chair in 2010. Heike is a regular speaker at international conferences and publishes in clinical research and medical device magazines.