Atty. Justus Jansen

Atty. Justus Jansen

Dr Justus Jansen (Lawyer of the Year Litigation, Hamburg, 2020, Lawyer of the Year Trade Law, Hamburg, 2022) is heading the Dispute Resolution practice group at GSK Stockmann since 2014. The team has 23 members and is thus considered one of the largest dispute resolution teams in Germany with widely recognised expertise and track record in commercial, banking & finance, energy, international plant engineering and corporate disputes as well as in post-M&A disputes.

Hamburg Hamburg 22 yrs experience 22 year
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Arbitration And Mediation & More Attorney · 22+ Years Experience

Profile Summary

About Justus Jansen at a Glance

Justus Jansen is a business, litigation, adr, and international attorney, practicing at GSK Stockmann. They have 22+ years of legal experience, licensed to practice since 2004. Admitted to practice in Germany (2004). Recognitions include Best Lawyers in America — Arbitration and Mediation (2026), Best Lawyers in America — Corporate Law (2026), and Best Lawyers in America — International Arbitration (2026). Serves clients in Hamburg and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Justus Jansen

Dr Justus Jansen (Lawyer of the Year Litigation, Hamburg, 2020, Lawyer of the Year Trade Law, Hamburg, 2022) is heading the Dispute Resolution practice group at GSK Stockmann since 2014.

The team has 23 members and is thus considered one of the largest dispute resolution teams in Germany with widely recognised expertise and track record in commercial, banking & finance, energy, international plant engineering and corporate disputes as well as in post-M&A disputes. In addition, investment protection proceedings have become an elementary part of the Dispute team’s ongoing advisory practice. Currently, the firm is involved in a large number of arbitration proceedings under various arbitration rules, in particular the rules of the German Arbitration Institute (DIS) as well as ad hoc arbitration proceedings. Justus Jansen is himself is regularly active as arbitrator as well as in arbitrator’s expert proceedings.

  • Specialisation: international arbitration and complex court proceedings

Short Biography:

  • Lawyer at GSK Stockmann since 2014
  • Member of the Arbitration Commission of the International Chamber of Commerce (ICC)
  • Member of the Task Force of the International Chamber of Commerce (ICC) on Climate Change related Disputes
  • Lecturer for Litigation and Arbitration Law and Corporate Law at the Hamburg School of Business Administration (HSBA) in the MA and MBA Programme since 2011
  • Lecturer for Dispute Resolution and Private International Law at the International School of Management (ISM) in Hamburg from 2014 to 2015
  • Studies at the Universities of Hamburg, Constance, Bordeaux (Université Michel de Montaigne, France), Cambridge (Sidney Sussex College, Great Britain) and Perugia (Italy)

Recent Publications:

Practice Areas Explained

Justus Jansen's Areas of Legal Practice

Each practice area below reflects the types of cases Justus Jansen handles, with a practical overview of what that area of law involves and how it may apply to your situation in Hamburg.

Business & Corporate Law in Hamburg

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Justus Jansen is one of 497,491 business attorneys indexed nationally. Browse business attorneys →

Civil Litigation in Hamburg

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Justus Jansen is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys →

Mediation & Arbitration in Hamburg

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Justus Jansen is one of 73,315 adr attorneys indexed nationally. Browse adr attorneys →

International Law in Hamburg

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

Justus Jansen is one of 39,787 international attorneys indexed nationally. Browse international attorneys →

Frequently Asked

Common Questions About Justus Jansen

Where is Justus Jansen's law office located?
Justus Jansen's law practice is located in Hamburg. The firm is GSK Stockmann. You can contact the office directly through this profile page.
What practice areas does Justus Jansen handle?
Justus Jansen focuses on business, litigation, adr, international. Each practice area listed reflects experience handling cases of that type in their licensed jurisdictions.
How long has Justus Jansen practiced law?
Justus Jansen has 22+ years of legal experience and has been licensed since 2004.
How can I contact Justus Jansen for a consultation?
You can contact Justus Jansen directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has Justus Jansen received?
Justus Jansen's notable recognition includes: Best Lawyers in America — Arbitration and Mediation; Best Lawyers in America — Corporate Law; Best Lawyers in America — International Arbitration; Best Lawyers in America — Litigation; Best Lawyers in America — Trade Law.

Professional Profile

Why Clients in Hamburg Choose Justus Jansen

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Justus Jansen's practice in the field of business, litigation, adr, and international.

Decade-Tested Legal Experience

Justus Jansen brings 22+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering business, litigation, and adr, Justus Jansen can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Hamburg

A Hamburg-based practice means Justus Jansen attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Justus Jansen Handles in Hamburg

Below is a representative sample of the types of matters Justus Jansen has experience with. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Justus Jansen directly to discuss the specifics of your situation.

Search Reference

How People Find Justus Jansen Online

Prospective clients searching for legal help in Hamburg commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Justus Jansen.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Justus Jansen directly.

Justus Jansen's Practice Areas & Specializations

Awards & Professional Honors

Best Lawyers in America — Arbitration and Mediation
- 2026
Best Lawyers in America — Corporate Law
- 2026
Best Lawyers in America — International Arbitration
- 2026
Best Lawyers in America — Litigation
- 2026
Best Lawyers in America — Trade Law
- 2026
Lawyer of the Year — Trade Law, Hamburg (Germany)
- 2022
Lawyer of the Year — Litigation, Hamburg (Germany)
- 2020

Bar Admissions & Licensed Jurisdictions

Germany
Admitted: 2004

Client Reviews & Ratings — Justus Jansen

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