Tammo Vitens

Dr. Markus Bauer advises both German and international clients in connection with national and cross-border corporate acquisitions, the formation and administration of joint ventures, private equity transactions and the structuring and restructuring of corporations and corporate groups. A further focus of his work is on advising management boards, managing directors and supervisory boards of predominantly medium-sized companies on their respective duties and the development of compliance prog...

Dirk Freihube is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Dirk, who practices law in Frankfurt/Main, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dirk is held by other top lawyers in the same geographic and legal practice area.

Arnold Asmussen started his training in the field of intellectual property in 1996, and he joined VOSSIUS & PARTNER in 1997. He was admitted to practice as a European Patent Attorney in 2003. Arnold Asmussen became a German Patent Attorney (Patentanwalt) and a European Trademark & Design Attorney in 2005. He has been a partner in the firm since 2007. Arnold Asmussen has extensive knowledge in the field of medical engineering, especially in the field of cardiovascular medicine, neuromo...

Matthias is a Counsel in Dentons’ Dusseldorf office and a member of the Litigation and Dispute Resolution practice group. He is specialised in international commercial arbitration and has extensive experience in construction engineering and post-M&A disputes. Another key focus of his work is global commercial disputes, including the representation of clients in mass-litigations. He also advises on project development, including the drafting, negotiation and enforcement of commercial...

Dr. Claudia Pleßke advises national and international companies on corporate and transactional law. In this connection, she advises companies mainly from the automotive, aerospace, pharmaceutical and food industries, on national and cross-border M&A transactions and in recent years increasingly on Chinese outbound transactions. Another focal point of her work is advice on formulating contracts for companies in all fields of commercial law. Claudia Pleßke is in charge of the Ch...

Claudia Maaßen LL.M. is a lawyer and partner at Friedrich Graf von Westphalen & Partner. She has been working in the litigation and arbitration practice group of Friedrich Graf von Westphalen’s Cologne office since 2016. Claudia Maaßen is a specialist in dispute resolution with a focus on manager liability and D&O and product liability. Her clients include insurance companies, managers and private companies. Claudia Maaßen speaks German, French and English.

Born in 1960 Apprenticeship as banker 1981 Legal studies at the University of Münster First Exam ("1. Staatsexamen") in 1986 Postgraduate studies at the University of Pennsylvania, Philadelphia, USA, 1986 - 1987 Master of Laws (LL.M.) 1987 Doctor of Laws (Dr. jur.) 1989 Second (Bar) Exam ("2. Staatsexamen") in 1990 Bar admission in Germany in 1990, with the firm since then Admission to the New York bar in 1991 Certified Specialized Attorney in International Business Law since 2014 Member...

Heiko Heppner is co-head of the German Dispute Resolution practice group and professor of law concentrating on international arbitration and litigation with a focus on Germany and common law jurisdictions. Heiko has particular experience with defending clients against mass and class securities litigation and special expertise in Banking and Capital Markets litigation, including the liability of credit rating agencies and for the mis-selling of derivatives. Moreover, Heiko represents clients b...

Dr. Wallinger is involved in high profile patent litigation since 1983, including hundreds of patent infringement, patent nullity and patent opposition cases, as well as IP arbitration. A considerable number of these cases were finally decided by the German Federal Supreme Court and are still regarded as landmark decisions. These decisions include, inter alia: “Diving Computer” on the patentability of software programs, “Radio Controlled Clock I, II” on international j...

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