Peter-Michael Weisse

Dr. Ute Jasper has been a lawyer at Heuking Kühn Lüer Wojtek since 1991 and a Partner since 1994. Dr. Jasper heads the Public Sector Department. With the department, she has designed and implemented numerous projects for the government as well as for large cities, counties and municipalities, such as large procurement procedures and investor competitions, but also strategic partnerships and PPPs in the fields of public transport, culture, sports, water, energy, construction, hospita...

Oliver Lieth is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Real Estate Law. Oliver, who practices law in Düsseldorf, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Oliver is held by other top lawyers in the same geographic and legal practice area.

Sebastian von Lossow LL.M. is a lawyer and partner at Friedrich Graf von Westphalen & Partner. He has been working in the corporate law and M&A practice of Friedrich Graf von Westphalen’s Dusseldorf office since 2025. Sebastian von Lossow is a specialist in M&A, joint ventures and real estate transactions. His clients include entrepreneurs, family offices and mid-size companies (industrials, engineering as well as software-as-a-service) and real estate managers and investors...

Pierre-André Brandt is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Pierre-André, who practices law in Düsseldorf, Germany, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pierre-André is held by other top lawyers in the same geographic and legal practice area.

Oliver Rosenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Oliver, who practices law in Düsseldorf, Germany, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Oliver is held by other top lawyers in the same geographic and legal practice area.

Dr. Christian Sandweg joined the firm of VOSSIUS in 2011 and was admitted to practice as a German Patent Attorney (Patentanwalt) and European Patent Attorney in 2015. His training in IP included stages at the German Patent Office, the Federal German Patent Court and the Lower District Court Mannheim. In 2016, he became a partner in the firm. Dr. Sandweg studied physics at the Technical University of Munich and the University of Kaiserslautern, specializing in solid state physics and in partic...

Claudia Maaßen is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Claudia, who practices law in Cologne, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Claudia is held by other top lawyers in the same geographic and legal practice area.

Katharina Landes is a top attorney recognized by Best Lawyers in the practice area(s) of Data Security and Privacy Law. Katharina, who practices law in Cologne, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katharina is held by other top lawyers in the same geographic and legal practice area.

Lutz Martin Keppeler is a top attorney recognized by Best Lawyers in the practice area(s) of Data Security and Privacy Law and Information Technology Law. Lutz Martin, who practices law in Cologne, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lutz Martin is held by other top lawyers in the same geographic and legal practice area.

Friedrich Kötter-Boisserée Dipl.-Finanzwirt Attorney Certified specialist in tax law Specialists areas : Tax law, transformation-of-companies tax law, transformation-of-companies law, criminal law for tax offenses I have been advising companies/individuals of all legal forms as a lawyer since 1990, specialising in tax law, and since 1997 I have also been licensed as a specialist lawyer for tax law. My former employment with the tax authorities of the state of North Rhine-Westphali...