Otto Von Gruben

Lawyer Partner

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

John Büttner advises on all aspects of national and international business tax law, including areas where it intersects with corporate and inheritance law. He has many years of experience in international tax law, criminal tax law, tax litigation, the taxation of restructurings, real estate taxation, and the taxation of capital investments. In addition, Mr Büttner advises private clients, families, and family businesses on ongoing tax matters, including asset structuring, (corporate...

Julia Grothaus is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Julia, who practices law in Frankfurt/Main, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Julia is held by other top lawyers in the same geographic and legal practice area.

Dr Oliver Wolff-Rojczyk has extensive expertise in IT law, copyright, software and licensing law, competition law, trademark law, and commercial IP law. He primarily advises and represents rights holders in exploiting and enforcing their IP rights in civil and criminal proceedings, particularly regarding product piracy and IT compliance. He also supports IT companies in complex projects and represents clients in related litigation. Additionally, he advises on cybercrime matters, including man...

Peter Gumnior is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits Law and Labor and Employment Law. Peter, who practices law in Frankfurt/Main, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter is held by other top lawyers in the same geographic and legal practice area.

Since 2006, Dr. Michael Kühn has been advising and assisting family-owned companies and affluent individuals in all aspects of succession and asset protection. He specialises in accessions, inheritance and inheritance tax law as well as in the associated areas of foundation, corporate and family law. His work also involves developing tax efficient wills and transfer contracts as well as providing legal guidance in the execution of marriage contracts. In the context of preparing larger an...

Jörg Lamers has been a lawyer since 1989 and a notary since 2008. He has extensive experience advising national and international clients on real estate law and asset management, including the acquisition, sale, and structuring of real estate and portfolios. He provides ongoing legal support to optimise all aspects of existing portfolios. As a notary, Lamers oversees real estate transactions from project preparation to completion and guides property development projects from land acquisi...

Rechtsanwalt (Attorney at Law), Defense Lawyer and Founder of Rübenstahl Rechtsanwälte in Frankfurt, Germany. Studied Law in Mainz and Rome (Italy), doctorate from the University in Freiburg i.Br. He advises and represents companies and individuals in the areas of white collar crimes, criminal law, criminal tax law and tax compliance for over fifteen years. He is also a lecturer at the Albert-Ludwigs-University Freiburg i.Br., Co-Editor of the journal „wistra“, advisor o...

Dr Markus Dinnes specialises in the judicial and extrajudicial enforcement of his clients’ interests in complex commercial law disputes before both state courts and courts of arbitration. He has extensive and long-standing experience in litigation and consulting, including in summary proceedings and proceedings before the German Federal Court of Justice and the European Court of Justice. The subject of his proceedings is often post-M&A disputes, corporate disputes, distribution agre...