Member Profiles

Attorney Phillipp von Raven specializes in the fields of German corporate law and M&A/corporate acquisition as well as international business law and general cross-border commercial law. He has extensive experience in venture capital and private equity transactions as well as international joint ventures and is an expert on franchise agreements. In the field of corporate law, he counsels clients on matters including shareholder disputes, transformations, mergers and other complex restructurings. He advises German medium-sized enterprises and venture capital companies, as well as international corporations. Phillipp von Raven has overseen and provided legal advice on M&A transactions and joint ventures in Germany, France, Scandinavia, Eastern Europe, Russia, the Middle East, South Africa and Japan. Phillipp von Raven has over 21 years of professional experience. Prior to joining WINHELLER, he worked for 14 years at the US law firm Jones Day in the M&A and Corporate Law practice group. Furthermore, he worked at a major German business law firm for two years. He is a renowned lecturer for M&A and corporate law issues and has lectured at the Institute for Law and Finance at Goethe University in Frankfurt, Germany and at the Ruhr University in Bochum, Germany.

Jobst Wibbelmann studied chemistry at the Universities of Hannover, Munich and Osnabrück. He was awarded a doctorate in chemistry. He has particular expertise in the fields of polymer and pharmaceutical chemistry. After three years of legal and practical training, subsequent to passing the examination in 1991 Jobst Wibbelmann was admitted as a German Patent Attorney. In 1992 he qualified as a European Patent Attorney. His practical activities comprise all fields of industrial property protection, notably patent procurement and patent infringement suits. He has had numerous articles published in various magazines (including the European Intellectual Property Review and the Journal of the Japanese Group of AIPPI) with particular emphasis on patent procurement. He serves clients from the United States and Japan/Korea. Jobst Wibbelmann co-authored an Amicus Curiae brief, submitted to the Supreme Court of the United States of America in relation to the "Festo" Case. Jobst Wibbelmann is further responsible for the development of noventive's Concierge Service. This is an extended service for more complex cases in the field of inventions, patents, trademarks and other IP derivatives. The aim is to achieve a comprehensive solution to a problem or problems with the help of suitable advisors from, among others, a network of former patent judges and patent examiners (DPMA, Federal Patent Court, patent litigation chambers etc.). Jobst Wibbelmann is not only familiar with intellectual property law. After more than 28 years as a partner in an internationally renowned patent law firm, he completed his business studies with an EMBA (focus: digital transformation) in 2022 (Kellogg/WHU).

Peter focuses on mergers & acquisitions (including distressed situations) and public takeovers with a particular emphasis on private equity transactions and is also involved in outsourcing transactions. Furthermore he frequently advises on corporate reorganisations and arbitrations.

Mrs Liebe is admitted to the bar in Germany as well as in England & Wales and has been a Partner of ZIMMERs since 2016. She was admitted to the German Bar (Munich, Bavaria) after completing her law studies at the Faculty of Law of the Ludwig Maximilian University of Munich and her legal traineeship at the Higher Regional Court of Munich in 2011. During her legal traineeship, she worked as a research assistant for the Max Planck Institute for Foreign and International Social Law, inter alia in sports law. As part of her work for ZIMMERs Rechtsanwälte, Ms Liebe has been representing and advising both private individuals and companies in contract law (drafting as well as enforcement), employment law, sports law and (debt) enforcement law for over 12 years. The focus of her work and specialisation is on cross-border matters, which require in-depth knowledge of private international law - especially after the exit from the EU. Mrs Liebe represents her clients in all questions of contract drafting, pre-action proceedings and in civil litigation in all instances of courts (County Court, High Court of Justice, Court of Appeal), previously successful in the Court of Appeal in Windhorst v Levy [2021] EWCA Civ 1802. Further Areas of Law: Personal Injury Professional Negligence European Law Memberships: British German Jurists‘ Association German Lawyers’ association

For more than 20 years, Attorney Stefan Winheller has been specializing in tax law. He advises and represents charitable and non-charitable foundations as well as other nonprofit organizations. He supports wealthy private individuals in Germany and abroad, companies and the public sector in the establishment of foundations, asset structuring and business succession planning. In addition, he supports companies and entrepreneurs, especially those with blockchain-based business models and/or substantial crypto assets, in establishing a tax-optimized asset and business structure (foundation models, foundation holdings, GmbH holdings, asset protection) and in international tax law regarding questions on international tax structuring and optimization - often also in an international, cross-border context. Stefan Winheller is regularly publishing articles in specialist books and magazines on his areas of expertise. He is the initiator and co-editor of the first commentary on nonprofit law published by the renowned German legal publishing house Nomos. Furthermore, he worked as a lecturer and speaker, e.g. for the Abbe Institute for Foundation Studies at the University in Jena and the University of Münster for the master's degree in “Nonprofit Management and Governance”. Stefan Winheller is a business angel and early investor for startup companies, especially in the tech sector. For more than seven years, he has been CEO of the American nonprofit organization American Friends of Germany, Inc., which supported German nonprofit organizations in their fundraising activities in the USA until the end of 2012. As founder and managing partner of WINHELLER, Stefan Winheller is in charge of the strategic direction and development of the law firm. He is married and has three children.