Dr. Jan Henning Martens
Rechtsanwalt
Fachanwalt für Handels- und Gesellschaftsrecht
janhenning.martens@fgvw.de
T +49 761 21808-392
Kaiser-Joseph-Straße 284
79098 Freiburg
Martens, Jan Henning Dr.
Rechtsanwalt (Lawyer) and Partner
Certified Specialist in Corporate and Commercial Law
Studied in Tübingen and Freiburg i. Br.
Focus
Corporate Law
M&A / Company Acquisitions
Startup Advice
Commercial Law
International Commercial Law
Medical Devices and Pharmaceuticals Law
Export Control and Customs
Compliance
Languages
German, English, Portuguese, Swedish and French
News
Recommendations
Recommended lawyer for corporate law and M&A (M&A: international mid-sized deals) - (The Legal 500 Germany 2022-2025), "Special mention should be made of Dr. Martens with regard to corporate law and with regard to the diverse topics in the start-up area, which are presented by him and his team in an understandable and comprehensible manner. The consulting approach is an excellent fit for young entrepreneurs and startups."
Recommended lawyer in the area of healthcare and medical law (The Legal 500 Germany 2022-2025)
Recommended lawyer for trade and distribution (The Legal 500 Germany 2025)
Jan Henning Martens is listed as one of "Germany's Best Lawyers" 2020-2026 in the practice area of corporate law (Handelsblatt in cooperation with Best Lawyers)
Frequently recommended for M&A (JUVE Handbook Business Law Firms 2018/2019 - 2025/2026), "very constructive, precise to the point", “extremely competent contact person, very responsive, practical, and extremely pleasant”
Highly recommended lawyer for M&A - Small & Mid-Cap transactions (Leaders League 2022-2025) and for Insolvency Law (Leaders League 2024)
Recommended lawyer in the practice area of corporate and M&A (M&A: international mid-sized deals) as well as trade and distribution (The Legal 500 Germany 2018)
Recommended in the practice areas of corporate and M&A: mid-sized international deals (The Legal 500 EMEA 2018)
Recommended in the practice areas of trade and distribution (The Legal 500 EMEA 2018)
Publications
- Vertragliches und nachvertragliches Wettbewerbsverbot für GmbH-Geschäftsführer, Teil 2 (Contractual and post-contractual non-competition clauses for limited liability company managing directors, part 2), GmbH-Steuerpraxis 2020, issue 11, p. 329 (together with Stefan Lammel and Tina Bieniek)
- Vertragliches und nachvertragliches Wettbewerbsverbot für GmbH-Geschäftsführer, Teil 1 (Contractual and post-contractual non-competition clauses for limited liability company managing directors, part 1), GmbH-Steuerpraxis 2020, Issue 10, p. 293 (together with Stefan Lammel and Tina Bieniek)
- Co-author of the handbook Manz/Mayer/Schröder: Die GmbH (1st ed., Haufe Verlag 2020)
- Schlichtungs-, Mediations- und Schiedsverfahren für die GmbH (Conciliation, mediation and arbitration proceedings for the German limited liability company), together with Stefan Lammel and Tina Bieniek, GmbH-Steuerpraxis 2020, issue 1, p. 14
Gesellschafterstreitigkeiten in der Personengesellschaft, insbesondere der GmbH & Co. KG, Teil 2 (Shareholder disputes in the partnership, in particular the limited partnership with a private limited company as general partner, part 2), together with Stefan Lammel and Tina Bieniek, GmbH-Steuerpraxis 2019, issue 5, p. 139
- Gesellschafterstreitigkeiten in der Personengesellschaft, insbesondere der GmbH & Co. KG, Teil 1 (Shareholder disputes in the partnership, in particular the limited partnership with a private limited company as general partner, part 1), together with Stefan Lammel and Tina Bieniek, GmbH-Steuerpraxis 2019, Issue 4, p. 112
- Die Treuepflicht des GmbH-Gesellschafters (The duty of loyalty of the GmbH partner), together with Dr. Stefan Lammel and Tina Bieniek), GmbH tax practice 2018, 170
- Das Ausscheiden des Gesellschafters aus der GmbH (The resignation of the shareholder from the GmbH) (jointly with Dr. Stefan Lammel and Tina Bieniek), GmbH-Steuerpraxis 2018,37
- Compliance-Management-Systeme sind bei der Bußgeldbemessung nach § 30 OWiG zu berücksichtigen (Compliance management systems are to be taken into account in the assessment of fines according to § 30 OWiG), note on BGH, judgement of 09.05.2017,1 StR 265/16 (together with Dr. Moritz Jenne), CCZ 2017, 285
- Die Besteuerung des GmbH-Gesellschafters bei Wegzug ins Ausland [The Taxation of a GmbH-Partner after a Move Abroad] (together with Stefan Lammel), GmbH-Steuerpraxis 2016, 71.
- Die "Wegzugsbesteuerung" der GmbH ins Ausland [The Exit Taxation of a GmbH Abroad] (together with Stefan Lammel), GmbH-Steuerpraxis 2016, 167.
- Hürden für Schadensersatz nach Unternehmenskauf [Barriers for Claims for Damages after Business Acquisitions], Platow Recht No. 129, p.7 (together with Barbara Mayer)
- Nicht-Entlastung wegen unentschuldigter Pflichtverletzungen der Geschäftsführung [Non-discharge of Management due to Unexcused Violation of Duty] - comment on OLG Munich, decision dated 22 July 2015, file no. 7 U 2980/12 (together with Barbara Mayer), IWRZ 2015, p. 30 et seq.
- Neue Anforderungen an Rangrücktrittsvereinbarungen mit einer GmbH [New Requirements with Regard to Subordination Agreements with a German Limited Liability Company] (together with Dr. Ingo Reinke and Dr. Stefan Lammel), GmbH-Steuerpraxis 2015, p. 258 et seqq.
- Die Haftung des Kommanditisten in der GmbH & Co. KG [The limited partners’ liability in the GmbH & Co. KG] together with Dr. Stefan Lammel, GmbH-Steuerpraxis 2014, 201 et seq.
- Managementstrukturen in der SPE [Management Structures in European Private Companies (SPEs)], Frankfurt am Main 2013
- Wettbewerbsverbote in der GmbH [Restraints of Competition in German Private Limited Liability Companies (GmbHs)] together with Dr. Stefan Lammel, GmbH-Steuerpraxis 2013, 44 et seq.
- Absolute Geltung des Aufrechnungsverbotes nach § 393 BGB [The Absolute Application of the No Set-Off Rule under Paragraph 393 German Civil Code (BGB)], StudZR 2010, 147-158
- Regular author of up-to-date articles for Haufe-Steuer Consultant
- Co-author of Haufe-Datenbank zum Gesellschaftsrecht [Haufe's Database on Company Law]
Memberships
- Arbeitsgemeinschaft Handels- und Gesellschaftsrecht im Freiburger Anwaltverein [The Freiburg Bar Association's Working Group on Company and Commercial Law]
- Association Internationale des Jeunes Avocats (AIJA) [International Association of Young Lawyers]
- former Deputy Chairman of the Supervisory Board of HumanOptics AG (securities no. A1MMCR)