News archive 2023

Dr Heiner Kahlert publishes article on constitutional law issues in arbitration

In the current issue 1/2023 of the German Arbitration Journal (SchiedsVZ), Dr Heiner Kahlert has published an article on the constitutional framework of arbitration. This topic has gained increased attention in recent years, particularly due to the public debate on investment arbitration tribunals as well as on sports arbitration. In his article, Dr Heiner Kahlert explains to what extent German constitutional law protects arbitration, but also sets limits to it.

Heiner Kahlert, David Menz and Maximilian Wegge listed by “Who’s Who Legal” in “Germany – Sports and Entertainment 2023”

We are thrilled that Heiner Kahlert, David Menz und Maximilian Wegge have been listed by “Who's Who Legal” in the category “Germany - Sports and Entertainment 2023”.
Here's what WWL says about us:

  • The “excellent” Heiner Kahlert is a smart lawyer with incredible experience in sports arbitration.
  • The "excellent" David Menz is a very highly regarded sports expert with a varied contentious and advisory practice.
  • Maximilian Wegge garners widespread plaudits for his extensive experience in contract drafting and arbitration proceedings.


A huge thank you goes out to all the clients and peers who voted for us. We see this award as an incentive to continue putting our heart and soul into supporting our clients.

Merry Christmas and a happy and healthy new year!

Dr. Tinusch Jalilvand as lecturer in the training programme “Sustainability management in sports and sports business”

Dr. Tinusch Jalilvand joined the training programme "Sustainability Management in Sports and Sports Business" organised by the Leuphana University Lüneburg, SPONSORs and the German Football League (DFL) as lecturer for the topic of "Law and Sustainability" in October 2022. In this programme, he gives lectures on various legal aspects of sustainability, including human rights due diligence obligations of sports organisations towards internal and external stakeholders (e.g. in the sports organisations’ supply chain). For more information on the training programme, please click here.

Maximilian Wegge wins Lexology Client Choice 2022 Award for Sports & Entertainment in Germany

Congratulations to Maximilian Wegge for winning the Lexology Client Choice 2022 Award for Sports & Entertainment in Germany!

Lexology bases its awards on surveys of in-house counsel subscribers to Lexology as well as on feedback from international in-house counsels and the Lexology Client Choice website.

Client Choice recognises those individuals around the world that stand apart for the excellent client care they provide and the quality of their service. The criteria for this recognition focus on an ability to add real value to clients’ business above and beyond the other players in the market.

We are very pleased to be recognised for the above as the Martens Team is constantly working on providing the best care and services to our clients. Sports law is our passion!

NJW Report on the Development of Sports Law

Dr Heiner Kahlert and David Menz published a report on the development of sports law in 2022 in the Neue Juristische Wochenschrift (NJW – 46/2022 edition, p. 3334 et seq.). The report picks up where the report for 2021 (NJW – 51/2021 edition, pp. 3700 et seq.) left off and provides an overview of relevant decisions from various legal fields affected by sports law.

Maximilian Wegge published article in SpuRt

Maximilian Wegge published the article "Kryptowährungen, Fan-Tokens und NFTs - ein Blick durch die Sportbrille" (cryptocurrencies, fan tokens and NFTs - a peek through sports glasses) in "SpuRt" (Journal for Sport and Law). The crypto industry is increasingly gaining ground in sports. With that in mind, Maximilian Wegge illustrates in his article the legal framework in which cryptocurrencies, fan tokens and NFTs operate and evaluates the opportunities and risks for decision-makers in sport.

David Menz and Dr Tinusch Jalilvand publish article in LawInSport

David Menz and Dr Tinusch Jalilvand publish the article "Going Green? A first look at the German Football League's Sustainability Criteria." in LawInSport. The authors place and categorize the new DFL Sustainability Criteria legally within the DFL Licensing Regulations. Moreover, they compare the DFL Sustainability Criteria with their legal sources and, on this basis, look for ways for further development of the DFL Sustainability Guideline."

Dr Heiner Kahlert and David Menz publish a chapter in the book “Sporting Succession in Football”

Dr Heiner Kahlert and David Menz contributed to the book “Sporting Succession in Football” by J. Cambreleng Contreras/S. Samarth/ J.F. Vandellós Alamilla. In the chapter on sporting succession in basketball, the authors analyse the requirements for the extension of sanctions imposed on debtors of a BAT award to their “sporting successor” in accordance with the internal regulations of the international basketball federation (FIBA) with a particular focus on the CAS jurisprudence that has been issued in this context over the last years.

David Menz promoted to Salary Partner and Maximilian Wegge promoted to Senior Associate

We are pleased to announce that David Menz and Maximilian Wegge have been promoted to Salary Partner and Senior Associate respectively. The entire team of Martens Lawyers extends their warmest congratulations to David and Maximilian on their well-deserved promotions, and wishes them both the very best in their new roles. With this line-up, we look forward with utmost confidence to the future of our law firm!

Our CO2 offsetting for 2021/22

After our compensation payment to atmosfair on 27 December 2021, we have now also compensated our CO2 emissions for the first half of 2022. As usual, we calculated our CO2 emissions from May 2021 to May 2022 with the help of a CO2 calculator (35,000 kg) and determined the total amount required for compensation (EUR 800). We then rounded up this amount to a total of EUR 1,000 and donated the money to atmosfair. You can find the donation certificates here.
We are happy to continue to be a climate-neutral law firm. However, since this should not be the end of our efforts for a better future, for 2021/2022 we have, for the first time, paid more than would have been necessary to offset our carbon footprint. We have thus taken the first step towards becoming a "climate positive company". However, we do not intend to stop there. In the future, we will do everything in our power to help other companies and individuals to reduce their carbon footprint. As soon as there is something to report in this regard, you will find out here.

Dr Heiner Kahlert and Maximilian Wegge published report on online platform “Lexology”

Dr Heiner Kahlert and Maximilian Wegge  have contributed to the chapter on dispute resolution in Germany on the online platform "Lexology" The report will be part of the tool "Getting The Deal Through", which shall provide in-house lawyers with answers to the most important legal and regulatory questions that may arise in business transactions and legal disputes in Germany. The report focuses on the topics of court proceedings, arbitration proceedings as well as alternative dispute resolution. We are pleased to be in charge of submitting further contributions to the chapter on dispute resolution for at least two more years. For the report, which is published once a year, please click here. (Reproduced with permission from Law Business Research Ltd. This article was first published in Lexology GTDT – Dispute Resolution 2022. For further information, please click here.)

Martens Rechtsanwälte selected as “Top Law Firm for Sports Law” by Wirtschaftswoche

The main German business weekly Wirtschaftswoche (WiWO) has included Martens Rechtsanwälte in its newly created list of "WiWo Top Law Firms – The Most Renowned Law Firms and Lawyers for Sports Law". Moreover, Dr Heiner Kahlert is listed as a highly recommended sports lawyer. Both listings are based on a survey conducted by an independent jury of the Handelsblatt Research Institute among 460 sports lawyers from 315 law firms. For the list as published on WiWo.de in German, please click here.

Heiner Kahlert appointed as CAS arbitrator

A few days ago, Heiner Kahlert was admitted to the list of arbitrators of the Court of Arbitration for Sport (CAS) in Lausanne. In addition to his experience in commercial and investment arbitration, Heiner also has more than a decade of experience from numerous CAS arbitrations, first as an ad-hoc clerk to CAS tribunals and then as counsel representing parties before the CAS. In moving into the arbitrator role, Heiner follows the example set by the founder of our law firm, the late Dr Dirk-Reiner Martens, who was already on the CAS arbitrator list when the CAS was founded and who was subsequently appointed in nearly 200 CAS proceedings, including at four Olympic Games.
The CAS acts, on the one hand, as a “supreme court” for appeals against decisions of sports federations from around the globe. On the other hand, the CAS also decides as a regular court of arbitration on a wide variety of contractual disputes related to sport. Arbitrators in CAS proceedings can only be those persons who have been admitted to the list of arbitrators. Heiner Kahlert is now one of 15 CAS arbitrators with German nationality.

Article by David Menz and Dr Tinusch Jalilvand on the importance of the „legitimate interest“ in accordance with Article 6 para 1 lit. f GDPR in the context of processing sports data

David Menz and Dr Tinusch Jalilvand have published an article in the German sports law journal SpoPrax regarding the importance of the „legitimate interest“ according to Article 6 para 1 lit. f GDPR in the context of processing sports data. In their article, the authors focus in particular on the requirements for a lawful processing of so called “primary sports data” by different stakeholders in sport, considering recent developments around the “Project Red Card” in the United Kingdom. Furthermore, the authors analyse the requirements and consequences of a potential licensing of the processing of primary sports data. The article is published in edition 2/2022 of the SpoPrax at page 60 et. seq.
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