A tool for achieving entrepreneurial goals.

With a blend of business acumen and legal expertise, I provide counsel to my clients on all matters that arise during the life cycle of a company. I also offer assistance with respect to corporate succession planning, including the estate law aspects of corporate law. My advisory services encompass, among others:

  • Establishment of capital and personal corporations, including the drafting of tailormade articles of association or shareholder agreements;
  • establishment of joint ventures;
  • drafting and negotiation of shareholder and other corporate agreements, particularly in the context of private equity;
  • implementation of capital measures;
  • planning and implementation of corporate restructuring measures such as carve outs, mergers and the like;
  • preparation and support of shareholder meetings;
  • advice to corporate bodies on corporate and liability issues; and
  • corporate litigation and arbitration.


Responsible for content:

Dr. Christoph Keller
Wilmersdorfer Str. 106
10629 Berlin (DE)
Phone: +49 151 / 744 069 29
Fax +49 322 237 111 60
VAT ID: DE 359567671

Design & development

nexxo - web agency
Wörthstr. 27
81667 Munich (DE)
Phone: +39 340 87 39 814
VAT ID: DE 296290843


Lisa Hantke - Photography
Türkenstraße 48
80799 Munich (DE)
Phone: +49 (0) 174 / 930 61 62
VAT ID: DE 321328083

Bar Admission

Dr. Christoph Keller is admitted to practice in the Federal Republic of Germany and a member of the Bar Association for the Higher Regional Court District of Berlin, Littenstraße 9, 10179 Berlin. Federal Lawyers’ Act, the Professional Code of Conduct, the Specialist Lawyers’ Code of Conduct, the Lawyers’ Remuneration Act and the Professional Rules for Lawyers of the European Union. They can be found at under the heading “Berufsrecht”.


Professional liability insurance is provided by Allianz Versicherungs-AG in 10900 Berlin. The territorial scope of the insurance coverage includes activities in the member states of the European Union and thus complies at least with the requirements of § 51 of the Federal Lawyers' Act (BRAO).


The copyright or exclusive usage rights to the content of this Website (including the photos) belong to Dr. Christoph Keller. Any reproduction, transmission, or distribution of the content of the Website requires written consent from Dr. Christoph Keller. The copyright for the photos published on this Website belongs to Mrs. Lisa Hantke, with the exception of the photo 'Vita', for which the copyright belongs to Dr. Christoph Keller.


As the operator of this Website, Dr. Christoph Keller is responsible only for his own contents. However, he is not obliged to independently review third-party information. All efforts have been made to ensure the accuracy of the information and links contained on these webpages. However, any liability in connection with the use of the information, links or reliance on their accuracy is excluded. The respective provider or operator of the linked Website is responsible for the contents of linked Websites. The information contained on these webpages does not constitute legal advice.

Applicable Law

The legal information on this site as well as all questions and disputes in connection with this Website are subject to the laws of the Federal Republic of Germany.


Responsibility for Data Processing

Dr. Christoph Keller
Wilmersdorfer Str. 106
10629 Berlin (DE)
Phone: +49 151 / 744 069 29

Supervisory Authority

The supervisory authority responsible for me or for complaints against me is Berliner Beauftragte für Datenschutz und Informationsfreiheit, Alt-Moabit 59-61, 10555 Berlin.

Collection, Processing, Use and Forwarding of Personal Data

a) When visiting the Website
When you access my Website, information is automatically sent to the server of my Website by the browser used on your end device. This information is temporarily stored in a so-called log file. The following information is collected without your intervention and stored until automated deletion:

  • IP address of the requesting computer,
  • date and time of access,
  • name and URL of the retrieved file,
  • Website from which access is made (referrer URL),
  • browser used and, if applicable, the operating system of your computer and the name of your access provider.

I process the aforementioned data for the following purposes:

  • Ensuring a smooth connection setup of the Website,
  • ensuring convenient use of my Website,
  • evaluation of system security and stability, as well as
  • other administrative purposes.

The legal basis for data processing is Art. 6 para. 1 sentence 1 lit. f GDPR. My legitimate interest follows from the purposes of data collection listed above. In no case do I use the collected data to draw conclusions about your person.

b) When using my contact form

For questions of any kind, I offer you the opportunity to contact me via a form provided on the Website. In this case, it is necessary to provide a valid email address so that I know who the inquiry is from and to be able to answer it. Further information can be provided on a voluntary basis.

The data processing for the purpose of contacting me is carried out in accordance with Art. 6 para. 1 sentence 1 lit. a GDPR on the basis of your voluntarily given consent.

The personal data collected by me for the use of the contact form will be automatically deleted after the request made by you has been processed.

Disclosure of Data

I host my Website with nexxo GmbH. The provider is nexxo GmbH, Wörthstr. 27 81667 Munich (hereinafter: "nexxo"). When you visit my Website, nexxo collects various log files, including your IP addresses.

For more information, please refer to nexxo's privacy policy:

The use of nexxo is based on Art. 6 para. 1 lit. f GDPR. I have a legitimate interest in a reliable presentation of my Website. If the appropriate consent has been obtained, the processing is carried out exclusively on the basis of Art. 6 para. 1 lit. a GDPR; consent can be revoked at any time.

I have concluded a contract for commissioned data processing (AVV) with the above-mentioned provider. This is a legally required contract that ensures that this provider processes the personal data of my Website visitors only on my instructions and in compliance with the GDPR.

Other than that, your personal data will not be disclosed to third parties for purposes other than those listed below.
I only disclose your personal data to third parties if:

  • You have given your express consent for this in accordance with Art. 6 para. 1 sentence 1 lit. a GDPR,
  • the disclosure is necessary in accordance with Art. 6 para. 1 sentence 1 lit. f GDPR for the assertion, exercise or defense of legal claims and there is no reason to assume that you have an overriding legitimate interest in not disclosing your data,
  • there is a legal obligation for the transfer according to Art. 6 para. 1 sentence 1 lit. c GDPR, and t
  • his is legally permissible and necessary for the processing of contractual relationships with you according to Art. 6 para. 1 sentence 1 lit. b GDPR.

Your Rights

You have the right to:

  • Request information about your personal data processed by me in accordance with Art. 15 GDPR. In particular, you can request information about the purposes of processing, the categories of personal data processed, the categories of recipients to whom your data has been or will be disclosed, the planned storage period, the existence of a right to rectification, erasure, restriction of processing or objection, the existence of a right to lodge a complaint, the source of your data, if not collected by me, and the existence of automated decision-making, including profiling, and meaningful information about its details;
  • request without undue delay the rectification of inaccurate or completion of your personal data stored by me in accordance with Art. 16 GDPR;
  • request the erasure of your personal data stored by me in accordance with Art. 17 GDPR, unless the processing is necessary for the exercise of the right to freedom of expression and information, for compliance with a legal obligation, for reasons of public interest or for the establishment, exercise or defense of legal claims;
  • request the restriction of processing of your personal data in accordance with Art. 18 GDPR if the accuracy of the data is contested by you, the processing is unlawful, but you oppose its erasure and I no longer need the data, but you require it for the establishment, exercise or defense of legal claims or you have objected to the processing pursuant to Art. 21 GDPR;
  • receive your personal data that you have provided to me in a structured, commonly used and machine-readable format or request the transmission to another controller in accordance with Art. 20 GDPR;
  • revoke your consent given to me once in accordance with Art. 7 para. 3 GDPR at any time. This will result in me no longer being able to continue the data processing based on this consent in the future, and
  • lodge a complaint with a supervisory authority in accordance with Art. 77 GDPR. As a rule, you can contact the supervisory authority of your habitual residence or place of work, or my office.

Objection Right

If your personal data is processed based on legitimate interests according to Art. 6 (1) sentence 1 lit. f of the General Data Protection Regulation (GDPR), you have the right to object to the processing of your personal data in accordance with Art. 21 GDPR, to the extent that there are reasons arising from your particular situation or the objection is directed against direct marketing. In the latter case, you have a general right to object that will be implemented without stating a specific situation. If you wish to exercise your right of revocation or objection, simply send an email to

Data security

During your visit to the Website, I use the common SSL (Secure Socket Layer) protocol in conjunction with the highest level of encryption supported by your browser. Usually, this involves 256-bit encryption. If your browser does not support 256-bit encryption, I fall back to 128-bit v3 technology. You can recognize whether an individual page of my Website is transmitted encrypted by the closed display of the key or lock symbol in the lower status bar of your browser. Furthermore, I employ appropriate technical and organizational security measures to protect your data against accidental or intentional manipulation, partial or complete loss, destruction or unauthorized access by third parties.

Information on Cookies

What are Cookies?

Cookies are small text files that contain small amounts of information and are downloaded to your computer or mobile device when you visit a website. Cookies are then sent back to the website they came from on each future visit, or even to another website that recognises the cookie. Cookies are useful because they allow websites to recognise individual users' devices (such as passwords, the language chosen, font size, other display settings). Cookies thus allow a website to be adapted to your interests so that they do not have to be re-entered each time. Cookies are therefore used to perform computer authentications, monitor visits and observe the behaviour of users on a website. They may also include a unique identifier code that tracks users' navigation within the website for statistical or advertising purposes. While navigating the website, you may also receive cookies from other websites or web servers on your computer or mobile device (see 'Third-party cookies'). Some functionalities might not work or not work properly without cookies, so in certain cases they are technically necessary for the proper functioning of the website.

There are different types of cookies. According to their characteristics and functions, they can remain stored on your computer or on your mobile device for different lengths of time: the session cookies, which are automatically deleted as soon as the browser is closed; the so-called persistent cookies, which remain on the user's device until a predetermined time. Under current legislation in Italy, explicit consent is not always required for the use of cookies. In particular, the so-called 'technical' cookies do not require it, for example to transmit a message through an electronic communication network, or to provide a service explicitly requested by the user. They are, in other words, indispensable cookies for the proper functioning of the site or for activities requested by the user.

  • "Analytics cookies", used directly by the site operator to collect information regarding the number and behaviour of users of this very website.
  • Functional cookies: these cookies allow users to navigate based on a number of selected functions (such as language settings, the goods selected for purchase) with the purpose of improving the comfort and performance of the website.

For cookies oriented to the creation of user profiles for the creation of advertising messages, the prior consent of the user is required and is carried out in accordance with his preferences, which can be identified from the navigation.

What types of cookies do we use?

This website does not use cookies for profiling. In particular, this website uses

  • Technical cookies, i.e. for navigation or visits, mandatory for the proper functioning of the website or for the use of the content and services offered on the part of users.

Information received via cookies is not used to identify users. Cookies are only used for the purposes described above.

Cookie settings in the web browser

In addition, users can also decide via corresponding settings in the browser whether the cookies are blocked or deleted (in full or in part). However, if all or some cookies are disabled, it is possible that the website will not function properly or that certain services or functions will not be available. Users may have to manually enter some changes, information or preferences each time they visit. Below we have compiled links where you can find detailed information on how to disable cookies in popular browsers.