According to § 5 TMG

Homepage of the law firm Kehl, Ascherl, Liebhoff & Ettmayr, Patent Attorneys Partnership mbB
Legal form: Partnership company with limited professional liability (PartG mbB)Content support:
Dipl.-Ing. Andreas Ettmayr
Dipl.-Ingl. Benjamin Ohmer

Partnership Register AG Munich,
PR 1125

Address Headquarters Munich: Address Branch Office Hamburg:
Emil-Riedel-Str. 18 Steinhöft 11
80538 Munich Slomannhaus (6.OG)
Phone: +49 / (0) 89 – 99 89 49 00 20459 Hamburg
Telefax: +49 / (0)89 – 99 89 49 01 Email:

Authorised representatives:

Andreas Ascherl
Patentanwalt, European Patent Attorney, European Trademark and Design Attorney

Andreas Ettmayr
Patentanwalt, European Patent Attorney, European Trademark and Design Attorney

Benjamin Ohmer
Patentanwalt, European Patent Attorney, European Trademark and Design Attorney

Dominik Cabrerizo
Patentanwalt, European Patent Attorney, European Trademark and Design Attorney

Kristina Becker
Patentanwältin, European Patent Attorney, European Trademark and Design Attorney

Competent chamber in Germany for patent attorneys:

Im Tal 29
80331 Munich
Phone: +49 / (0) 89/24 22 78-0
Fax: +49 / (0) 89 24 22 78 24 
Patent Attorney Chamber  (supervision according to § 6 Nr. 3 TDG )

Profession-specific information according to § 6 TDG (provider identification)

The following job-specific regulations apply to patent attorneys:

Professional Liability Insurance

The professional liability insurance exists with Zurich Insurance plc NfD, 53287 Bonn. The territorial scope of the insurance cover includes activities at least in the Member States of the European Union and thus meets at least the requirements of

  • Section 45 (1) of the Patent Attorney Regulations (PatAnwO)
  • § 51 Federal Lawyers Act (BRAO)

The information on this website is intended for the purpose of general information only and does not constitute professional legal advice per se. The transfer and receipt of this information does not constitute a business relationship of any kind.

The contents of our pages were created with all due care. However, we can not assume any liability for their accuracy, completeness and up-to-dateness. No liability is accepted for third-party content of external websites that can be reached via the links provided.

Please note that communication over the Internet is not protected against access by unauthorized third parties. To protect against access by unauthorized third parties, we ask you to choose other means of communication or to encrypt your e-mails. You can download our PGP public key  here . Commercial advertising emails are undesirable and further submissions are answered with warnings.

All persons named on this website hereby object to any commercial use and disclosure of their data (see § 28 BDSG).

Dispute settlement

The European Commission provides a platform for online dispute resolution (OS): .
Our e-mail address can be found above in the imprint.

We are not willing or obliged to participate in dispute resolution procedures before a consumer arbitration board.

Liability for content

As a service provider we are responsible according to § 7 Abs.1 TMG for own contents on these sides according to the general laws. According to §§ 8 to 10 TMG, however, we as a service provider are not obliged to monitor transmitted or stored third-party information or to investigate circumstances that indicate an illegal activity.

Obligations to remove or block the use of information under general law remain unaffected. However, liability in this regard is only possible from the moment of knowledge of a specific infringement. Upon notification of appropriate violations, we will remove this content immediately.

Liability for links

Our offer contains links to external websites of third parties over whose contents we have no influence. Therefore we can not assume any liability for these external contents. The content of the linked pages is always the responsibility of the respective provider or operator of the pages. The linked pages were checked for possible legal violations at the time of linking. Illegal content was not recognizable at the time of linking.

However, a permanent content control of the linked pages is not reasonable without concrete evidence of a violation of law. Upon notification of violations, we will remove such links immediately.


The content and works on these pages created by the site operators are subject to German copyright law. The duplication, processing, distribution and any kind of exploitation outside the limits of copyright require the written consent of the respective author or creator. Downloads and copies of this site are for private, non-commercial use only.

As far as the contents on this side were not created by the operator, the copyrights of third parties are considered. In particular contents of third parties are marked as such. Should you still be aware of a copyright infringement, we ask for a note. Upon notification of violations, we will remove such content immediately.