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LEIFERT & STEFFAN Patentanwälte
Partnerschaftsgesellschaft mbB
Burgplatz 21-22
D-40213 Düsseldorf
Phone. +49 211 602220-0
Fax +49 211 602220-22

Editorial responsibility:
Patent Attorney Dr. Gerhard Steffan

Legal Form

Leifert & Steffan is a partnership with limited liability (Partnerschaftsgesellschaft mbB) of patent attorneys under the German Partnership Act (Partnerschaftsgesellschaftsgesetz).

Registered office

Düsseldorf, recorded in the Partnership Register (Partnerschaftsregister) of the Local Court (Amtsgericht) Essen, PR 4345
EU VAT ID: DE 319 282 249


Dr. Gerhard Steffan Patent Attorney, European Patent, Trademark and Design Attorney
Dr. Ulf Kiehne Patent Attorney, European Patent, Trademark and Design Attorney

Professional Liability Insurance

Zurich Insurance plc
German Office
53287 Bonn
Territorial coverage: worldwide

Mandatory Information according to § 5 Telemedia Act (TMG)

Patent bar association in charge:
Patentanwaltskammer, Tal 29, 80331 Munich
Phone +49 89 242278-0, Fax +49 89 242278-24

Professional bodies and licenses:

Dr. Gerhard Steffan and Dr. Ulf Kiehne are members of the patent bar association and the epi.

Legal professional titles and states in which they were conferred:
Dr. Gerhard Steffan and Dr. Ulf Kiehne are patent attorneys licensed in the Federal Republic of Germany and authorized representatives as European Patent Attorneys before the European Patent Office as well as European Trademark & Design Attorneys before the European Intellectual Property Office (EUIPO; Alicante, Spain;

The work of the patent attorneys presented on this home page is subject to the following regulations governing the profession:

Copyright notice

© Copyright LEIFERT & STEFFAN Patentanwälte Partnerschaftsgesellschaft mbB, Düsseldorf. All rights reserved. All texts, artwork, graphics, audio, video and animated files as well as their arrangements are subject to copyright law and other laws on the protection of intellectual property. They may not be copied or altered for trade purposes or transmission or used on other websites. We point out that the websites also contain artwork that is subject to the copyright of third parties. Texts, artwork, graphics and layout of these pages are subject to global copyright. Any unauthorized use, reproduction or transmission of isolated contents or entire pages is subject to prosecution under criminal and civil law. For this purpose, cease-and-desist and claims for compensation, surrender or destruction of the duplication devices and the public announcement of the verdict are possible solely under German civil law. Claims for injunctive relief are secured by the court with disciplinary fines of up to 250,000 euros or prison sentence of up to six months. In isolated cases, prosecution under criminal law may carry imprisonment of up to 5 years.