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Credits/Mandatory Information according to the Interstate Media Services Agreement (MDStV)/Tele Services Act (TDG)

Steffan & Kiehne 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

Steffan & Kiehne 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

R+V Allgemeine Versicherung AG
Taunusstraße 1
65193 Wiesbaden
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:

  • Patent Attorney Ordinance (Federal Law Gazette Volume I 1966, p. 557, last amended by the Act on the Modernization of Procedures in the Law Governing the Patent Attorney Profession of 14 August 2009, Federal Law Gazette, Volume I, p. 2827).
  • Professional Patent Attorney Code   (Notifications of 1997, p. 243 et seq.; as amended by the Resolution of 14 November 2006, coming into force on 14 March 2007 and Resolution of 17 April 2008, coming into force on 3 September 2008)
  • FICPI Rules of Conduct   (approved by the Executive Committee in its meeting in Bissone on 27 April to 1 May 1982 and amended on 8 September 1997 in Copenhagen, on 19 October 1998 in Florence and on 15 April 2008 in Sydney)
  • Code of Professional Conduct of the epi   (adopted by the Council of the Institute in Brussels on 13 November 1979, supplemented on 5 November 1985 in Munich and on 7 May 1996 in Dublin, and amended on 3 October 1997 in Strasbourg and on 8 May 2001 in Madrid)

Copyright notice

© Copyright Steffan & Kiehne 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.