Patent Attorneys Ruff, Wilhelm, Beier, Dauster & Partner mbB

European Patent, Trademark and Design Attorneys

Kronenstraße 30
70174 Stuttgart
Deutschland (Germany)

Persons Responsible (Partners authorized to represent)

  • Dr. Thomas Mütschele, Dipl.-Chem. (-2023)
  • Peter Wilhelm, Dipl.-Ing.
  • Dr. Erich W. Weller, Dipl.-Phys.
  • Dr. Thomas Muschik, Dipl.-Phys.
  • Martin Wilhelm, Dipl.-Ing.
  • Florian Renger, Dipl.-Ing.
  • Jörg Baumann, Dipl.-Ing.
  • Dr. Katja Dauster, Dipl.-Ing.
  • Dr. Christoph Gerspacher, Dipl.-Chem.
  • Dr. Ulrich Stützel, Dipl.-Phys.
  • Dr. Steffen Ritter, Dipl.-Ing.
  • Dr. Paul Schwarz, M. Sc.


Telephone: +49 (0) 711 – 222 976 – 0

Data Protection Officer

Volker Möller (Dr. Merath Beratung), E-Mail: 

Enterprise Data

Our Patent Attorneys are generally also European Patent Attorneys and European Trademark and Design Attorneys:

The professional title „Patent Attorney“ is conferred by the Federal Republic of Germany by the Chamber of Patent Attorneys (Tal 29, 80331 Munich, Germany). In said chamber, our Patent Attorneys are members. The Chamber of Patent Attorneys is also supervisory authority.

The professional title „European Patent Attorney“ (authorized representative before the European Patent Office) is conferred by the European Union by the epi (Institute of Professional Representatives before the European Patent Office; Bayerstraße 83, 80335 Munich, Germany). The epi is also supervisory authority.

The professional titles „European Trademark and Design Attorney“ (authorized representative before the European Union Intellectual Property Office) is conferred by the European Union by the EUIPO (European Union Intellectual Property Office; Avenida de Europa, 4, E-03009 Alicante, Spain). The EUIPO is also supervisory authority.

The principal professional regulations for the Patent Attorneys and European Patent Attorneys in our firm are:

Online Settlement of Disputes

The European Commission provides a platform for Online Settlement of Disputes (OS) that you may find under

For any participation in procedures for settlement of disputes before a consumer arbitration board according to the Consumer Dispute Settlement Act (Verbraucherstreitbeilegungsgesetz (VSBG)), we are not prepared and not committed.

Acknowledgements for Photographs

portrait photos: Frank Paul Kistner, Stuttgart
group photo: Deniz Saylan, Stuttgart