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Our Team for your success

Thomas J. Hager

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Studied physical engineering at the University of Applied Sciences (FH) in Munich.
  • He began his training in patent law in 1990, and was admitted as European patent attorney in 1996 and as German patent attorney in 1998.

Areas of expertise:

  • General physical engineering
  • Chemical process engineering
  • Electrical engineering
  • Automotive engineering
  • Machine tools

Scientific experience in the area of biofluid dynamics at the H.B. Wallis Research Institute.

  • Guest lecturer at the Munich Technical College

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English, French

t.hager@hoefer-pat.de
Dipl. Ing. (FH) Physical Engineering
Dipl. Ing. (FH) Physical Engineering

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Studied physical engineering at the University of Applied Sciences (FH) in Munich.
  • He began his training in patent law in 1990, and was admitted as European patent attorney in 1996 and as German patent attorney in 1998.

Areas of expertise:

  • General physical engineering
  • Chemical process engineering
  • Electrical engineering
  • Automotive engineering
  • Machine tools

Scientific experience in the area of biofluid dynamics at the H.B. Wallis Research Institute.

  • Guest lecturer at the Munich Technical College

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English, French

E-Mail: t.hager@hoefer-pat.de

Ingo Görz

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Born 1968 in Nienburg/Weser. Studied electrical engineering and IT at the Technical University of Munich.
  • He began his training in patent law in 1995, and was admitted as European patent attorney in 1998 and as German patent attorney in 1999.

Areas of expertise:

  • Electrical engineering
  • Automation
  • Communications engineering
  • Communication networks
  • Control software

Scientific and practical experience in radar technology to measure distances for application in the automotive area.

Scientific and practical expertise at Siemens in the area of network technology.

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English

i.goerz@hoefer-pat.de
Dipl. Ing. Electrical Engineering and IT
Dipl. Ing. Electrical Engineering and IT

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Born 1968 in Nienburg/Weser. Studied electrical engineering and IT at the Technical University of Munich.
  • He began his training in patent law in 1995, and was admitted as European patent attorney in 1998 and as German patent attorney in 1999.

Areas of expertise:

  • Electrical engineering
  • Automation
  • Communications engineering
  • Communication networks
  • Control software

Scientific and practical experience in radar technology to measure distances for application in the automotive area.

Scientific and practical expertise at Siemens in the area of network technology.

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English

E-Mail: i.goerz@hoefer-pat.de

Björn M. Otto

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Born 1978 in Bremen. Studied electrical engineering with a major in IT at the Technical University Dresden.
  • He began his training in patent law in 2008, and was admitted as German patent attorney in 2011 and as European patent attorney in 2013.

Areas of expertise:

  • Electrical engineering
  • Technical acoustics, ultrasound
  • Automotive engineering
  • Telecommunications
  • Display/user interface concepts, gesture control

Scientific and practical expertise in the area of technical acoustics (transfer pathway design).

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English

b.otto@hoefer-pat.de
Dipl. Ing. Electrical Engineering
Dipl. Ing. Electrical Engineering

Partner, German patent attorney, European patent attorney, European trademark and design attorney

  • Born 1978 in Bremen. Studied electrical engineering with a major in IT at the Technical University Dresden.
  • He began his training in patent law in 2008, and was admitted as German patent attorney in 2011 and as European patent attorney in 2013.

Areas of expertise:

  • Electrical engineering
  • Technical acoustics, ultrasound
  • Automotive engineering
  • Telecommunications
  • Display/user interface concepts, gesture control

Scientific and practical expertise in the area of technical acoustics (transfer pathway design).

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English

E-Mail: b.otto@hoefer-pat.de

Xiaolu Mirlach

European patent attorney, Chinese patent attorney, Chinese trademark and design attorney

  • She was born in Xi’an and studied electrical engineering and IT at the Technical University of Munich.
  • After completing her studies, she began working in patent law and was admitted as Chinese patent attorney in 2015 and as European patent attorney in 2016.

Areas of expertise:

  • Communications engineering
  • Electrical engineering
  • Multimedia technology
  • Automation
  • Optics

Scientific and practical expertise in the area of communications engineering and multimedia technology.

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English, Chinese

info@hoefer-pat.de
M. Sc. Electrical Engineering and IT
M. Sc. Electrical Engineering and IT

European patent attorney, Chinese patent attorney, Chinese trademark and design attorney

  • She was born in Xi’an and studied electrical engineering and IT at the Technical University of Munich.
  • After completing her studies, she began working in patent law and was admitted as Chinese patent attorney in 2015 and as European patent attorney in 2016.

Areas of expertise:

  • Communications engineering
  • Electrical engineering
  • Multimedia technology
  • Automation
  • Optics

Scientific and practical expertise in the area of communications engineering and multimedia technology.

Fields of expertise:

  • Patents, trademarks and design rights
  • Appeals, opposition and invalidity proceedings
  • Revocation and patent infringement proceedings

Languages: German, English, Chinese

E-Mail: info@hoefer-pat.de

Jürgen Dirks

Patent engineer

  • Born 1966 in Delmenhorst. Studied electrical engineering at the Technical University in Braunschweig.
  • After completing his graduate (Diploma) thesis in the area of communications engineering, he worked as an ASIC development engineer for several companies in Germany and the USA.

Areas of expertise:

  • Electrical engineering
  • Chip development
  • Semiconductors

Practical experience in the area of application-specific chip development and semiconductor technology.

Languages: German, English, French

info@hoefer-pat.de
Dipl. Ing. Electrical Engineering
Dipl. Ing. Electrical Engineering

Patent engineer

  • Born 1966 in Delmenhorst. Studied electrical engineering at the Technical University in Braunschweig.
  • After completing his graduate (Diploma) thesis in the area of communications engineering, he worked as an ASIC development engineer for several companies in Germany and the USA.

Areas of expertise:

  • Electrical engineering
  • Chip development
  • Semiconductors

Practical experience in the area of application-specific chip development and semiconductor technology.

Languages: German, English, French

E-Mail: info@hoefer-pat.de

Dr. Mona Blumenstengel

Patent engineer

  • Born in Sibiu in 1972. Studied physics at Rheinisch-Westfälische Technical University in Aachen.
  • Dr. Blumenstengel has been working in the area of industrial property rights since 2003.

Areas of expertise:

  • General physical engineering
  • Electrical engineering
  • Telecommunications
  • Solar technology
  • Automotive engineering

Scientific experience in the area of high-energy physics.

Fields of expertise:

  • Patents, trademarks and design rights

Languages: German, English, Romanian

info@hoefer-pat.de
Dr. rer. nat., Dipl. Physicist
Dr. rer. nat., Dipl. Physicist

Patent engineer

  • Born in Sibiu in 1972. Studied physics at Rheinisch-Westfälische Technical University in Aachen.
  • Dr. Blumenstengel has been working in the area of industrial property rights since 2003.

Areas of expertise:

  • General physical engineering
  • Electrical engineering
  • Telecommunications
  • Solar technology
  • Automotive engineering

Scientific experience in the area of high-energy physics.

Fields of expertise:

  • Patents, trademarks and design rights

Languages: German, English, Romanian

E-Mail: info@hoefer-pat.de

Tim Ruoff

Patent engineer

  • Born in 1975 in Dortmund. Studied media technology at the Ilmenau University of Technology.
  • He began working in patent law in 2017.

Areas of expertise:

  • Electrical engineering
  • Computer science
  • Automotive engineering
  • Telecommunications
  • Audio-/Video coding processes

Scientific experience in the area of speech recognition. Practical experience in the area of automotive and software technology.

Fields of expertise:

  • Patents, trademarks and design rights

Languages: German, English, French

info@hoefer-pat.de
Dipl. Ing. Media Technology
Dipl. Ing. Media Technology

Patent engineer

  • Born in 1975 in Dortmund. Studied media technology at the Ilmenau University of Technology.
  • He began working in patent law in 2017.

Areas of expertise:

  • Electrical engineering
  • Computer science
  • Automotive engineering
  • Telecommunications
  • Audio-/Video coding processes

Scientific experience in the area of speech recognition. Practical experience in the area of automotive and software technology.

Fields of expertise:

  • Patents, trademarks and design rights

Languages: German, English, French

E-Mail: info@hoefer-pat.de
© 2025 Hoefer & Partner Patentanwälte mbB, München und Stuttgart

* Hoefer & Partner is listed in “Europe’s Leading Patent Law Firms 2019”, published in Financial Times Europe, July 9th, 2019, FT Special Report
* Hoefer & Partner is listed in “Europe’s Leading Patent Law Firms 2020”, published in Financial Times Europe, June 18th, 2020, FT Special Report