Ingo Ludwig

Dipl.-Phys.Ing, European Patent Attorney

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Ingo Ludwig studied technical physics at the University of Essen, focusing on vacuum and thin film technology. Subsequently he was active in the field of research and development in international and medium-sized enterprises. His range of tasks included optical storage media, discharge lamps and special machine construction among others.

Since 2007, Mr. Ludwig has worked in the field of intellectual property rights. He is in charge of patent granting procedures before the German and the European Patent Office as well as before the Patent Offices of Japan, China, Russia and the USA among others, starting with inventor counseling through grant of the patent. Inventions in the fields of tempering systems and connectors for automotive applications, slinging, lashing and lifting means as well as sports and office equipment are the technological focus of his work.

Mr. Ludwig joined Gulde & Partner in the year 2012.

Practice areas

  • National und international Patent Law

Technology areas

  • Mechanical Engineering
  • Automotive
  • Vacuum and Thin Film Technology


German, English

Dr. Matthias Wahn

Dipl.-Phys., Patentassessor

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Matthias Wahn studied physics at the Technical University of Berlin and the University of Strathclyde, Glasgow, Scotland. He obtained his Ph.D. at the Fritz Haber Institute, Berlin, and the Max Planck Institute for Iron Research, Düsseldorf, in the field of solid state physics. As a postdoctoral fellow at an international chemical company in Germany, he was engaged in the development of organic semi-conductor materials.

Matthias Wahn has been working in the field of Intellectual Property since 2011. In 2018, Matthias Wahn joined the firm of Gulde & Partner.

Practice Areas

  • National and International Patent Law 
  • Patent Application Proceedings 
  • Patent Analyses

Technology Areas

  • Physics
  • Semiconductor Technology, Optics
  • Mechanics, Mechanical engineering and equipment manufacturing
  • Consumer products


German, English

Carsten Niepelt

Dipl.-Ing., LL.M., German Patent Attorney, European Trademark and Design Attorney

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Carsten Niepelt studied electrical engineering at the University of Dortmund with a focus on robotics and data processing. Since 1996, Mr. Niepelt has been working in intellectual property law in law firms and industry. In 2008 he completed his Master of Intellectual Property Law and Management at CEIPI.

Since 2018 Mr. Niepelt works for Gulde & Partner.

Practice areas

  • Patent application proceedings
  • Patent litigation

Technology areas

  • Electrical engineering
  • Telecommunications
  • Digital image and signal processing
  • Robotics

German, English

Karl Bühler

Dipl.-Ing. (FH), European Patent Attorney

Karl Bühler studied precision engineering at the Munich University of Applied Sciences and electrical engineering at the Technical University of Munich. As part of his diploma thesis he acquired extensive knowledge in the range of hybrid integrated circuits.

Subsequent to his studies, Mr. Bühler worked for ten years as a development engineer and group leader in the field of inkjet printing for Siemens AG, München/Berlin and for Inkjet Systems, München/Berlin, an affiliated company of Kodak, Rochester, USA.

In 1995 Mr. Bühler took over management of the legal department as Patent & Legal Coordinator in a Swiss company in the field of printing solutions. During ten years in this position, and in charge of all associated companies in Europe, the U.S. and Asia, he acquired comprehensive knowledge in the range of intellectual property with particular emphasis on strategic patent management, including the acquisition, enforcement and defense of national and international IP rights.

From there he moved on to counselling international clients on IP matters with a focus on intellectual property landscape analyses, including patent licensing, research and development agreements, patentability, freedom to operate, and validity of IP rights.

Mr. Bühler was admitted as representative before the European Patent Office in 2017.

Karl Bühler joined Gulde & Partner in 2018.

Practice areas

  • European and international patent law
  • Patent applications
  • Patent examination proceedings

 Technology areas

  • Precision engineering / mechatronics
  • Mechanical & apparatus engineering
  • Digital imaging technology (inkjet, thermal & laser printing)
  • Electrical controls & electronics
  • Hydraulics
  • Medical technology
  • Process technology
  • Automotive systems

German, English, French, Italian, Spanish