Contact persons

Uwe R. Borchert studied industrial engineering and manufacturing technology at the Technical University of Munich with a focus on materials engineering. The graduate engineer (Univ.) is admitted to practice as a patent attorney before the German and European Patent Offices and as a European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO) and is active in patent and trademark matters in grant and registration proceedings, opposition proceedings, infringement litigation and license agreements. He is furthermore an admitted representative before the Unified Patent Court (UPC).

With his industrial experience in the fields of materials and materials handling technology as well as design and production engineering, Uwe R. Borchert has specialized as a patent attorney in the particular fields of mechanical engineering, in particular materials and materials handling technology, medical device technology, gaming machine construction, telecommunications technology, nanotechnology, software protection, construction machines and their accessories, sports products and vehicle safety engineering.

Markus J. Kaiser studied mechanical engineering with a focus on aerospace technology at the Technical University of Munich. The graduate engineer (Univ.) is admitted to practice as a patent attorney before the German and European Patent Offices and as a European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO) and is active in patent and trademark matters in grant and registration proceedings, opposition proceedings, infringement litigation and license agreements. He is furthermore an admitted representative before the Unified Patent Court (UPC).

Markus J. Kaiser has industrial experience in the fields of vehicle construction, satellite technology, satellite communication, tethered rope systems, aerospace technology and software development. His special expertise as a patent attorney lies in the technical fields of aerospace technology, structural mechanics, telecommunications technology, control systems, air conditioning technology and aerodynamics.

Florian Klettner studied electrical engineering and information technology at the Technical University in Munich with the specializations mechatronics and microsystems technology. The graduate engineer (Univ.)  is admitted to practice as a patent attorney before the German and European Patent Offices and as a European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO) and is active in patent and trademark matters in grant and registration proceedings, opposition proceedings, infringement litigation and license agreements. He is furthermore an admitted representative before the Unified Patent Court (UPC).

He worked in industrial software development and has practical knowledge in the areas of database programming and front-end of database applications. He has experience in the development of microsystems and semiconductors as well as in the corresponding measurement and analysis processes and can demonstrate knowledge in the application of measurement and automation technology. 

Felix Borchert studied electrical engineering and information technology at the Technical University in Munich. His focus in the Master's program was the field of "Bioengineering & Life Science".

The graduate engineer (TUM) is admitted to practice as a patent attorney before the German and European Patent Offices and as a European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO) and is active in patent and trademark matters in grant and registration proceedings, opposition proceedings, infringement litigation and license agreements. He is furthermore an admitted representative before the Unified Patent Court (UPC).

He has worked in plant engineering for mixing and separation systems for biopharmaceutical applications and has practical knowledge in the fields of validation and qualification in plant engineering. He brings experience in the areas of measurement system and sensor technology as well as in product development in the laboratory medical field.

Hartmut Hering studied general mechanical engineering at the university in Stuttgart specializing in electrics, electronics, numerical and program-controlled machines, in particular machine tools, process controls, automotive engineering, power engineering, reactor theory and engineering as well as general installation construction.

As an engineering graduate (Univ.) he is licensed as a patent attorney at the German and European Patent Office and as a European Trademark and Design Attorney at the European Union Intellectual Property Office and works in patents, utility models, trademarks and designs, opposition proceedings, cancellation proceedings, annulment proceedings, infringement proceedings and the like in general and civil-law matters of the German legal protection of industrial property rights before the DPMA and the Federal Patent Court and the ordinary courts. 

After working for many years as an assistant in the field of “computer-assisted controls of machine tools” and as an independent patent attorney for many years, he has particular specialist knowledge in the fields of lubricants, general filter technology and material preparation, semiconductor technology, clamping technology and computer-assisted production plants as well as conveying technology, forming processes and mixing and agitating technology.

Dr. Peter Willsau studied physics with a focus on solid-state and nuclear physics at the University of Bonn. Following his academic work as a graduate physicist at international research institutes and his doctoral degree (Dr. rer. nat.), he gained practical experience as a developer in an industrial company.

Peter Willsau then specialized in the field of intellectual property law and collaborated with several patent law firms. In 2000, together with patent attorney Dirk Schumacher, he founded the firm Schumacher & Willsau, where he served as managing partner and practiced internationally in all areas of intellectual property law until 2025.

As a German Patent Attorney, European Patent Attorney, and European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO), Peter Willsau advises and represents clients in all matters relating to intellectual property rights (patents, trademarks, designs, utility models) — including prosecution, opposition proceedings, nullity actions, and appeal proceedings, as well as infringement litigation and licensing. He is also a registered representative before the Unified Patent Court (UPC).

In 2026, the firm Schumacher & Willsau will merge with patcare Patentanwälte, where Peter Willsau will continue his practice as a patent attorney.

Dr. Andrea Pautsch studied chemistry at the Technical University of Clausthal. She completed her studies with a doctorate in engineering, whereby she wrote her dissertation at the Institute for Petroleum and Natural Gas Research Clausthal.

As a registered patent attorney at the German Patent and Trademark Office and as a European Trademark and Design Attorney before the European Union Intellectual Property Office (EUIPO) Dr. Andrea Pautsch is active in patent, trademark and design matters, in particular in grant and registration proceedings as well as in infringement matters.

Through her activities in the petroleum, cosmetics and pharmaceutical industries as well as through her work as a registered patent attorney, Dr. Andrea Pautsch has experience in the field of industrial chemistry, in particular in the fields of polymers, coatings, adhesives, sealants, elastomers and composite materials, as well as in the fields of chemical technology, pharmaceutical and cosmetic chemistry.