Law Firm


  • 1992 – The patent attorney firm Dipl.-Ing. Kai Kohlmann was founded in Aachen, on Wallstraße
  • In accordance with the structure of Aachen as university town, the firm has been active in a wide range of technical fields from the very beginning
  • 1995 – Cooperation commenced with the patent attorneys Hemmerich, Valentin, Gihske & Kollegen at the Düsseldorf and Siegen offices and the firm’s range of activities expanded to include, among other things, continuous casting and forming technology
  • 1999 – The office of the firm was relocated to larger premises in Aachen-Brand, Donatusstraße