About the law firm


Since 1930

The law firm is based on the previous law firm Zumstein Klingseisen Patent Attorneys with the original law firm having been founded in Munich in the 1930’s.

We are a long-established, renowned patent law firm with decades of experience in the area of patents, trademarks and designs, located in the heart of Munich Old Town. The current partners of the firm are the patent attorneys Franz Klingseisen, Rolf Rings and Jürgen Nordmann. The managing partner is patent attorney Rolf Rings.

Our clients are mostly national and international small and medium-sized businesses and large scale industry, above all in the areas of mechanical engineering, sporting goods, building technology and electrical engineering. Many long-term clients come from the Asian region, in particular Japan.

The law firm KLINGSEISEN RINGS will advise and represent you in all aspects of industrial property protection, like patents, trademarks and the protection of designs and in the application procedure, examination procedure and in case of oppositions before the patent offices GPTO, EPO, EUIPO and WIPO. We will also advise you in IP-related legal disputes (nullity proceedings, cancellation proceedings, infringement proceedings) and prepare expert opinions for you (expert opinions on patents as to validity or infringement, expert opinions on trademarks, expert opinions on designs) or searches (patent searches, trademark searches and design searches).

Our law firm is located in the centre of Munich Old Town directly opposite the Hofbräuhaus and close to the German Patent and Trademark Office (GPTO) and the European Patent Office (EPO).

Long experience

You will benefit from the many years of professional experience and expertise of each of the partners of our law firm and the personal, direct processing of your cases or legal questions. Short lines of communication are guaranteed with us as a medium-sized patent law firm.

Transparent costs

Our law firm provides you upon request with individual cost estimates with a transparent overview of costs (attorney fees, official fees). Clear information about costs is important to us in working with our clients. For new clients we offer a first consultation free of cost.

High success rate

In examination procedures for patents and trademarks and in legal dispute proceedings like oppositions to patents, appeals, nullity proceedings (Federal Patent Court), we can refer to a considerable success rate of our law firm in the past.


We are traditionally very internationally oriented due to our many Asian clients, and in the area of trademarks and patents we also offer worldwide consultation and representation together with our network of foreign associates. A processing of cases in all three official languages of the European Patent Office (EPO), German, English and French, is possible with us upon request. Our team of employees is competent in this regard and also includes both an English and a Japanese native speaker.