Our main fields of activity
Patent Prosecution
Excellent inventions need strong protection. We will assist you.
Patent Litigation
We represent you as plaintiff or defendant in all stages of infringement and nullity proceedings.
Opposition
We perform the attack on interfering intellectual property rights of your competitors.
Trademarks
From a national application to a Global Player. We support your trademarks on their way to success.
Other Protective Rights
We also advise you with regard to further options for protecting your intellectual property.
+49 89 21 23 99 0
Please contact us. We will gladly provide personal advice.
We are a professional partnership of patent attorneys and provide services in all fields of intellectual property.
The firm was originally founded in 1934 by Dr. van der Werth in Hamburg. Already decades ago, the Munich office was established by Dr. Franz Lederer. In 2012 Dr. Lederer retired.
All partners are qualified German or Italian Patent Attorneys and European Patent Attorneys. The German Patent Attorneys of Lederer & Keller are further authorized to act before the European Union Intellectual Property Office.