Law Firm

The law firm IP Kneller in Cologne was founded in 2007 by the lawyer Heidi Kneller-Gronen and has since then specialized in the protection of intellectual property, especially competition law, trademark law and copyright law.

There is a worldwide network of personally known patent attorneys and attorneys-at-law, so that we can also operate internationally. Our arm reaches as far as Japan, Australia, Argentina and many others. The aim of the cooperation is a common fight against product piracy, copyright infringement, trademark piracy etc.

In addition, it is also the owner of the trademarks „Wortfilter“ and


Heidi Kneller-Gronen