By deliberately publishing your invention, you create a new state of the art, so that no one is able to patent this particular invention any more.
This may be advantageous if a patent or utility model application and their later enforcement are considered to be too time-consuming and tedious, and keeping the invention secret cannot be ensured in the long run.
In order for a defensive publication to be effective, the particular invention must be described in sufficient detail, and it must be ensured that the content has not been changed subsequently. The claimed date of the defensive publication must be free of any reasonable doubts.
We would be pleased to advise you in selecting the suitable medium for the targeted publication of your invention!