Thousands of patents are filed and published every year. More than 80% of this information is never used commercially, disappears in a filing cabinet and is forgotten.
The ideas and technical details of these documents are not used and are rarely published elsewhere, e.g. in a journal.
However, often an ingenuous idea and a lot of effort and time spent by the Inventor originally lead to the patent application.
You can improve your existing products thanks to good ideas, which others have never used.
Then again, you can setup your innovation strategy in a manner, that you push your development into areas where there is no existing competition.
Stay at least one step ahead of your competitors.