1) Competing engineers are often advised not to read patents, because it can result in treble damages in infringement claims: https://www.essentialpatentblog.com/2016/06/supreme-court-ru... 2) Patents are really hard to read 3) The difference between something that looks plausibly like it might work when written down and something that actually works can be hundreds of millions of dollars of bugfixing.
I second that. In a previous life, I had to read and understand a few dozens of patents. Imagine page after page of buzzwords, unjustified claims, approximate logic, vague and meaningless sentences, clearly designed to be write-only.
In my experience, reading cutting-edge research papers in domains with which I'm barely familiar is so much easier.