As someone who was awarded several patents, these things were not made to be a source of infinite money forever!
Up there with our copyright law it’s a system that has been horribly abused to the benefit of super powerful corporations that run everything.
That’s really cool! My invention was a means of accelerated processing for images that makes it cheaper to produce what used to be dedicated color processing chips for digital cameras. While these are no longer used today, it did find some applications. At this point there’s a few libraries out there implementing some of it as open source with my explicit permission in the hopes they might find some use in the future and contribute to society that way.