Disclosing Patentable Ideas

Once an idea has entered the public domain for the first time, if I understand it correctly, it can no longer be patented. This means that anyone could use the idea, should they so wish. It would then be down to who might seek to try it out and get it operational. It would probably reduce the commercial value of such an idea, such that people would prefer to stick with something over which they held patents, even if the idea was better. People could extend that idea but the published material, even be it in a blog, would comprise prior art. Not sure how the various patent offices might search for blog content as prior art. I don’t know if their searches go that far, I know they do journals etc.

Might be interesting as a pipe-cleaner…blogs are not permanent records….