[deno]

Why is the secrecy required if the patent is going to end up public anyway? If you could pre-publish to the public (with a verifiable timestamp) then anyone could submit a challenge and the patent would be only be granted if it’s actually novel and remains unchallenged for some time. IDK I must be missing something because this seems too obvious a solution...

[btrettel]

Not all US patent applications will be published. The applicant can pay extra to keep it secret unless it is granted.

As for why the applications aren't published as soon as possible, I'm not sure. I suspect people might want some time before publication to test the market. If there is no market demand, I know that some law firms will abandon the application. But if it's worthless, then why not publish it?