Law-Forums.org

[kendon19]

When the Patent is approved and registered, all the patents infos and ideas are published in the paper ? or there is any aspects of the idea is hidden ?

[geol19]

The patent is supposed to contain enough information to allow someone "skilled in the art" to make the invention, so clearly if there is some vital piece of information missing then it would be impossible for anyone to make it work, so the patent would not protect your invention in its finished and working form.
Actually it is unlikely that you would get a patent granted in the first place; the examiner would reject it on the grounds that you don't fully explain how to get from A to C (because you have left out step B).
Even worse, if you did happen to get the patent and someone worked out what step B was, they could file a patent for a "new improved version", and deny you the rights to make and sell it!

Having said all that, there may be some aspects of the invention that you can keep out of the patent. Examples would be a specific electronic circuit or a way of making a particular component. You can keep those as trade secrets (a circuit can be protected by encapsulating it or integrating it on a chip).
Also if you have a patent for an invention and you invent an extra feature that makes it even better, then you don't necessarily need to protect the extra feature with a patent, as long as it doesn't change the basic design too much. Since you own the rights to the original invention you also own the rights to it with the new feature.

But remember, a patent doesn't stop anyone copying your invention. It just gives you the right to take legal action if they do.

[sampson]

The entire purpose of a patent is to encourage people to be public with their inventions by granting them legal assurances to protect their interests. Full public disclosure is supposed to be a requirement for a patent.