When applying for a patent, if the independent claim is applied for application in a large field, and the dependent claim is applied for application in a small field, then if the novelty in the large field is not established, what will happen? Aren’t they all going to be invalidated?
The validity of patent rights includes both large and small fields. If the novelty in the large field is not enough, as long as the novelty of the subordinate rights in the small field is enough, it will still have a protective effect, and not all invalid. In fact, during the substantive examination, if the examiner discovers similar problems as you mentioned, he may ask you to re-amend your rights, that is, to place the dependent rights into independent rights. I have encountered such problems during the application process. Therefore, my suggestion is that you write the rights items according to your ideas, and if there are similar problems, correct them according to the review comments.
In addition, if I only list the applications in a few small fields as independent rights items, if one day there are applications in other small fields, wouldn't those fields be wasted? ?
As far as I know, it is generally appropriate to have at most two independent rights in a patent. More independent rights will increase the risk of review.