In the US: As I understand it, provisional applications (PPA) are not examined. If this is correct, then are filing dates ever denied? If yes, under what circumstances?
As I understand it PPA claims are not required. Can including PPA claims backfire. For example, If the scope of the PPA claims is smaller than the NPA (non provisional application), Is the entire NPA claims denied? Any examples or citations are always appreciated.
Any pitfalls to avoid are always appreciated.