O(∩_∩)O hahaha ~ Subject, I'm good at this. I'll give the subject a general introduction of patent law.
The reason for the rejection by the Reexamination Board is based on law. The legal basis is Article 33 of the Patent Law:
An applicant may modify his patent application documents, but the modification of the application documents for patents for inventions and utility models shall not exceed the scope recorded in the original specifications and claims, and the modification of the application documents for patents for designs shall not exceed the scope indicated by the original pictures or photographs.
it's a bit awkward to read, and non-professionals may find it a bit confusing. Translated into vernacular, in fact, your applicant should submit a basically complete invention on the application date, instead of tinkering with the original and adding new content after submitting the application first.
why is there such a rule? In fact, this involves a very important date in the patent law: the date of filing. That is, the date when the applicant submitted the contents of the patent application to the Patent Office.
in short, the earlier the date, the better for the applicant. In order to prevent the applicant from applying for an incomplete invention in advance in order to seize the filing date, Article 33 of the Patent Law makes the above provision, aiming at warning the applicant that what you submit on the filing date is all your inventions, and you can't supplement them later. I won't accept the supplements. You'd better complete all your inventions before submitting your application.