Core patent refers to the patent corresponding to the technology that must be used to manufacture a product in a certain technical field, and cannot be circumvented by some circumvention design means.
Basic patent refers to the most original patent granted by the patent office according to the applicant's original application. It is independent and not attached to other patents. Basic patents are also called "main patents" and "leading patents".
Among the two interdependent patents, the first patent protected by patent is the basis of another patent invention, or the latter patent is an improvement on the basis of the first patent protection, while the latter is the subordinate and improved patent of the former, and the former is called the basic patent.