24 According to the R.O.C. Patent Act, which of the following is not a circumstance where an inventionpatent right shall become extinguished?
(A) Where the patent term has expired, and the patent shall become extinguished.
(B) Where the patentee has passed away without heirs.
(C) Where a patent application for invention that is approved, the patent certificate fee and the first- year patent annuity are not paid by the applicant within three months after the date on which the approval decision is served.
(D) Where the patentee abandoned the patent, the patent right shall be extinguished from the date the patentee makes a declaration in writing.