According to the R.O.C. Patent Act, which of the following is not a circumstance where an invention patent right shall become extinguished?
AWhere the patent term has expired, and the patent shall become extinguished.
BWhere the patentee has passed away without heirs.
CWhere 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.正確答案
DWhere the patentee abandoned the patent, the patent right shall be extinguished from the date the patentee makes a declaration in writing.
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