22 Which of the following statements regarding patent exhaustion is correct?
(A) After the sale of a patented product made under consent of the patentee, the patent rights concerning sale and use to that product are exhausted.
(B) The R.O.C. Patent Act does not provide any specific rules regarding patent exhaustion doctrine.
(C) The buyer of the patented product must have purchased the product in the territory of R.O.C. in order for the patent rights to that product to be exhausted.
(D) The patent exhaustion is limited to act of using the product only. It does not extend to the act of reselling the product.