Generic drug patent challenge is the core content of the drug patent linkage system and the main institutional motivation triggering disputes over patent ownership during the drug registration and approval stage.Currently,there is a controversy over the definition of th...MORE Generic drug patent challenge is the core content of the drug patent linkage system and the main institutional motivation triggering disputes over patent ownership during the drug registration and approval stage.Currently,there is a controversy over the definition of the legal attributes of patent challenge,with the two ...