definiens: as defined under Rule 17Ad-15 under the Exchange Act ( each, an ) . Signatures on an ADS Letter of Transmittal need not be guaranteed ( a ) if the ADS Letter of Transmittal is signed by theregistered owner(s ) ( which term, for purposes of this section, includes any participant in any of DTC ’s systems whose name appears on asecurity position listing as the owner of the ADSs ) of ADSs tendered therewith and such registered owner has not completed the box entitled or the box entitled on the ADS Letter of Transmittal or ( b ) if such ADSs aretendered for the account of an Eligible Institution . If the ADSs are registered in the name of a person other than the signer of the ADS Letterof Transmittal, or if payment is to be made, or ADRs for ADSs not tendered or not accepted for payment are to be returned, to a person otherthan the registered owner of the ADSs, then the ADRs for the tendered ADSs must be endorsed or accompanied by appropriate stockpowers, in either case signed exactly as the name or names of the registered owner(s ) or holder(s ) appear(s ) on the ADRs, with thesignatures on the ADRs or stock powers guaranteed as described above