The owner shall have a grace period for renewal of 6 months, upon payment of the corresponding renewal fees plus a 50% surcharge. Upon failure to apply for and/or to pay the renewal fee(s), neither before expiration of the said period nor within the 6-month grace period (and in this case with the 50% surcharge), the registration of the trademark shall cease to be effective upon expiration of the last 10-year registration period. Restoration of the trademark shall not be possible.