Are your USB ports Patented and UL certified? This is a great question and it is a simple answer! YES! BAR-JUICE is 100% patented and has a UL certification that covers the whole system from power supply to every last screw! But you might ask why is this so important when shopping for charging solutions? Liability is a huge responsibility! No one wants a fried phone because someone used cheap parts from China to avoid US labor costs! No one wants a fire in their establishment or to be blamed for that fire because the device they bought wasn’t safe! Never trust a device that can’t prove to you that it has this UL certification! You will end up paying the price!