If damage is caused by infringement by a third party, the infringing third party shall be liable for compensation. If the security obligor is at fault, he shall bear the corresponding supplementary liability for compensation within the scope that he can prevent or stop the damage. After assuming the responsibility, the security obligor may claim compensation from a third party. Where the right holder of compensation brings a lawsuit against the security obligor, the third party shall be regarded as a co-defendant, except where the third party is uncertain.