3.6 Taking of evidence by an appointed person 

If the law applied by the competent authority obliges the parties to secure evidence and the authority is not able itself to execute the letters rogatory, that authority may, with the consent of the competent department, appoint a suitable person to do so. When seeking the consent of the department concerned, the competent authority must indicate the approximate costs of doing this. If the competent department consents, the European Patent Organisation must reimburse any costs incurred; if not, the Organisation is not liable for these costs.