The complainant alleged that Transport Canada improperly withheld under paragraph 20(1)(b) (confidential third-party financial, commercial, scientific or technical information) of the Access to Information Act information related to mediation services provided by the Canadian Institute for Conflict Resolution (CICR). Transport Canada applied paragraph 20(1)(b) to information contained in invoices billed by CICR. In its representations, CICR maintained that the exemption was properly applied. The Information Commissioner agreed that the third party’s hourly rate and the number of hours billed were properly withheld as it would reveal commercial information and CICR has consistently treated this information as confidential. However, the Information Commissioner concluded that the description of services billed, the dates of services, the subtotal of charges, the amount of taxes applied, the “total amount” and the “amount paid” cannot be withheld under paragraph 20(1)(b) as they do not meet the criteria set out in that paragraph.