One professional raised a question on Any Tips for usage of ISO, Certification Body and Accreditation Body Logos for ISO 9001:2008.
Any organization, implementing ISO 9001:2008 QMS Standard (whether it is certified or not) should not use any other organization's logo without their specific permission. Certification body generally grants permission to the organization, who takes certification from the certification body.
As regards use of ISO name and logo, it is suggested to see the link at ISO Website at http://www.iso.org/iso/name_and_logo.htm. It should be noted that use of ISO logo is restricted to ISO members and technical committees only.
With best wishes,
Keshav Ram Singhal