ISO will not authorize the use of its logo in connection with material publicizing an ISO 9000 or ISO 14000 certification - some examples of such uses are in company letterheads, marketing leaflets, advertisements, and so on.The ISO logo is a registered trademark. ISO does not authorize its logo to be used, either by quality system or environmental management system certification bodies, or by the companies to which the latter issue ISO 9000 or ISO 14000 certificates.Allowing the ISO logo to be used would give the false impression that ISO carries out certification activities, or has approved or authorized the organization using its logo. These activities are not business functions of ISO.
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