Mark Usage

The fastest way to learn whether a product has been certified by UL de México is looking for the corresponding mark in the product itself. ULMX-NOM Marks are only granted when a product complies with applicable NOM requirements, the scheme/modality under which it has been evaluated, and current Mexican legislations related to Conformity Assessment. Certificates of Compliance are UL's property and intended to represent said compliance, being granted to the distributor or manufacturer responsible for the certified product.

ULMX-NOM Marks shall only be used in products that are certified by UL de México under the terms indicated in the Service Agreement and the Mark Usage Manual, which is given to the client when a Product Certification is first obtained.

Upon receiving your Product Certificate of Compliance, you will also receive a Mark Usage Authorization which indicates the applicable UL-MX NOM mark that has to be shown in each product approved by the corresponding Certificate, according to the instructions found in the Mark Usage Manual, which you will receive upon first obtaining your certificate.

UL de México considers the following circumstances a case of mark misuse:

• Marks used in the product itself or in advertisement pieces if:
• the certification or dictum process is still pending.
• the product being certified has gone through changes or modifications on which UL has not issued a position or said changes have not been evaluated or notified.
• the certification or dictum used as the basis of a secondary certification has been cancelled.
• Marks used in product advertisement pieces that only apply to some certified products, thus making consumers believe that all products shown have been certified.
• Marks used in products that have never been certified.
• Marks assigned or transferred to third parties without UL's written consent in advance.
• Marks used in products after the expiration of the respective standard under which a certificate or dictum has been granted or when a standard expires and a current certification approved in writing by UL does not exist.
• When Underwriters Laboratories, Inc. and its branches, subsidiaries, certification marks and/or official marks, reports, certificates, and other documents are misrepresented with the purpose of confusing the public (consumer fraud.)
• Any other severe cases, at UL's discretion, will result in certificate cancellation, as well as Service Agreement termination.

UL de México certification marks are also protected by the Mexican Institute of Industrial Property (IMPI - Instituto Mexicano de la Propiedad Industrial,) according to which the misuse of marks will be considered enough basis for claims on intended disrespect or loss of integrity of UL marks. In such cases, UL will take necessary actions, including legal remedies, and issue statements and warnings to trade magazines and general publications to inform the public.

We appreciate your efforts to correctly apply and use UL de México certification and/or official marks and we thank you for your interest in UL certification programs.