Reporting counterfeits

Sigma takes allegations of counterfeit and infringing products seriously and encourages others to report suspicious activities.

If you would like to report counterfeits or other infringing products, please email In order to investigate these matters to fullest extent, please include the following in your email:

  • Name of the seller or website where the products are being offered
  • If the products are at a physical store, please include the store’s name and address
  • The products and quantities being offered
  • Information about the trademark in question
  • If you believe that you received unauthentic products, please email, including a picture of the product received along with the above information within the email
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