Co-branding

Co-branding refers to several different marketing arrangements:
Co-branding, also called brand partnership, is when two companies form an alliance to work together, creating marketing synergy. As described in Co-Branding: The Science of Alliance:
Co-branding is an arrangement that associates a single product or service with more than one brand name, or otherwise associates a product with someone other than the principal producer. The typical co-branding agreement involves two or more companies acting in cooperation to associate any of various logos, color schemes, or brand identifiers to a specific product that is contractually designated for this purpose. The object for this is to combine the strength of two brands, in order to increase the premium consumers are willing to pay, make the product or service more resistant to copying by private label manufacturers, or to combine the different perceived properties associated with these brands with a single product.