This case has been featured on several Mexican newspapers and magazines, but most of them focus on the novelty the beer represents, rather than the legal implications of it. The "Duff" trademark was not registered in Mexico before Contreras registered it; however, Mexican intellectual property law recognizes the concept of "brand notoriety", which states that if any brand is well known by a specific section of the consumers or the industry due to the commercial activities or advertisement done by its owners, they have the right to claim the ownership of the trademark.