Consumer surveys on usage patterns and attitudes, data from consumer's purchasing patterns, the views expressed by retailers and more generally, market research studies submitted by the parties and their competitors are taken into account to establish whether an economically significant proportion of consumers consider two products as substitutable, also taking into account the importance of brands for the products in question.
Potrošniške raziskave o vzorcih in odnosu uporabe, podatki o potrošniških navadah potrošnikov, stališča trgovcev na drobno in, bolj splošno, študije raziskav trga, ki so jih predložila udeležena podjetja in njihovi konkurenti se upoštevajo pri ugotavljanju ali ekonomsko pomemben delež potrošnikov meni, da sta dva proizvoda nadomestljiva, ob hkratnem upoštevanju pomena blagovnih znamk zadevnih proizvodov.