Any valid trademark gets you in the door, then Amazon trusts that you exert your rights only over your brands. For example Anker could have a trademark on "Ank

Any valid trademark gets you in the door, then Amazon trusts that you exert your rights only over your brands. For example Anker could have a trademark on "Anker" (the brand) and then claim the "PowerCore III" listing for their battery pack without having to trademark the name of each product.