Dear Rich: Under which trademark class would a doll used for therapy (psychological) and available for any consumer to buy online, fall? The USPTO categorizes dolls used for therapy purposes in the "Medical Supplies" category, Class 10 -- for example, "role playing dolls for use in psychological testing and therapy." (As you may know, typically a doll as used by a child would fall within the "Games and Sporting Goods" category, Class 28.) Here's more on the USPTO classification system. BTW, the manner in which you sell the doll -- in retail stores or online -- won't make a difference for purposes of determining trademark classification.