Among a web of back-and-forth claims, MGA's “L.O.L. Surprise! O.M.G.” dolls were held to have a name and style similar to that of the all-female band, including seemingly lookalike clothing.

A popular sub-brand of fashion dolls that has made billions of dollars has been infringing on the trademark style of the T.I. and Tiny Harris-owned pop group OMG Girlz, a federal jury ruled ...