Uniqlo is suing the Chinese online retailer Shein over the sale of items it claims copy its popular banana-shaped it-bag, the “round mini”. The petition demands Shein immediately stop the sale of “the imitation products” and compensation for damages incurred as a result of their sale. It was filed last month in the Tokyo district court against the fast-growing business’s parent groups Roadget and Fashion Choice, as well as Shein Japan. Uniqlo said it had filed the complaint “because it has determined that the form of the imitation products sold…