The owner of several of Germany’s most iconic high-end department stores, including the KaDeWe in Berlin, the Oberpollinger in Munich and the Alsterhaus in Hamburg, has filed for bankruptcy. The KaDeWe Group told dpa on Monday that the company’s stores will remain open. The group applied for restructuring under self-administration, a type of bankruptcy filing more typical for companies with good prospects of continuing business operations. The retail company contended that the rents at the three flagship locations were a particular burden on the business and made “sustainable, profitable opera…