Baidu (Nasdaq: BIDU) recently deleted bid ranking results for Dazhong Banchang Logistics that were from non-Dazhong sources, reports Shanghai Youth Daily. Dazhong Transportation's (600611.SH) relocation subsidiary Dazhong Banchang Logistics sued Baidu for trade name violation on May 9 as many other companies have registered the name "Dazhong Banchang" in Baidu's bid ranking service. Dazhong Banchang also asked Baidu to pay 500,000 Yuan in compensation.