go2 Directory Systems owns and operates go2, the leading mobile Yellow Page directory service in the United States, with prominent placement on the wireless web menus of several major wireless carriers, including Cingular, Nextel, Sprint, Verizon, and Boost. The go2 logo and the family of go2 marks are registered trademarks or trademarks of UDS Directory Corp., dba go2 Directory Systems, which also holds several U.S. patents and has various patents pending on providing location-based, yellow page-like information over mobile phones. (U.S. Pat. Nos. 6,202,023 and 6,339,744). go2 Directory Systems is privately held and is headquartered in Irvine, California.