All patches for DP 7 can be found at the site
http://support.openview.hp.com/selfsolve/patches
Click the Product Data Protector, the version 7, and the OS-type
There were never any actual 'patches' released for DP 7, rather, ther ewas a patch bundle for 7.01 and another for 7.03, and a few patrches that get installed on top of 7.03