There is no direct way to find out if a forms patch is applied. This is because forms patches are shell scripts and no history is maintained. DBAs usually create directories inside 806 ORACLE_HOME whose name is same as the patch number. However these may be deleted subsequently to reclaim space.
Metalink Note 781022.1 How To Check To See If A Forms Patch Is Applied?
If you find that it is not applied, then please apply it.
I think, since Oracle is moving to a java based future, they are not going to create the functionality of maintaining the patch history for Forms patches. This will have to be done manually by DBAs. Maybe they can create a forms_patches table with the columns patchno and description. But anything manual always requires discipline.