The description of the spell permanency reads as follows. (Emphasis mine)
This spell makes the duration of certain other spells permanent. You first cast the desired spell and then follow it with the permanency spell. Depending on the spell, you must be of a minimum caster level and must expend a specific gp value of diamond dust as a material component. You can make the following spells permanent in regard to yourself. You cannot cast these spells on other creatures. This application of permanency can be dispelled only by a caster of higher level than you were when you cast the spell.
The way I interpret this is that permanency can only be dispelled if you cast it on yourself with an applicable spell. However I frequently misinterpret these things and it doesn’t really make sense so I thought I’d ask.
