That all depends on who is doing the considering. Some people don't even consider late 60's LP's to be vintage. I have a 1970 Deluxe and it was over 30 years old before I heard anyone refer to it as a vintage guitar, and that was only after the Deluxe was reissued a few years ago. The '50's LP's on the other hand were called vintage when they were only 11 or 12 years old, after they were reissued in the late sixties. There are no rules governing the vintage moniker.
In a literal sense, however, you have a Gibson Les Paul of 1982 vintage (year of production).