I was surprised to find a lack of any threads on this. My question: if you leave an area of invisibility purge, do you become invisible again, or is the invisibility effect removed entirely? Invisibility Purge uses the word "negate," which I could see being interpreted as either dispel or suppress, though I suppose the last line suggests it only suppresses invisibility.
You surround yourself with a sphere of power with a radius of 5 feet per caster level that negates all forms of invisibility.
Anything invisible becomes visible while in the area.
You are correct. The last line definitely indicates that it only suppresses invisibility.
Definitely a suppression effect, would be my call. The key word here is "while"