The Protectobots were reissued in 1990/91 in that gold G1 packaging style of the early 90s. But the Defensor giftset itself has never been reissued. Here's what the legit reissue Protectobots look like in packaging:
http://www.actiontoys.com/Merchant2/...OTECTO-SET.jpg

Click here and scroll down, you can see how to tell the difference between a legit G1 and fake Defensor.