Question about the founders' 20$ codes

I didn't use mine because none of my friends wanted to commit to a game they coulodn't even see screenshots of, but I absolutely plan to do so as soon as the game releases on Early Access.

Will my five Founders' 20$ coupons still be valid after February 12th? I would be shocked to hear they aren't, but it's worth asking before I go out on a limb gifting it to people and find out they can't use it.