Pardons, Commutations, & Negligence Per Se

So: How, if at all, will the commutation of Scooter Libby’s prison term affect the civil suit brought against Libby (and others) by Valerie Plame?

I think not at all, since the conviction stands, so, to whatever extent negligence per se applies — and I actually don’t think it will, given the actual charges of which he was convicted — the basis would still be there.  But I do wonder what effect an outright pardon would have.  I assume it’s come up before.  Anyone?

–BC