They held the rights, but the same thing happened with the Jaguars and Clan Mongoose. The Jaguars didn't want the legacies, but other Clans eventually claimed some (if not all). So it's possible the Adders don't use them, but someone else does.
Though, if I were the Adders, I would likely NOT allow the Schmitt Bloodname to fall into other hands. Remember that
the Clans believe in symbols. And nothing would be a bigger symbol then keeping the Clan Founder's Legacy exclusive,
though, with all those genetic legacies, they might use the Schmitt themselves, just because of how symbolic it would
be to have that Bloodname in their Clan. It would be a reminder to ALL the Clans what happens to those who oppose
them.