I would like to know more. My experience with university license teams has been that they rarely sell patents to anyone -- for the most part, they provide a lic

I would like to know more. My experience with university license teams has been that they rarely sell patents to anyone -- for the most part, they provide a license. In the deals I've been involved with, the license specifically requires that the licensee be practicing the patent within some period, or the license is canceled. I'm curious if these represent cases where the universities sold patents to practicing entities, and then they got shuffled over to trolls in liquidation sales or re-orgs?