[cryptica]

I don't know any but it should be possible in theory.

It's difficult to imagine how someone would go about suing a DAO. Who would they sue? There is no legal entity to represent a DAO, all the rules of the business are defined in the code, the participants are all in different countries and they're not necessarily owners of the DAO (the DAO is autonomous; it owns itself), DAO members don't even have any legal agreements with each other and they might even be anonymous.