Patent trolls!
Can't stand these types of companies! Good to hear that they may be backing down.
But they aren't really backing down at all. Sure it's great that the money is going to charity but if they were paid they were paid. Or in this case, if the previous owners were paid.
There needs to be a way to deal when someone claims they exhausted patent rights in behalf if a party being sued. Like a freeze on all pending cases while that claim is verified. If the patent holder filed a false claim they then have to pay any legal costs from the parties they filed against, if it turns out that party number two was wrong they have to pay the legal costs of the holder proving the matter and so on