Here are some possible scenarios that would keep someone still invested in this stock:

1) Maybe someone has already lost 80% and feels there is not much of a difference to lose the last 20% (feels pot committed like in poker)

2) That same person who lost 80% feels the stock can only go up now based on the validity of the 336 and all the potential infringers.

3) someone feels at some point we will have a BOD that truly cares about shareholder value and has some business sense to know how to take the revenues we get from license fees to turn it into a perpetual money making machine.

4) someone bought this stock through as a tax free investment for retirement and can't touch the money without paying a penalty