Lots of folks have been following this case for a couple years. The main interest here is that involves a Chinese IPR holder suing a U.S. company for patent infringement. Not common at all.
Looks like Netac must have had something going on – PNY settled with them. Check out the Xinhua article for more details, including this excellent concluding sentence, a quote from Deng Guoshun, Netac's President:
PNY technologies won't be the last company that we sue.