Back in January, we alerted you to a patent infringement case brought in the U.S. International Trade Commission by Acacia Research subsidiary Adaptix.  Adaptix accused Ericsson of infringing U.S. Pat. No. 6,870,808, which Adaptix asserted to be essential to the ETSI 4G Long-Term Evolution (LTE) wireless standard.  The ITC later instituted the investigation as…