A law suit started in the Eastern District of Texas, Marshall division, alleging a number of big vendors breached patents relating to LCD displays.
Those are 5,444,457 – DC integrating display driver employing pixel status memories; 5,627,558 – DC interating [sic] display driver employing pixel status memories; and 5,831,588 – DC integrating display driver employing pixel status memories.
Positive Technologies claims it developed several methods in the field of adaptive displays used in LCD display fields “which enabled LCD displays to exhibit the response times necessary to be commercially viable for use as modern display panel technology in a variety of different products sold to consumers”.
Inventor Robert Hotto has come up with a number of ideas licensed by companies including AT&T, Apple and Toshiba, the claim said. He claims credit for the liquid crystal printer. DARPA gave him a grant of $650,000 to develop and commercialise drive controllers using his invention, but a number of companies have declined to license the patents above.
The filing states: “To date, multiple third parties have licensed Positive Technologies’ display drive control IP.” Those include LG Electronics, Samsung, Toshiba, Sharp, Vizio, Hitachi, Mitsubishi, Panasonic, Philips, Pioneer, Benq and NEC.
The defendants named in the action are alleged to infringe one or more claims of the patents-in-suit.
Therefore, Positive Technologies wants the companies to pay damages, including treble damages, for infringing the patents it owns.