* AU Optronics sues Samsung over flat-screen patents
* Lawsuit follows Samsung complaint against AU
(Adds Samsung comment in paragraph five, Best Buy declining to
WILMINGTON, Del., June 28 AU Optronics Corp
(2409.TW) of Taiwan hit Korea's Samsung Electronics Co Ltd
(005930.KS) with a countersuit for patent infringement,
ratcheting up their dispute over flat panel technology.
AU Optronics also sued AT&T (T.N), Best Buy Co Inc (BBY.N)
and BrandsMart U.S.A. Inc, accusing them of selling or
distributing infringing technology used in televisions,
monitors, laptops, mobile phones and tablet computers.
The lawsuit, filed on Monday in Delaware District Court,
seeks an order to stop the alleged infringement as well as
monetary damages. AU Optronics, the world's No 4 maker of flat
screens, asked the court to treble any monetary award because
the infringement was willful.
Earlier this month, Samsung filed a complaint against AU
Optronics with the International Trade Commission and in
federal court for patent infringement related to flat screens.
"Samsung Electronics is committed to respecting the
intellectual property rights of others," the Korean company
said in a statement. "However, we will also work actively to
protect our rights and our customers when another party makes
unsubstantiated infringement claims against Samsung."
Samsung vies for the top flat-screen position with Korean
rival LG Display Co Ltd (034220.KS).
AT&T spokesman Mark Siegel said the company had not
reviewed the lawsuit and declined to comment. Best Buy declined
to comment and BrandsMart did not reply to a request for
The case is AU Optronics Corp v Samsung Electronics Co Ltd,
U.S. District Court, District of Delaware, No. 11-568.
(Reporting by Tom Hals; editing by John Wallace and Robert