Cree Inc., a maker of energy-efficient lighting, has filed patent
infringement lawsuits against two competitors.
Cree said Tuesday
it sued Harvatek Corp. and Kingbright Corp. in U.S. District Court
for the Western District of Wisconsin.
In a statement,
North Carolina-based Cree says the patents protect Cree's LED
component portfolio, including Cree's white light LEDs.
light-emitting diodes, are semiconductor devices that produce
visible light when an electrical current is passed through them.
Journal Sentinel (http://bit.ly/1qKWwAZ) reports neither Harvatek
nor Kingbright could be reached immediately for comment.
Cree said it has
filed the lawsuit in Wisconsin because that's where a large
portion of its LED business segment is located.
Cree has a
significant presence in Wisconsin in part because of Cree's 2001
acquisition of Sturtevant-based Ruud Lighting.