Apple, Inc. was hit with a patent infringement lawsuit Thursday (read it below) alleging that the company’s iPad 3 tablets and Macbook Pro computers violate four light emitting diode (LED) patents. The case was filed in in federal court in Delaware by claimed patent holder LED Tech Development LLC, a Delaware limited liability company based in Tyler, Texas, the city that is a patent litigator’s combat zone.
Each of the four infringement claims, the complaint charges, involve Apple “products utilizing pulse-width modulation signals to drive light-emitting diodes.” Apple’s newest iPad a/k/a the ‘iPad 3,’ and Macbook Pro are named specifically.
The four patents at issue include:
- No. 6,095,661: Method and apparatus for an L.E.D. flashlight
- No. 7,393,119: Method and apparatus for constant light output pulsed L.E.D. illumination
- No. 6,808,287: Method and apparatus for a pulsed L.E.D. illumination source
- No. 6,488,390: Color-adjusted camera light and method
LED Tech Development filed three similar patent lawsuits just eight days earlier against the maker of MagLite flashlights, Home Depot, and Coleman.
You can read the new patent infringement lawsuit below, and track the case docket here.