LED Tech Development LLC has sued Apple for patent infringement in the United States Delaware District. In the patent infringement lawsuit, the company claim Apple's iPad 3 and MacBook Pro infringe upon four granted patents. No judge has been assigned to this case as of yet.
 
Charles Lemaire, one of the original inventors noted on all four patents in this lawsuit has also been credited with patents for Lockheed Martin, Nuance Communications and other major companies.
  
LED Tech, whose place of business is Tyler Texas, has filed a formal complaint with the court in Delaware against Apple for patent infringement involving four of their patents that they describe as being "patents by assignment." The patents involved in the case include 6,095,661, 7,393,119, 6,808,287 and 6,488,390.
 
The company is claiming Apple's products utilizing pulse-width modulation signals to drive LED, include the iPad 3 tablet device and MacBook Pro notebook. According to LED, the facts learned in the discovery process show that the infringement of LED Tech's patents is or has been willful.