A tiny company called Lexington Luminance is suing both Amazon and Google over a patent it claims is violated by the LEDs used in the companies' tablets.

Boston University this week filed its own LED patent lawsuit against Amazon over the LEDs used in its Kindle tablets.

Yesterday, Formosa Epitaxy, the company that makes the LEDs that Google uses in its Nexus 7 tablets, filed a lawsuit against Lexington Luminance to try to forestall an anticipated Lexington Luminance lawsuit against it.