And Barnes & Noble does not. This could have big implications in the rapidly escalating dedicated book reading device skirmish between the two big book sellers. As Engadget reports this means that Barnes & Noble’s Nook which has an electronic ink screen and a smaller LCD screen would appear to be in violation of Amazon’s patent. Meanwhile, Borders launched an e-book store of their own based around a third dedicated reader, the Kobo.

Amazon:

Barnes & Noble:

Borders: