It is not an infringement but the S-View Cover SAMSUNG Coqiue of origin. I use it for over two months and has not moved, it remains always closed when it is laying flat and perfectly protects the screen without increasing significantly the thickness of the device. It is even possible to operate the volume control button through the "hinge" that is flexible enough for that. We also bought the same on AMAZON purple for my wife S4 which, oddly, in August worth almost 10 euros more, although exactly the same, except for the color!