In its in depth look at Apple's war against Android, Bloomberg notes that a 1994 Fidler/Knight Ridder tablet design raised substantial question regarding the validity of Apple's patent on the iPad's design.
Apple got even more discouraging results on its iPad design. Again peppering her ruling with handy graphic illustrations, Koh showed how the crude-looking 1994 Fidler/Knight Ridder tablet, designed for reading newspapers digitally, created "the same basic visual impression" as Apple's D'889 patent for the iPad. "The Court," she wrote, "therefore finds that Samsung has raised a substantial question regarding the validity of the D'889 patent on obviousness grounds." So, maybe the iPad's design is up for grabs! In any event, Koh declined to enjoin Samsung's Galaxy Tab 10.1.
You can see that tablet design being presented in the video below..