itwbennett writes "As Slashdot readers will recall, Barnes & Noble is being particularly noisy about the patents Microsoft is leveraging against the Nook. Now the bookseller has filed a supplemental notice of prior art that contains a 43-page list of examples it believes counters Microsoft's claim that Nook violates five of Microsoft's patents. 'The list of prior art for the five patents that Microsoft claims the Nook infringes is very much a walk down memory lane,' says Brian Proffitt. 'The first group of prior art evidence presented by Barnes & Noble for U.S. Patent No. 5,778,372 alone lists 172 pieces of prior art' and 'made reference to a lot of technology and people from the early days of the public Internet... like Mosaic, the NCSA, and (I kid you not) the Arena web browser. The list was like old home week for the early World Wide Web.'"