DDR Holdings, LLC v. Hotels.com, L.P.

DDR Holdings (plaintiff) patented a system generating hybrid webpages combining a host website's branding with a third-party merchant's product information, preventing users from being redirected away when clicking merchant advertisements; National Leisure Group (defendant) was found by a jury to infringe, and it appealed, arguing the patent covered only an unpatentable abstract idea and that one claim was anticipated by a prior system (Digital River's SSS) that similarly generated composite pages but arguably lacked DDR's specific "look and feel" limitation.