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IBM has filed suit against online travel giant Expedia alleging violation of four patents that harken back to the early days of dial-up internet.
Big Blue has accused Expedia and several of its subsidiary travel sites, including Orbitz, Hotwire, and Hotels.com of infringing four patents related to the operation of browser-based applications and stored conversations.
Patents - Issue - Case
The patents at issue in the case are:
US Patent 5,796,967, described as a "A method for presenting applications in an interactive service" and outlining how the interface of a web-based application can be used to shift processing tasks from a server to a client PC. It was first filed in 1989.
US - Patent - Method - Advertising - Service
US Patent 7,072,849, titled "method for presenting advertising in an interactive service" explains how web services can put ads on client machines. It dates back to 1988.
US Patent 5,961,601, titled "preserving state information in a continuing conversation between a client and server networked via a stateless protocol" describes a way to preserve communications over a web browser via a CGI program. It was filed in 1996.
US - Patent - Method - System - Apparatus
US Patent 7,631,346, described as "a method, system, apparatus, and computer program product are presented to support computing systems of different enterprises that interact within a federated computing environment" describes a way to handle single sign-on with a service provider who then uses the credentials with other services. It was filed in 2005.
While IBM is the original holder of all four patents, the two earlier filings, the '967 and '849 patents, were actually developed for Prodigy, the ISP project Big Blue helped launch in the 1980s.
Part - Development - Prodigy - IBM - Engineers
As part of the development of Prodigy, IBM claims, engineers had to come up with a way...
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