Summary:

Another patent quagmire: Teknowledge charges that online alert services offered by Microsoft, Yahoo and AOL, as well as caching services off…

Another patent quagmire: Teknowledge charges that online alert services offered by Microsoft, Yahoo and AOL, as well as caching services offered by Akamai, C&W and Inktomi, infringe on its U.S. patent 6,029,175, which was awarded to Teknowledge in February 2002 and covers “automatic retrieval of changed files by a network software agent.”

MSFT has counter-sued, accusing Teknowledge of violating two of its own patents, one related to electronic bill payment and the other to information aggregation.

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