Metasearch Systems LLC alleged Expedia Inc., Hotels.com, L.P., and Hotwire, Inc. for patent infringement

Metasearch Systems LLC. filed a complain on Sept. 21, 2012 alleging Expedia Inc. and its subsidiaries Hotels.com, L.P., and Hotwire, Inc. of infringing its patents. The patents of this litigation are:
US8,171,079 titled “Metasearch engine for ordering items returned in travel related search results using multiple queries on”,
US7,421,468 titled “Metasearching a client's request by sending a plurality of queries to a plurality of servers”,
US7,277,918 titled “Metasearching by sending a plurality of queries to a plurality of servers”,
US8,239,451 titled “Metasearch engine for ordering items returned in travel related search results using multiple queries on”,
US8,073,904 titled “Metasearch engine for ordering items returned in search results using multiple queries on multiple unique”,
US7,490,091 titled “Metasearching a client's request for displaying at least one list comprising at least one advertisement”, US6,789,073 titled “Client-server multitasking”,
all issued to Harvey Lunenfeld. Metasearch Systems is the exclusive licensee of all rights, titles, and interests in these Patents.

None of these patents has any equivelant Japanese nor Chinese patent family members.
The multiple queries and multitasing search function disclosed in the 7 documents are called "Oudann Kennsa" in Japanese, which means "cross-database search" literally.

Suggestion to defending attorneys: searching Japanese prior art focusing on "Oudann Kennsa" in NPL and patent references.

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