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USPTO denies Microsoft’s request to cancel i4i patent

Eileen McDermott, New York

The UPSTO has upheld i4i’s patent relating to Extensible Mark Up Language (XML) technology, which Microsoft was found to have infringed last year

All claims of Canadian technology provider i4i's US patent number 5,787,449 were found valid last week, after being put through a reexamination proceeding by Microsoft.

"We are disappointed, but there still remain important matters of patent law at...

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