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Microsoft granted an IM patent

Microsoft has won a patent for an instant messaging feature that notifies users when the person they are communicating with is typing a message.

The patent encompasses a feature that's not only on Microsoft's IM products but also on those of its rivals America Online and Yahoo. The patent was granted on Tuesday.

Patent No. 6,631,412 could serve as a weapon in Microsoft's battle for IM market share. Microsoft is investing heavily in IM as a springboard for selling communication software to businesses. Later this year, Microsoft plans to launch Live Communications Server, a software product that will initially offer IM for the enterprise and then expand into Internet voice calling and video services.

The software giant currently offers MSN Messenger as a free download off the Web, as well as Windows Messenger, the IM client for its XP operating system. Both services have amassed millions of users.

Having a patent can be a powerful tool, but only if it can be proven in a court that its owner has bulletproof claims to the invention, according to legal experts. Companies that challenge a patent have to prove the patent owner was not the first one on record for the invention.

News source: Cnet|news.com

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