RIM countersues Visto in patent infringement dispute


Stop me if you’ve heard this before — a company sued Research In Motion, the maker of BlackBerry, for patent infringement and now RIM has countersued. This isn’t a bad flashback nightmare, it’s another round with another company. This time it’s Visto, the competing push e-mail provider, that is at the center of the controversy. Visto is claiming that RIM, as well as other companies that they are suing separately, have infringed on four of their patents by providing BlackBerry service. RIM has countersued seeking to invalidate three of the patents. The fourth patent is already under review by the U.S. Patent and Trademark office.

This latest legal spat is a nightmare for RIM investors, who hoped that the company could avoid the courtroom for a while after settling with NTP for $600 million earlier this year. Shares were down 5% on Monday when the Visto action was announced and likely won’t recover completely until this case is resolved.

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