Less than two months after the resolution of its patent dispute with NTP, Research in Motion Inc. is facing a new threat from U.S. mobility company Visto Corp. Brian Bogosian, Visto chairman, president and CEO, said during a conference call Monday that his company is charging RIM with infringement of four separate patents. The technology under dispute affects mobile “workspace elements” that are found in corporate networks. “They can relate to things like e-mail, calendar and contacts,” said Bogosian. “It could extend to anything that a person may want from remote location to be synchronized to a remote device.”

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