Research in Motion said on Monday that mobile e-mail technology firm Visto Corp. has filed a complaint in a U.S. court claiming patent infringement.
RIM said it believes California-based Visto’s patents are invalid and that it does not expect its customers to be impacted by Visto’s complaints.
“RIM believes it does not infringe Visto’s patents and will file its legal response in due course,” the company said in a statement, adding that it will also consider asserting its own patents against Visto.


