Research in Motion rivals Seven Networks Inc. and Microsoft along with business partner Intel recently filed documents in the NTP vs. RIM patent case.

One of the key rulings against Research in Motion is that they infringe upon patents held by Delaware based holding company NTP even though RIM’s email system is managed from their operations center located in Canada. The ruling brings into question whether U.S. patents can be enforced in other countries.

Both Seven Networks and Intel side with Research in Motion arguing that U.S. patents should not apply in other countries. Microsoft argues the opposite stating that RIM’s position would encourage companies to locate certain aspects of their systems outside the United States to avoid infringement liability.

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