Blackout for Blackberry in the US?

All you business-types can feel your thumbs aching everytime someone mentions the name Blackberry. I know it. Well, Candian tech darlings and inventors of the Blackberry, Research in Motion (RIM), may be up against a wall in the US today.

Blackberry's are just a popular (if not more so) in the US with business/government types as they are in Canada. Today a judge will rule on whether RIM has to shut down service in the US related to recent patent rulings. Here's a link to story goodness in several forms.
Judgment Day arrives for RIM - Engadget