This is an exceptionally confusing mess of a lawsuit because SCO cannot seem to make up their minds of what it is about. Contract issues with IBM, patent infringement, Copyright and so on and so on. But it basically boils down to the fact that SCO Group have been a failing company for years now, so the canopy group brings in McBride to create an exit strategy for the shareholders.
His strategy was to sue IBM so they would buy out SCO. It hasn't happened so they moved ahead with a campaign of FUD against the linux community as a whole, coming up with a campaign of extortion, while at the same time dumping his stock at inflated prices.
Now Big Blue have opened up their patents portfolio and taken a look at what SCO have been violating for years and have countersued. Given that IBM once battled with the US goverment to a standstill, I'm going to sit back and watch the slaughter
One of the best resources for this is the following WiKi:
http://sco.iwethey.org/
Regards,
Ben