The application was filed in 2006.
Having said that yeah this is pretty disappointing behavior but I wouldn't be surprised if it's simply part of the company doing things others don't know about; maybe if enough attention is drawn to it it'll be dropped? Yeah that's probably unlikely but so many of their groups are full of awesome people and it sucks when a company does something stupid to tarnish its image.
If they were actually trying to profit from Microsoft's design, they wouldn't be providing a "Microsoft Word Mode" they would just make that their only interface. The idea is that they would be trying to avoid innovating themselves and would just be attempting to use Microsoft's interface design research to make a quick buck.
You see how this is not about trying to cut corners in designing an interface, and more about user familiarity?
(I'm being charitable here in assuming for the sake of argument that design is a legitimate thing to patent. I don't think that's the case)
[lets not get into how wrong they are, they exist that is all]
I have no wider proof, but of non-technical people I know who use Windows they pretty much all fall into this category.