hcs
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(Sep 20, 2008 - 5:59 PM)
For what it's worth, the patent specifically mentioned in this article is only the newest in this series of patents.
7,158,118 was filed May 2, 2005 by the same people and also describes "3D pointing devices with orientation compensation and improved usability". It is referenced by the newer patents (which are more likely invalid due to prior art) and is probably the more troublesome one.