"Even more curious than the USPTO's decision to award a patent (7,966,024) this week to Microsoft on something it calls 'virtual skywriting,' was the software giant's decision to provide the USPTO with a well-known, unattributed photo of real skywriting in its patent application as a purported example of its virtual skywriting system 'in use.' In response to an inquiry from GeekWire, Microsoft had this to say: 'The use of the skywriting image in the patent was an error and Microsoft will immediately submit the patent for re-issue proceedings to correct the drawings. Microsoft regrets any confusion caused by this error.'"
You can see a comparison image from GeekWire below:
Of course, now I'm wondering if this patent infringes on someone's copyright, which would make for a really interesting legal discussion.