In reference to the patent: US20060078855
It appears this is attempting to patent the teaching procedure, however I have been doing this doodling these since well-before seeing the application.
In a case like this, the invention doesn't require someone to teach a person to do perform it, as it's straight-forward enough that anyone can figure it out.
How does the United States patent system respond to those circumstances? Furthermore, could I now be sued for infringing based off my own doodles?