What I'm wondering about is what happens if someone creates a really cool design, posts it on Shapeways or Thingiverse, and then someone else tries to patent it? Patents costs over $10,000, so most shapeways/thingiverse posters probably wouldn't be patenting their designs. Could someone with a lot of money simply go around and patent things that are being sold on Shapeways, or offered for free on Thingiverse, and then claim it to be their own design, and sell them for a profit, or are there laws that prohibit this?