I'd replace "can't" with "shouldn't be able to, but don't count on it". Every week there is a new case involving patents with obvious prior art getting through.

I'd replace "can't" with "shouldn't be able to, but don't count on it". Every week there is a new case involving patents with obvious prior art getting through. As America has switched to a first-to-file system (as of the America Invents Act), you'll also have to prove that you invented it first. This presumably is easier with a website front-end, but possibly less so with back-end technologies.