Read here about Jerome Lemelson, a man who spent his whole life suing for patents, not only that though: he figured out how to scam the patent system so that he could sue for patents he didn't actually have by posting an application years before that was deliberately vague so that when the technology developed he could "amend" his existing patent and sue those who actually developed the invention.
This guy never invented anything: all he ever did was suck from corporations and businesses using the power of lawyers.
Amazing stuff, I would call it legal crime.
It just makes me wonder what other dodgy operations are going on like this today.
Thanks to Fortune Magazine for the article.