The common fallacy that
may be the impetus of your question is that patents are easy to get. They’re
not—I’ve seen inventors spend a decade and hundreds of thousands of dollars
getting one. So to invalidate someone’s life’s work will take you more than a
casual search on Google. :)
What you see in the
other answers is that it’s generally very difficult to invalidate a patent, and
often very expensive, precisely because you basically have to re-do everything
they spent years and lots of money doing to get the patent (which is very
difficult) and then find a critical error or fraud in that process. And odds
are, they’re geniuses, which is why they got the patent. They are probably
students who have based their theses on them, large companies who are their
customers and would lose umpteen millions if it were overturned, famous
professors who have co-authored papers with them—not to mention a growing list
of lawyers who have spent a decade learning the technologies well enough to
help them get the patent.
The public relations
arms of the serial infringers will tell you that patents are often sketchy and
all you need to do if an inventor asks you to get a license to use his invention is to threaten to ‘turn him in’ for
asking, threaten to ‘invalidate his patent.’ No, as others have said, patents
are presumed valid because they normally are. All those questions of
obviousness and stuff already have a very long paper-trail. And the question
the original patent examiner researches isn’t whether it’s obvious to
normal people, it’s whether it’s obvious to other geniuses, those ‘skilled in
the art’ as it were.
It’s not that it doesn’t
happen. It’s that it’s a difficult long expensive uphill battle, and it’s that
the media, when they say otherwise, are mostly reporting paid PR pieces from
large and beloved corporate defendants.
As with all questions of
fact, you academically must kill your darlings to find the truth.
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