Or it's used as a means of extortion.Yes, extortion.
Amazon got sued not because they copied anything but because the patent troll hoped that Amazon would just give in (that probably would have been the cheaper option). The patent troll did not invent any products nor did they think up an original idea. All they did was file the paperwork as well as buy patents form other companies.
This is the same group of trolls that have sued Apple and a bunch of other gadget makers, as well as other tech companies. Do the patents cover anything innovative? No. They're all obvious. One covers the basic idea using a touch screen on a tablet, for example.
But never mind the trolls; surely patents have some value to an innovator? I would say no.
It's been a long time since a patent had any more to do with creating a product than the support docs. Both a patent and support docs are paperwork, and they are both secondary and sometimes extraneous. You can pass on them and still get the product out.
For example, I know someone who, while working for Microsoft 8 years ago, filed for a patent that covers the idea of buying an ebook on a website (and it covers most ecommerce sites, for that matter). Microsoft were awarded the patent this year (seriously). In the intervening decade everyone and their brother came up with the same idea and implemented it, and that should show you the real value of the patent.
The reality about patents is that the system is broken. It is all too easy for someone to define a basic concept and then file for a patent. Often times the idea is so basic that the patent holder wasn't the only one to come up with it. Take the Microsoft patent I mention above, for example. Is the idea of an ebookstore really all that original? Do you think it deserves protection or would you agree that a bunch of different people probably thought it up on their own?
Speaking of Microsoft, they've descended into patent trolling as well. Another example of their trolling broke today. Quanta (maker of the Playbook, Kindle Fire, and other gadgets) signed a patent agreement with Microsoft. In exchange for an undisclosed sum of money, Quanta got to keep running their business without being sued by Microsoft.
I've covered Microsoft's patent agreements before (here and here), and they all pretty much come down to the deal announced today. All the companies pay a vig to Microsoft so they keep innovating and shipping new products. Why not? it's cheaper than being sued.
Even when companies aren't sued, they're still wasting vast sums buying up patents just to protect themselves (or to sue others, TBH. Next time that you hear about a patent portfolio selling for millions or billions of dollars, please remember that the buyer isn't getting the patents for the ideas, they're buying patents for protection. The buyer is betting that the billions spent to buy up a huge portfolio will cut the legal costs of patent lawsuits. In any case, this is money that they're not using to develop a new and better product or service.
And that is the greatest tragedy of the patent system. It no longer helps a creator protect an invention. Now patents are only a financial drain on people who are doing the real work of coming up with new ideas and new products.
That's one man's opinion, anyway.