What is it people have against "patent trolls"? So what if they have no product. Is making the product the hard part or coming up with the idea the hard part.
The problem is, the original idea of patents was that you could invent something novel, draw up the designs and send them to the patent office, and you would be granted a period of time during which you could implement and sell real physical devices from your design, without worrying that someone would simply copy your design and compete against you. This was a worthwhile and worthy notion. In exchange for the government granting you this protection, your idea was on file and available to the public, and after your period of exclusivity ran out, others could use your design as blueprints for making their own copies of your device. As well, the time periods for exclusivity and such were chosen when we didn't have the ability to have something mass produced and on every store shelf nationwide two weeks later. When it could take years for simply the knowledge that someone had invented a new can opener, or whatever, to spread across the nation.
These days, the "patent trolls" are quite literally gaming the system. The game is, "just how wide-ranging and vague of an idea can we get the Patent Office to give us a patent for?" And they get patents granted for some pretty vague ideas, like the concept of encrypting messages between computers. Not a specific implementation, but the whole general concept. When any decently capable programmer, faced with the same problem, would have implemented a solution very similar to the one that's patented. Not because they looked at the patented design, but because the solution was somewhere between obvious and inevitable - the exact opposite of novel, as is fundamental to the idea of patents and theoretically required by our patent system.
Then the trolls sit back and wait for someone else to do the hard work of actually making an implementation of the obvious idea work and work well, where the implementors had no knowledge of the patent, and they jump in and say, "Aha! We have a patent on that entire field of ideas! Pay up!" It's gaming a system to extract money from others, rather than using the system as intended to allow actual inventors to profit from their actual inventions. And it's putting whole ranges of
obvious solutions to problems
out of bounds, because someone got the Patent Office to grant them a vague patent that they can argue covers an entire area of research. This is harmful to society as a whole.
To be clear, I'm not saying patents are bad, I'm saying patent trolls are bad. Letting them game the system to take whole ranges of obvious solutions to problems off the table, hurts us all.