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> The case against trolls is so clear and obvious, why does it seem so difficult to craft legislation to prevent this?

Patent trolls (the most successful ones, anyhow) practice Batsian Mimicry as a defensive strategy: they specifically try to look as much like a small inventor who's invention has been stolen by one or more bad actors. It is never simple to disrupt an evolutionary arms race.

> I imagine a simple addition to patent laws invalidating a patent if the holder does not commercialize it after a certain period should get rid of NPEs. Is it not that simple?

Are you aware of how long it takes drugs, for example, to get from the patent stage to the commercialization stage? I'm sure there are other obvious industries where this would be problematic to the normal way of doing business.

On a more broad note: is it good to require that all inventors directly commercialize their own inventions? At best, I think this is an open question.




A patent is way to encourage inventions, awarding the inventors the exclusive rights to their own inventions.

The public good is a priority. The idea is that the invention is beneficial to the public. If somebody creates a good invention but deny it from the public, this patent should not be in public interest anymore.


> somebody creates a good invention but deny it from the public

for about 15 years.. After 15 years the public can make use of the invention without paying a penny. How it is not in publics interest?


Because even if removing the patent system meant that the invention was kept secret from the public, it would most likely be reinvented many times in that 15 year time. The worst part of patents is that they extend even to others who do the legwork themselves, and frequently stifle an entire area (for example, 3D printing exploded in popularity and accessability right after some key patents held by stratasys expired, and this was in the best case of a company actually developing the technology they had patented).


We are talking about an exceptional case here. The patent owner is a wealthy and extentric agent who disregarts potential profit from selling/licensing/using the patent. And even in such rare and unexpected cases the public eventually gains access to inventions - which is not neccessarely the case for inventions kept secret. Basically, the society trades speed of technological development for certaininity of achieving its goals.


For 15 years nobody can use a invention, even if willing to pay. How is that in public interest?


I'm guessing the practical meaning is that the inventor is not required to license the invention "at a fair and reasonable" price but is free to ask whatever he/she feels is appropriate. I could imagine a case where the industry the inventor wishes to market to is controlled by a cartel which colludes to offer a low price for the invention. In this case, the inventor may wish not to sell or license in the hope that the cartel breaks up or gives in.


The public also benefits from people inventing alternatives to patented inventions.


That's debatable. Your point is that patent would encourage diversity which I'm sure it doesn't change much. Worst it sometimes prevents advances


How’s that good for the public?


More alternatives to choose from.


Don't patent trolls generally have hundreds of random unrelated patents they sit on? That sounds very different from a "small inventor who's invention has been stolen". Maybe we can limit the number of simultaneous patents you can sit on?


Shell companies and M&A make this a difficult proposition.


> Are you aware of how long it takes drugs, for example, to get from the patent stage to the commercialization stage?

Patent law already handles this providing pharma patents additional protection time for regulatory delays.




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