If the patent system works, i.e, it is beneficial to society for technology companies to sue people who infringe their patents, then I think allowing "non-pract

If the patent system works, i.e, it is beneficial to society for technology companies to sue people who infringe their patents, then I think allowing "non-practicing" entities will be beneficial also. By allowing companies to sell their patents and then licensing it back royalty-free, they are able to "out-source" their responsibility to shareholders (and the law?) to sue anyone who infringe on the patents. This means they can concentrate on R&D and making things people want, which is what they are best at, rather than spending time worrying about and looking for patent infringements. This latter task is better reserved for people good at lawsuits and doing them at lower opportunity costs, like the founder of Round Rock Research LLC. That is, if the patent system works.