The tragedy of the anticommons is a new phrase invention of Michael Heller. It says, that things can go bad if too many people have rights on a shared thing. It is related to the phrase "tragedy of the commons," which says that things can go bad if not enough people have rights. It is a general phrase for problems like patent thickets, submarine patents, nail houses, and more red tapes. It is difficult to find solutions, but some of them are eminent domain, Laches, patent pools or other agreements on rights and copyrights.