SAN FRANCISCO (Reuters) – For the first time, individuals and companies that do not themselves make anything – commonly known as “patent trolls” – are bringing the majority of U.S. patent lawsuits, according to a study by a California law professor. The sharp increase in this type of lawsuit serves as a milestone likely to exacerbate the tension over patent issues and increase calls for patent reform and scrutiny of the system. …

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Patent lawsuits now dominated by “trolls”: study