"Various features of the US patent and litigation system may contribute to the widespread occurrence of trolling in the US. The following aspects have been named as supportive of patent trolling: * high costs of legal proceedings; […] * low examination quality creating uncertainty about the scope of protection; * general and broadly defined extension of patentable subject matter to software and business method. […] Given a situation in which patent offices such as the EPO express concerns about "global patent warming", a relaxation of standards or extension of patentable subject-matter would not be welfare-enhancing. […] Particular attention needs to be given to the future posture of the Court a pro-patent view could easily lead to dysfunctional effects as have been apparent in the USA after the
introduction of the CAFC."
Source: http://ec.europa.eu/internal_market/indprop/docs/patent/studies/litigation_system_en.pdf


