Since the benefits of the patent system are so tenuous and subtle and the overall benefit/cost ratio is considered to be negative, there is no economic justification for extending patent monopolies by lengthening the term, or by widening the grounds for either infringement, or patentability (for example, plant variety rights or computer programs). However, in the light of our findings, there is considerable economic justification for policy action to reduce the negative effects of the patent system by stricter examination, by reducing the length of term and the scope of patent monopolies, and by action to deal with undesirable restrictive practices in patent licensing.
An historical awareness of the political economy of patent reform suggests that this task is not easy at the domestic policy level. This is basically because those who perceive they would lose by such reform are concentrated, powerful and active defenders of their interests. In contrast, those who would gain by patent reform are diffuse and hardly aware of their interest in the matter.