Meant to be a way to incentivize invention, meant to be a way to orchestrate the dissemination of knowledge, they are increasingly being used by large companies to create thickets of patents to prevent innovation taking place.
本该是一种刺激发明创造的机制， 本该是一种协调知识传播的机制， 但是它们越来越被大公司 用来制造专利壁垒 来阻止发明创造。