Z:gnu-www-ja-rms-why-gplv3--bf4acd-Therefore, GPLv3 seeks to limi/en

Therefore, GPLv3 seeks to limit and channel the danger. In particular, we have tried to save free software from a fate worse than death: to be made effectively proprietary, through patents. The explicit patent license of GPLv3 makes sure companies that use the GPL to give users the four freedoms cannot turn around and use their patents to tell some users, &ldquo;That doesn't include you.&rdquo; It also stops them from colluding with other patent holders to do this.