infringer

The infringement exists even if the infringer did not know about the patent..即使侵权人不了解专利侵权依然存在。

When the administrative authority for patent affairs handling the matter considers that the infringement is established, it may order the infringer to stop the infringing act immediately..管理专利工作的部门处理时，认定侵权行为成立的，可以责令侵权人立即停止侵权行为。

Fair use is a very narrow exemption under copyright law where an infringer is not liable for using someone else’s copyrighted work without permission..版权法所豁免的合理使用范围很窄，在此范围内，侵权者未经许可使用他人作品是不负有赔偿责任的。