失效专利检索

失效专利检索、免费可用的专利技术。当用户说「有没有失效的专利可以直接用」「这个技术有过期的专利吗」「找免费技术方案」「哪些专利已经不保护了」「中小企业找可用技术」时使用。输出失效专利清单(Excel 能打开),带失效原因和需要再核实的提醒。 Finds lapsed Chinese invention patents in a technology whose solutions are public and no longer protected, grouped by lapse reason, with items to double-check before use.

Install

openclaw skills install @ip930/expired-patent-finder