Lawyer Hsiao Hsiung-lin explains that all books published before 1965 (that is, a full twenty years before the implementation of the amendments to the copyright law in 1985) which have not been registered in Taiwan are considered in the public domain, and there are no worries about publishing rights in using them.
律師蕭雄淋解釋，凡一九六五年以前出版（民國七十四年著作權法修正施行前發行已滿廿年的書）、未在台灣註冊登記的書籍都屬公共財，使用上沒有版權的顧慮。