Attorney Regulation Act Article 49

Where sole-proprietorship and co-location attorneys or law firms use any names or signs that may mislead others into believing that they are partnership attorneys or law firms, all attorneys in such firms shall be jointly and severally liable for the execution of the firm’s business in accordance with the provisions regarding partnership in the Civil Code.
中文原文 律師法第49條
獨資及合署之律師或法律事務所使用之名稱或標示,足以使他人誤認為合夥律師或法律事務所者,事務所全體律師應依民法合夥之規定,就業務之執行負連帶責任。

English translation for reference only; the Chinese text prevails. Not legal advice.