Abstract: The meaning of the original text is well transferred in the official English version of Patent Law,but some errors or ambiguities appear in the translation which manifest themselves in the misuse of legal terms,coinage of new terms under the delusion that there is no corresponding term in the target language,prepositions and modal verbs and so on.The article points out and analyses these errors and puts forward the author’s solutions.

Key words: Chinese Patent Law, legal translation, legal terms