How to treat the China version of foreign patents

First of all, you need to determine the accurate English names and accurate classification positions of technical keywords in this technical topic. Then you can search for IPC international classification number and English keywords in the patent database of esp@cenet on the website of the European Patent Office.

The website Esp@cenet of the European Patent Office contains three databases: EP database, WIPO database and Worldwide database. Among them, the world-wide database is the most comprehensive patent document in esp@cenet, which is convenient to use and can meet most retrieval requirements. In the esp@cenet retrieval system of the website of the European Patent Office, the advanced retrieval mode can be selected, and the advanced retrieval interface is divided into two areas: database selection area and retrieval item input area. The system provides 10 retrieval fields. When searching, you can only search in one search field or in multiple fields. Enter relevant English technical keywords or IPC international classification number in the corresponding fields for retrieval.