202 1/2020 Edition Textbook P25
An invention-creation for which a patent is applied shall not lose its novelty if it is under any of the following circumstances within six months before the date of filing: ① It was exhibited for the first time at an international exhibition sponsored or recognized by the government of China. Therefore, a mistake
Creativity. Creativity means that the invention or utility model has outstanding substantive characteristics and remarkable progress compared with the existing technology. Therefore, C is correct.
Practicality does not require that the invention or utility model has produced positive effects, but only requires the possibility of producing positive effects in the future. So b is wrong
The design to which the patent right is granted shall be different from or similar to the design that has been published in domestic and foreign publications or publicly used in China before the date of application, and shall not conflict with the legal rights previously obtained by others. So d error