Post-filing data is important for the Applicant to get a patent right, especially for the Applicant in the biological and chemical field. However, you may find the examination standard for the post-filing data is very strict in China.
The sixth amendments to the Guidelines for Patent Examination already have taken effect on January 15, 2021, making a new clarification for the examination of the post-filing data.
After the 4th amendment of China Patent Law, China has extend the design patent protection term from 10 years to 15 years, from the date of filling. In the US, the term is also 15 years, from the date of grant. Before the amendment, China only allow to use solid lines to protect the design as whole product. Now, as the same in the US, China start to allow partial design protection by using broken lines.