From the Japan Patent Office's Annual Report 2018, we read that
√ Number of Japanese patent applications filed by Chinese applicants was more than double what it was 5 years ago.
√ Huawei ranked No. 4 with 667 patent applications and was the only Chinese company that made into top 10.
√ It took about 9.4 month for Japanese patent applications to receive the first Office Action and about 14.6 month to receive the examination decision, while those in China were 16.9 and 22.0 month.
Courtesy information from SHIGA INTERNATIONAL PATENT OFFICE.
