Is the time limit for patent reexamination increased by 15 days?

No, China's patent law stipulates that different types of patents apply to different types of patents. For an application for a patent for invention, the reply period of the first notice of examination opinions is 4 months, and then 2 months each time; For applications for patents for utility models and designs, the time limit for each notice of examination opinions is 2 months. When calculating the time limit, add 15 days to estimate the time of receipt, so the first notice of review opinions is 15 days plus 4 months, and the subsequent notice of review opinions is 15 days plus 2 months.