Repeated applications for a patent on the same day will be deemed invalid.

Patents are designed to protect innovative technological achievements such as new inventions, utility models, and designs. Applying for multiple patents on the same day is generally considered to have no substantial difference or is a duplicate application, which neither satisfies the novelty and innovation requirements of the Patent Law nor complies with the principle of fairness and equity. Therefore, in order to ensure the rigor and practicality of patent applications, duplicate patent applications filed on the same day are not allowed.

Patents and trademarks have different protection methods and requirements, so there are also differences in the issues when applying for them on the same day.