1. Failing to pay the patent application fee and printing fee on schedule. 2. Failing to reply to the examiner's correction notice on schedule. 3. Submit the request for substantive examination and pay the substantive examination fee on schedule (within 3 years from the date of application).
Legal basis: Article 6 of the Patent Law of People's Republic of China (PRC) refers to inventions and creations made by performing the tasks of the entity or mainly using the material and technical conditions of the entity. The right to apply for a patent for a service invention-creation belongs to the unit; After the application is approved, the entity shall be the patentee. The right to apply for a patent for a non-service invention-creation belongs to the inventor or designer; After the application is approved, the inventor or designer shall be the patentee. Where an invention-creation completed by making use of the material and technical conditions of the entity has a contract with the inventor or designer to stipulate the right to apply for a patent and the ownership of the patent, such agreement shall prevail.