Dual Invention and Utility Model Patent Filings in China Manufacturing
Dual patent filings in China secure fast utility model protection within months while preserving long-term invention patent exclusivity under Article 9.
Double Patenting
Meaning
Intellectual property rules prohibiting the grant of two patent rights for the identical invention protect the integrity of the patent system in China. The prevention of double patenting ensures that an applicant cannot extend their monopoly period beyond the statutory limit by filing multiple applications for the same technical solution. This doctrine is administered by the China National Intellectual Property Administration during the examination process.
Statutory Restriction
Under Article 9 of the Patent Law of the People’s Republic of China, only one patent right can be granted for any single invention. This restriction applies whether the applications are filed by different entities or by the same applicant on different days. If two identical applications are pending, the first to file holds the right to the patent, while the later application is rejected.
Resolution Procedure
When the same applicant files both a utility model application and an invention patent application for the identical technical solution on the same day, the applicant can choose to abandon the utility model to obtain the invention patent. The utility model remains valid and protects the technology until the invention patent is ready for grant, at which point the applicant submits a written declaration to abandon the utility model. This mechanism allows continuous protection without violating the rule against double patenting.
This transition must be completed before the invention patent can be registered.
Sourcing Risk
Supply chain managers must verify that the technology used in their components is protected by a single, valid patent rather than overlapping filings that could face invalidation. If a supplier has failed to properly manage their dual filings, their patents can be challenged by competitors and declared invalid by the authorities. This invalidation can expose the purchasing factory to infringement claims or interrupt the supply of critical components.