Utility Model Invalidation Procedures before CNIPA Patent Review Board
Invalidating a Chinese utility model requires establishing direct structural prior art disclosures within a strict one-month supplemental evidence window.
Dual Filing Strategy Article 9
Meaning
Intellectual property protection methods in China utilize the simultaneous filing of both invention and utility model patent applications to secure immediate coverage while waiting for the full examination. Dual filing strategy article 9 refers to the practice permitted under the Patent Law of the People Republic of China where an applicant files for an invention patent and a utility model patent for the same invention on the same day. This approach takes advantage of the fact that utility models are granted quickly after a preliminary examination, while invention patents undergo a lengthy substantive examination.
Article 9 of the Patent Law prohibits double patenting, meaning that two patents cannot be granted for the identical invention. However, it allows the applicant to use the utility model to protect the invention in the short term and then abandon the utility model once the invention patent is ready for grant. This strategy is particularly effective for products with short lifecycles or when immediate protection is needed to prevent competitors from entering the market.
Application Priority
Applicants must ensure that both filings occur on the same date and that the descriptions of the invention are consistent across both documents. The utility model patent usually issues within six to twelve months, providing the owner with the right to sue for infringement much sooner than an invention patent would allow. This early protection is a major advantage in the competitive manufacturing landscape.
The invention patent application continues through the substantive examination process, which can take several years.
Patent Conversion
When the examiner determines that the invention patent is eligible for grant, the applicant is notified and must make a choice between the two forms of protection. To obtain the invention patent, the applicant must formally declare the abandonment of the utility model patent that was previously granted. This ensures that there is no period where two identical patents exist for the same technology, satisfying the requirement of article 9.
The abandonment of the utility model is a procedural step that happens at the very end of the invention patent examination process. If the invention patent is rejected for lack of novelty or inventiveness, the utility model remains in force for its full ten-year term. This provides a safety net for the applicant, as the standards for inventiveness are lower for utility models than for invention patents.
Protection Duration
The choice between the two patents involves a trade-off between the speed of protection and the total length of the patent term. Utility models last for ten years, while invention patents provide twenty years of protection from the date of filing. By using the dual filing strategy, a company can enjoy the benefits of a utility model during the early years of product commercialization and the longer term of an invention patent later on.
This method is especially useful for mechanical inventions where the design is easily copied by rivals. The cost of filing two applications is higher than a single one, but the benefits of early enforcement often outweigh the additional fees. It is necessary to monitor the status of both applications carefully to ensure that the transition from utility model to invention patent occurs smoothly.
The strategy is limited to the same applicant and the same invention, so it cannot be used to combine different technologies. If the applicant fails to abandon the utility model at the required time, the invention patent application will be rejected. This process maintains the integrity of the patent system by preventing a single entity from holding multiple patents for one discovery.
The dual filing strategy is a fundamental part of the intellectual property planning for firms operating in China.