Meaning
Statutory intellectual property rights in China are divided into distinct categories with varying levels of examination and protection terms. An invention patent represents the highest tier of protection, granted for new technical solutions relating to a product, a process, or an improvement. It undergoes a full substantive examination before being granted.
Technical Novelty
Applicants must demonstrate that their technical solutions are both novel and non-obvious to secure a grant. To obtain an invention patent, the technology must not belong to the state of the art anywhere in the world before the filing date. Examiners from the patent office conduct searches across global databases to verify this novelty.
The application must also show an inventive step that provides practical benefits. This examination process typically takes several years to complete.
Statutory Protection
Granted patents receive a long term of protection that rewards the inventor with an exclusive monopoly. An invention patent provides twenty years of protection from the filing date, compared to the shorter terms given to utility models or designs. During this period, the patentee has the right to prevent others from making, using, selling, or importing the patented product.
This long duration is necessary for industries with long development cycles like pharmaceuticals or advanced telecommunications.
Commercial Enforcement
Enforcing a patent against infringers requires filing a lawsuit in a specialized intellectual property court or seeking help from administrative authorities. Because an invention patent has passed substantive examination, it carries a high presumption of validity during litigation. This makes it a formidable weapon in commercial disputes.
Infringers face injunctions and heavy damages under Chinese civil law. The strength of this protection makes it the preferred tool for companies that operate in the Chinese market. It allows them to protect their market share and secure licenses from local manufacturers.