How Divisional Patent Applications Work In China

Chinese divisional practice is known for its unique timing requirements, prerequisites for filing a divisional, and strict procedural deadlines. For patent holders looking to secure their rights in China, it is crucial to have an understanding of these differences.

In China, filing a divisional application is routinely initiated by applicant, and commonly adopted to provide strategic flexibility to patent protection.

However, the parameters differ significantly from the requirements in the US and EU. To assist patent owners in understanding these differences, we provide a brief introduction to the related rules and practice tips.

Division application timeline in China

A divisional application can be filed at any time during the pendency of the parent application. Typical scenarios are summarised in the below table.