Model layerThe model layer covers improvements to model structure or processing procedures. Typical model layer innovations include novel model structures such as transformer architecture and mixture of experts (MoE) architecture. Protection strategies for model layer innovationsGiven the distinctive attributes of model layer innovations, enterprises may safeguard such innovations either through trade secret or by patent filings. Drafting model layer patentsA recurring hurdle in securing Chinese patent protection for model layer innovations concerns patent-eligible subject matter. Drafting GenAI application layer patentsThe following discusses the drafting of application layer patents from the perspectives of claims, specification, and drawings.