A pure piece of software, such as QQ, cannot apply for a patent and can only be protected by copyright.
The improvement of the integrated block is protected through the integrated circuit layout design. If the structure or other changes are made, such as using a special substance to replace the resistor, you can apply for an invention. , if you just make changes to the layout of existing circuits, or apply for integrated circuit layout design, the creativity may not be enough when applying for a patent.
If you develop a Z4 product, you should apply for a patent for the product. Apply for multiple patents based on its different points and the combination of software and hardware. How to apply depends on your specific product. For example, you must apply for an appearance patent for z4 products.