Can I apply for a patent for the new use of the product?

You can apply for a patent for a new use of the product. Usage invention refers to the invention of using known products for new purposes. If the new use of the product can produce unexpected technical effects, and the use has outstanding substantive characteristics and remarkable progress, the invention is creative. For example, pentachlorophenol preparation as a wood bactericide is used as a herbicide, which has achieved unexpected results and the invention is creative. But if the new application only uses the known properties of known materials, it is not creative. For example, in the same technical field, it is not creative to use a known composition as a lubricating oil as a cutting agent.