The manufacturing method of its products shall be provided.

In tort litigation, evidence has always been the focus of defense debate. Generally speaking, civil litigation follows the distribution rule of burden of proof, that is, according to this rule, for patent infringement involving manufacturing methods, the patentee needs to prove that the manufacturing method of the infringing product is the same as that of the patented product.

However, there is a special inversion of burden of proof in patent infringement litigation, that is, for the invention patent of "new product manufacturing method", the accused infringer provides evidence that its product manufacturing method is different from the patent method. That is to say, for "new products", the patentee no longer bears the same burden of proof as the patented products, and shifts the burden of proof to the accused infringer.