Legal analysis: First of all, we should understand and satisfy the patent right and its stability, the geographical scope of patent protection and the duration of patent protection. Under the above conditions, an international application for a patent may be filed by a qualified applicant or a necessary applicant. There are two main ways to apply for international patents: PCT and Paris Convention.
Legal basis: Article 28 of the Agreement on Trade-related Intellectual Property Rights, if the object of a patent is the method of obtaining a product, the judicial organ has the right to order the defendant to prove that the method of obtaining the same product is different from the method of obtaining a patent.