If you have manufactured the same product, used the same method, or are ready to manufacture or use it before others apply for a patent, you can produce it within the original scale after the patent is granted. , but license fees are required for products that exceed the original scale.
If someone else has applied for an invention patent before, and you manufacture and use it later, you should pay appropriate royalties after the publication of someone else's invention patent and before it is authorized. After the patent is authorized, you need to obtain the patent right. Otherwise, it will be an infringement