The reason why different countries make different decisions on the same patent is that the examination procedures are different in each country. There are differences in patent regulations, legal systems, examination standards, examination processes, etc. in various countries. In addition, factors such as the legal system, cultural background, and economic development level of different countries will also have an impact on patent review. Therefore, the same patent will face different review results in different countries. It may be approved in some countries but not in others. Some countries were rejected or requested modifications.