Generally, the first inventor, the second inventor, the third inventor and the fourth inventor can be selected. Because the ranking of most patent inventors is based on their contributions, people naturally think that the higher the ranking, the greater the contribution, the stronger the ability, the most impressive, and the greater the chance of being selected for the title. In this way, the second inventor is actually very useful for people who want to evaluate professional titles. The higher the ranking, the higher the score.
However, for some senior titles, if there is a ranking regulation that requires the first inventor, then the role of the second inventor is almost gone. Therefore, giving full play to the role of patent inventor ranking depends on the actual situation. Therefore, the first inventor is dominant, and the second person does not need to provide any proof without special circumstances.