1. Rejection review is the only remedy for a rejected patent application.
2. If the agency is not professional in the process of replying to the review opinions and the application is rejected, a reexamination is necessary to recover.
3. There is only one examiner in the Patent Office. Patent rejection is subjective. The parties can influence the retrial of the patent by the Patent Reexamination Board by explaining the reasons and providing evidence during the rejection review. There are three examiners. The trial is more objective.
4. To re-apply for other patented technologies, the review time is about 2 years. The time cost is too high, and the review period is relatively short.