When a patent application is rejected by the examiner, a reexamination can be filed. The reexamination is a relief program to overturn the rejection issued by the examiner.

The patent invalidation can be filed against any granted patent by anyone who provide(s) evidences and observations to indicate that the patent should not be granted. The patent invalidation often is filed, when infringement risk is posed or infringement legal action is taken, to avoid occurrence/establishment of the infringement.  Furthermore, the patent invalidation may be filed by a commercial competitor.

Both patent reexamination and invalidation will influence a determination of whether the patent could be granted or valid. And, usually, an administrative action may be taken after the reexamination/invalidation. Therefore, it is very important to master the strategy of reexamination/invalidation. The professional patent lawyers and agents of the Haijun team use their professional skills and rich experience to provide customers with scientific solutions.