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Q150. Who can request a trial for patent invalidation?

Q150. Who can request a trial for patent invalidation?

A150. Generally, anyone can request a trial for patent invalidation. However, only an interested party can request a trial for patent invalidation if the trial is requested on the grounds that the patent application was not jointly filed by co-applicants or that the patent application was filed by a person who is not the inventor and has not succeeded to the right to obtain a patent.