Can I add comparison files to invalid patents?

Of course. Invalid patent can add contrast files, and the invalid claimant can directly quote the contrast files used by the examiner in the review, which is allowed by law. Patent is the abbreviation of patent right, which refers to the patent right enjoyed by the patentee for his invention and creation, that is, the state grants the inventor or his successor the exclusive right to use his invention and creation within a certain period of time according to law.