WHERE the crown hath unadvisedly granted any thing by letters patent, which ought not to be granted, or where the patentee hath done an act that amounts to a forfeiture of the grant, the remedy to repeal the patent is by writ of scire facias in chancery. This may be brought either on the part of the king, in order to resume the thing granted; or, if the grant be injurious to a subject, the king is bound of right to permit him (upon his petition) to use his royal name for repealing the patent in a scire facias.