MOEA ruled in an appellate decision (Ref. No. 10306108380) that pursuant to Article 77-(1) of the Patent Act, if IPO approves a post-grant amendment(s) during an invalidation proceedings, it shall forward a copy of the amended description, claim(s) and/or drawing(s) to the invalidation petitioner in order to fully protect the petitioner's right. IPO shall not be allowed to substitute such requirement with other means for convenience purpose. On that basis, MOEA revoked IPO's decision of denying the petition for invalidation.