I received an Office Action (notice of grounds for rejection) during examination. What procedure should I follow?

A person who wishes to submit an opinion in accordance with the content of an Office Action (notice of grounds for rejection) may, within the submission period stated in the Office Action, file a written opinion or an amendment of the bibliographic matters (specimen). A document proving the content of the opinion may be attached to the written opinion, and where the applicant wishes to delete or correct the designated goods, etc. in the application, an amendment of the bibliographic matters may be filed (Article 23 of the Trademark Act).