In the following cases, a person making an agreement to conduct a standard transaction (meaning a transaction conducted by a specified person with an unspecified and large number of persons as the counterparties, in which the uniformity of the whole or part of the transaction is reasonable to both parties; the same applies below) (that agreement is referred to as an "agreement on standard transaction" in the following Article) is deemed to have made an agreement on each provisions of the standard terms and conditions(referring to a collection of provisions prepared by that specific person with the purpose of applying them as contract terms for a standard transaction; the same applies below):
定型取引（ある特定の者が不特定多数の者を相手方として行う取引であって、その内容の全部又は一部が画一的であることがその双方にとって合理的なものをいう。以下同じ。）を行うことの合意（次条において「定型取引合意」という。）をした者は、次に掲げる場合には、定型約款（定型取引において、契約の内容とすることを目的としてその特定の者により準備された条項の総体をいう。以下同じ。）の個別の条項についても合意をしたものとみなす。
if the person agrees to apply the standard terms and conditions as the contract terms; or
定型約款を契約の内容とする旨の合意をしたとき。
if the person that has prepared the standard terms and conditions (referred to as the "preparer of the standard terms and conditions" below) manifests to the counterparty the intention to apply the standard terms and conditions as the contract terms in advance.
定型約款を準備した者（以下「定型約款準備者」という。）があらかじめその定型約款を契約の内容とする旨を相手方に表示していたとき。
Notwithstanding the provisions of the preceding paragraph, the person is deemed not to have agreed to any provisions referred to in that paragraph that restrict the rights or expand the duties of the counterparty and that are found, in light of the manner and circumstances of the standard transaction as well as common sense trading practices, to unilaterally prejudice the interests of the counterparty in violation of the fundamental principle prescribed in Article 1, paragraph (2).