Article 637, paragraph (1)
A membership company may change its articles of incorporation with the consent of all members, unless otherwise provided for in the articles of incorporation.
持分会社は、定款に別段の定めがある場合を除き、総社員の同意によって、定款の変更をすることができる。
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会社法
Chapter VI Change in Articles of Incorporation
The law as Act on the Arrangement, etc. of Related Acts upon the Enforcement of the Act on Security Assignment Contracts and Retention of Title Contracts (Act No. 57 of 2025) leaves it, with the words it changes marked.
The main text is read a page at a time: a chapter to a page, and a long chapter in runs of articles. The whole main text, and the supplementary provisions and appended tables this amendment changes. Those it leaves untouched are on the page for the text in force.
Chapter VI Change in Articles of Incorporation第六章 定款の変更
Article 637第六百三十七条
Change in Articles of Incorporation（定款の変更）
Article 638第六百三十八条
Change in Kind of Membership Companies by Change in Articles of Incorporation（定款の変更による持分会社の種類の変更）
Article 638, paragraph (1)
A general partnership company, by effecting the change in the articles of incorporation set forth in each of the following items, becomes a membership company of the kind specified in each item:
合名会社は、次の各号に掲げる定款の変更をすることにより、当該各号に定める種類の持分会社となる。
Article 638, paragraph (1), item (i)
changes in the articles of incorporation that admits members with limited liability:limited partnership company;
有限責任社員を加入させる定款の変更 合資会社
Article 638, paragraph (1), item (ii)
changes of the articles of incorporation to convert some of its members into members with limited liability:limited partnership company;
その社員の一部を有限責任社員とする定款の変更 合資会社
Article 638, paragraph (1), item (iii)
changes of the articles of incorporation to convert all of its members into members with limited liability:limited liability company.
その社員の全部を有限責任社員とする定款の変更 合同会社
Article 638, paragraph (2)
A limited partnership company, by effecting the change in the articles of incorporation set forth in each of the following items, becomes a membership company of the kind specified in each of relevant items:
合資会社は、次の各号に掲げる定款の変更をすることにより、当該各号に定める種類の持分会社となる。
Article 638, paragraph (2), item (i)
changes in the articles of incorporation to convert all of its members into members with unlimited liability:general partnership company; and
その社員の全部を無限責任社員とする定款の変更 合名会社
Article 638, paragraph (2), item (ii)
changes in the articles of incorporation to convert all of its members into members with limited liability:limited liability company.
その社員の全部を有限責任社員とする定款の変更 合同会社
Article 638, paragraph (3)
A limited liability company, by effecting the change in the articles of incorporation set forth in each of the following items, becomes a membership company of the kind specified in each of relevant items:
合同会社は、次の各号に掲げる定款の変更をすることにより、当該各号に定める種類の持分会社となる。
Article 638, paragraph (3), item (i)
changes in the articles of incorporation to convert all of its members into members with unlimited liability:general partnership company;
その社員の全部を無限責任社員とする定款の変更 合名会社
Article 638, paragraph (3), item (ii)
changes in the articles of incorporation to admit members with unlimited liability:limited partnership company; and
無限責任社員を加入させる定款の変更 合資会社
Article 638, paragraph (3), item (iii)
changes in the articles of incorporation to convert some of its members into members with unlimited liability:limited partnership company.
その社員の一部を無限責任社員とする定款の変更 合資会社
Article 639第六百三十九条
Deemed Changes in Articles of Incorporation on Withdrawal of Members of a Limited Partnership Company（合資会社の社員の退社による定款のみなし変更）
Article 639, paragraph (1)
If, due to withdrawal of members with limited liability, members of a limited partnership company consist only of members with unlimited liability, relevant limited partnership company is deemed to have effected a change in the articles of incorporation to become an general partnership company.
合資会社の有限責任社員が退社したことにより当該合資会社の社員が無限責任社員のみとなった場合には、当該合資会社は、合名会社となる定款の変更をしたものとみなす。
Article 639, paragraph (2)
If, due to withdrawal of members with unlimited liability, members of a limited partnership company consist only of members with limited liability, relevant limited partnership company is deemed to have effected changes in the articles of incorporation to become a limited liability company.
合資会社の無限責任社員が退社したことにより当該合資会社の社員が有限責任社員のみとなった場合には、当該合資会社は、合同会社となる定款の変更をしたものとみなす。
Article 640第六百四十条
Performance of Contributions in Changing Articles of Incorporation（定款の変更時の出資の履行）
Article 640, paragraph (1)
If changes in the articles of incorporation set forth in Article 638, paragraph (1), item (iii) or paragraph (2), item (ii) of the same Article is to be effected, if members of the membership company that effects relevant changes in the articles of incorporation have not performed all or part of the payment in or delivery relating to the contributions to the limited liability company after relevant changes in the articles of incorporation, relevant changes in the articles of incorporation take effect on the day when relevant payment in and delivery have been completed.
第六百三十八条第一項第三号又は第二項第二号に掲げる定款の変更をする場合において、当該定款の変更をする持分会社の社員が当該定款の変更後の合同会社に対する出資に係る払込み又は給付の全部又は一部を履行していないときは、当該定款の変更は、当該払込み及び給付が完了した日に、その効力を生ずる。
Article 640, paragraph (2)
If changes in the articles of incorporation to become a limited liability company are deemed to have been effected pursuant to the provisions of paragraph (2) of the preceding Article, if the members have not performed all or part of the payment in or delivery relating to the members' contributions, the payment in or delivery must be completed within one month of the day when relevant changes in the articles of incorporation are deemed to have been effected; provided, however, that this does not apply if changes in the articles of incorporation to become a general partnership company or limited partnership company are effected within relevant period.
前条第二項の規定により合同会社となる定款の変更をしたものとみなされた場合において、社員がその出資に係る払込み又は給付の全部又は一部を履行していないときは、当該定款の変更をしたものとみなされた日から一箇月以内に、当該払込み又は給付を完了しなければならない。ただし、当該期間内に、合名会社又は合資会社となる定款の変更をした場合は、この限りでない。