Instruct: Given a legal statement, retrieve articles that support it
Query: 
The counterparty of an act of unauthorized agency can determine a reasonable period of time for the principal and demand to ratify or not to ratify during that period, and if the principal does not provide a definite answer within the time period, the principal is deemed to have ratified.


Article 114
In the case referred to in the preceding Article, the counterparty may demand, by specifying a reasonable period of time, that the principal give a definite answer on whether or not the principal will ratify within that period of time.In this case, if the principal fails to give a definite answer within that period, the principal is deemed to have refused to ratify..


Article 124
(1) The ratification of a voidable act does not become effective unless it is made after the circumstances that made the act voidable cease to exist and the person ratifying the act becomes aware of the right to rescind it.
(2) In the following cases, the ratification referred to in the preceding paragraph is not required to be made after the circumstances that made the act voidable cease to exist:
(i) if a legal representative or a curator or assistant of a person with qualified legal capacity ratifies the act; or
(ii) if a person with qualified legal capacity (excluding an adult ward) makes the ratification with the consent of a legal representative, curator or assistant.
Article 125
If, at or after the time when it becomes possible to ratify an act, any of the following facts occur with respect to a voidable act, it is deemed that the act has been ratified;provided, however, that this does not apply if an objection is reserved:
(i) full or partial performance;
(ii) request for the performance;
(iii) novation;
(iv) provision of a security;
(v) assignment of a part of or the whole of a right acquired by the voidable act; or
(vi) compulsory execution..


Article 125
If, at or after the time when it becomes possible to ratify an act, any of the following facts occur with respect to a voidable act, it is deemed that the act has been ratified;provided, however, that this does not apply if an objection is reserved:
(i) full or partial performance;
(ii) request for the performance;
(iii) novation;
(iv) provision of a security;
(v) assignment of a part of or the whole of a right acquired by the voidable act; or
(vi) compulsory execution..


Article 124
(1) The ratification of a voidable act does not become effective unless it is made after the circumstances that made the act voidable cease to exist and the person ratifying the act becomes aware of the right to rescind it.
(2) In the following cases, the ratification referred to in the preceding paragraph is not required to be made after the circumstances that made the act voidable cease to exist:
(i) if a legal representative or a curator or assistant of a person with qualified legal capacity ratifies the act; or
(ii) if a person with qualified legal capacity (excluding an adult ward) makes the ratification with the consent of a legal representative, curator or assistant.
Article 126
The right to rescind an act is extinguished by the operation of the prescription if it is not exercised within five years from the time when it becomes possible to ratify the act. The same applies if 20 years have passed from the time of the act..


Article 123
If the counterparty to a voidable act is identified, the voidance or ratification of that act is made by the manifestation of intention to the counterparty..


Article 9
A juridical act performed by an adult ward is voidable;provided, however, that this does not apply to the purchase of daily necessities or to any other act involved in day-to-day life..


Article 398-4
(1) The scope of the claims to be secured by a revolving mortgage may be changed if the change is effected before the principal is crystallized. The same applies with respect to change of obligors.
(2) In order to effect the changes referred to in the preceding paragraph, it is not required that the approval of third parties including subordinated mortgagee be obtained.
(3) If the change under paragraph (1) is not registered before the principal is crystallized, it is deemed that the change was not effected..


Article 452
If an obligee has requested performance of an obligation from the guarantor, the guarantor may request the obligee to demand performance of the principal obligor first;provided, however, that this does not apply if the principal obligor is subject to an order commencing bankruptcy proceeding or if the principal obligor's whereabouts are unknown..


Article 28
If an administrator needs to perform an act exceeding the authority provided for in Article 103, the administrator may perform that act after obtaining the permission of the family court. The same applies if it is unclear whether the absentee is dead or alive and the administrator needs to perform an act exceeding the authority established by the absentee.
Article 103
An agent who has no specifically defined authority has the authority to perform the following acts only:
(i) acts of preservation; and
(ii) acts with the purpose of using or improving a thing or right that is the subject matter of the agency, to the extent that this does not change the nature of that thing or right..


Article 533
A party to a bilateral contract may refuse to perform that party's own obligation until the other party tenders the performance of that other party's obligation (including the performance of an obligation to compensate for loss or damage in lieu of the performance of an obligation);provided, however, that this does not apply if the obligation of the other party is not yet due..


Article 556
(1) An option contract for a purchase and sale made by one party becomes effective when the other party manifests the intention to complete the purchase and sale.
(2) If no period is provided in relation to the manifestation of intention referred to in the preceding paragraph, the party to the option contact may issue a notice of demand to the other party, specifying a reasonable period of time, to the effect that the other party is to give a definite answer as to whether or not that party will complete the sale within that period. In such cases, if the other party fails to give a definite answer within that period, the option contract for a purchase and sale by one party ceases to be effective..


Article 130
(1) If a party that would suffer a detriment as a result of the fulfillment of a condition intentionally prevents the fulfillment of that condition, the counterparty may deem that the condition has been fulfilled.
(2) If a party who would enjoy a benefit as a result of the fulfillment of a condition wrongfully has that condition fulfilled, the counterparty may deem that the condition has not been fulfilled..


Article 398-19
(1) If three years have passed from the time of the creation of a revolving mortgage, the mortgagor of the revolving mortgage may request the crystallizing of the principal secured.In this case, the principal secured is crystallized when two weeks have passed since the time of that request.
(2) A revolving mortgagee may request the crystallizing of the principal secured at any time.In this case, the principal secured is crystallized on the request of the same.
(3) The provisions of the preceding two paragraphs do not apply if the date on which the principal secured is to be crystallized is specified..


Article 201 (1) An action for maintenance of possession must be filed during the obstruction or within one year after the obstruction stops; provided, however, that if the possessed thing has been damaged due to construction work and either one year has passed from the time when the construction was started or the construction has been completed, the action may not be filed.


Article 108
(1) An act that a person performs as an agent of the counterparty or as agent of both parties for the same juridical act is deemed to be an act performed by a person without authority to represent;provided, however, that this does not apply to the performance of an obligation or to an act authorized by the principal in advance.
(2) Beyond what is provided for in the main clause of the preceding paragraph, an act for which the interest of the agent conflicts with the interest of the principal is deemed to be an act performed by a person without authority to represent;provided, however, that this does not apply to an act authorized by the principal in advance.
Article 113
(1) A contract concluded by a person who acts as the agent of another person but has no authority to represent does not bind the principal unless the principal ratifies it.
(2) The ratification or refusal to ratify may not be duly asserted against the counterparty unless it is made to that counterparty;provided, however, that this does not apply if the counterparty has come to know the ratification or refusal to ratify..


Article 128
While it is uncertain whether or not a condition will be fulfilled, a party to a juridical act that is subject to a condition may not prejudice the other party's interests that would arise from the juridical act upon fulfillment of the condition..


Article 424
(1) An obligee may demand the court to rescind an act which the obligor commits knowing that it will prejudice the obligee; provided, however, that this does not apply if a person that benefits from that act (hereinafter referred to as the "beneficiary" in this Subsection) does not know, at the time of the act, that the obligee will be prejudiced.
(2) The provisions of the preceding paragraph do not apply to an act with a subject matter other than property rights.
(3) The obligee may make the demand under the provisions of paragraph (1) (hereinafter referred to as "demand for rescission of fraudulent act") only if the obligee's claim has arisen from a cause that existed before the act prescribed in paragraph (1).
(4) The obligee may not make demand for rescission of fraudulent act if the obligee's claim is not enforceable by compulsory execution..


Article 28
If an administrator needs to perform an act exceeding the authority provided for in Article 103, the administrator may perform that act after obtaining the permission of the family court. The same applies if it is unclear whether the absentee is dead or alive and the administrator needs to perform an act exceeding the authority established by the absentee.
Article 103
An agent who has no specifically defined authority has the authority to perform the following acts only:
(i) acts of preservation; and
(ii) acts with the purpose of using or improving a thing or right that is the subject matter of the agency, to the extent that this does not change the nature of that thing or right..


Article 536 (1) If the performance of an obligation becomes impossible due to grounds not attributable to either party, the obligee may refuse to perform counter-performance.


Article 425-4 If an act done by the obligor is rescinded by the demand for rescission of fraudulent act made against the subsequent acquirer, the subsequent acquirer may exercise the right specified in each of the following items according to the categories set forth in the respective items; provided, however, that this is limited to the value of the counter-performance which was completed by the subsequent acquirer in order to acquire the property from the predecessor or the value of the claim which was extinguished as a result of the acquisition of the property by the subsequent acquirer from the predecessor:
(i) if the act prescribed in Article 425-2 is rescinded: the beneficiary's right to demand return of the counter-performance or right to demand reimbursement of its value from the obligor, which should have arisen pursuant to the provisions of that Article if the act were rescinded by the demand for rescission of fraudulent act against the beneficiary; or
(ii) if the act prescribed in the preceding Article is rescinded (excluding the case of rescission pursuant to the provisions of Article 424-4): the beneficiary's claim against the obligor, which should have been restored pursuant to the provisions of the preceding Article if the act were rescinded by demand for rescission of fraudulent act against the beneficiary.
Article 425-2 If an act concerning the disposition of property conducted by the obligor (excluding an act concerning the extinguishment of an obligation) is rescinded, the beneficiary may demand that the obligor return the counter-performance that the beneficiary completed in order to acquire the property. If it is difficult for the obligor to return the counter-performance, the beneficiary may demand the reimbursement of its value.


Article 460
If a guarantor has given a guarantee as requested by the principal obligor, the guarantor may exercise in advance the right to reimbursement against the principal obligor if:
(i) the principal obligor is subject to an order commencing bankruptcy proceeding, and the obligee does not participate in the distribution of the bankruptcy estate;
(ii) the obligation is due;provided, however, that no extension of time granted by the obligee to the principal obligor after the conclusion of the guarantee contract may be duly asserted against the guarantor; and
(iii) the guarantor is, without negligence, rendered a judicial decision ordering the guarantor to perform the obligation to the obligee..


Article 152
(1) If a right is acknowledged, a new period of prescription commences to run at the time of the acknowledgment.
(2) With respect to the disposition of the right of the other party, an acknowledgment referred to in the preceding paragraph does not require unlimited capacity to act or authority.
Article 467
(1) The assignment of a claim (including the assignment of a claim that is yet to arise) may not be duly asserted against the applicable obligor or any other third party, unless the assignor gives notice thereof to the obligor or the obligor has consented to the same.
(2) Notice or consent as referred to in the preceding paragraph may not be duly asserted against a third party other than the obligor unless the notice or the consent is made using an instrument bearing a certified date..


Article 192 A person that commences the possession of movables peacefully and openly by a transactional act acquires the rights that are exercised with respect to the movables immediately if the person possesses it in good faith and without negligence.
Article 193 In the cases provided for in the preceding Article, if the possessed thing constitutes stolen or lost property, the victim or the person that lost the thing may demand the return of that thing from the possessor within two years from the time of the loss or theft.


Article 643
A mandate becomes effective when a first party asks a second party with performing a juridical act, and the second party accepts this.
Article 656
The provisions of this Section apply mutatis mutandis to entrustments of business that do not constitute juridical acts..


Article 97
(1) A manifestation of intention becomes effective at the time notice thereof reaches the other party.
(2) If the other party prevents notice of a manifestation of intention from reaching them without a legitimate reason, the notice is deemed to have reached that party at the time it would have normally reached them.
(3) The effect of a manifestation of intention is not impaired even if the person making it dies, loses mental capacity, or becomes subject to restrictions on their legal capacity to act after having sent the notice..
