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Article 166Extinctive Prescription of Claims

第百六十六条(債権等の消滅時効)

A claim is extinguished by prescription in the following cases:

債権は、次に掲げる場合には、時効によって消滅する。

if the obligee does not exercise the right within five years from the time when the obligee came to know that it was exercisable; or

債権者が権利を行使することができることを知った時から五年間行使しないとき。

if the obligee does not exercise the right within 10 years from the time when it became exercisable.

権利を行使することができる時から十年間行使しないとき。

A claim or property right other than ownership is extinguished by prescription if not exercised within 20 years from the time when the right became exercisable.

債権又は所有権以外の財産権は、権利を行使することができる時から二十年間行使しないときは、時効によって消滅する。

The provisions of the preceding two paragraphs do not preclude the commencement of acquisitive prescription for the benefit of a third party that possesses the subject matter of a right with a time of commencement or a right subject to a condition precedent, at the time of commencing the possession; provided, however, that the holder of the right may demand acknowledgment from the possessor at any time to renew the prescription period.

前二項の規定は、始期付権利又は停止条件付権利の目的物を占有する第三者のために、その占有の開始の時から取得時効が進行することを妨げない。ただし、権利者は、その時効を更新するため、いつでも占有者の承認を求めることができる。

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