Article 299Restrictions on Arguing Lack of Jurisdiction of the Court of First Instance
第二百九十九条（第一審の管轄違いの主張の制限）
In the second instance, the parties may not argue that the court of first instance did not have jurisdiction; provided, however, that this does not apply with regard to exclusive jurisdiction (excluding that which is determined by agreement between the parties pursuant to the provisions of Article 11).
控訴審においては、当事者は、第一審裁判所が管轄権を有しないことを主張することができない。ただし、専属管轄（当事者が第十一条の規定により合意で定めたものを除く。）については、この限りでない。
If the court of first instance referred to in the preceding paragraph is the court specified in any of the items of Article 6, paragraph (1), and the litigation is subject to the exclusive jurisdiction of another court pursuant to the provisions of Article 6, paragraph (1), the provisions of the proviso to the preceding paragraph do not apply.