当該送付の立証は、当該通知、出願その他の文書を封入した書簡が適切な住所を宛先として書留郵便により差出されたされたことの証明で足りるものとする。例文帳に追加

In proving such sending, it shall be sufficient to prove that the letter containing such notice, application or other document was properly addressed and sent by registered mail.発音を聞く  - 特許庁

(2) 前記の引渡しは，被請求人である当事者へ手交するか，当事者宛ての請求書若しくは書簡をその営業所，住所若しくは最後の住所として知られた場所へ差し置くか又は当事者宛てにそれを書留で郵送することによって，することができる。前記のとおり郵送するときは，それは，通常の郵送期間で配達される筈の時に引き渡されたものとみなす。例文帳に追加

(2) The delivery may be effected either by personal delivery to the party chargeable or by leaving the bill or letter for him at his place of business, or dwelling house, or last known place of abode, or by forwarding it to him by post in a registered letter addressed to him as aforesaid. Where it is forwarded by post as aforesaid, it shall be deemed to have been delivered at the time at which the letter would have been delivered in the ordinary course of post. - 特許庁