1902.02(m) Email Address of Applicant
An international application must include the applicant's email address. Regs. Rule 9(4)(a)(ii). The email address also will be used for correspondence with the USPTO. 37 C.F.R. §§7.4(a), 7.11(a). But see 37 C.F.R. §7.4(c) (providing an exception to the requirement to correspond electronically with the Office for a filer who is a national of a country that has acceded to the Trademark Law Treaty, but not to the Singapore Treaty on the Law of Trademarks).
See TMEP §803.05(b) for more information regarding the requirement for an applicant’s email address.