TMEP § 819.02(f)
For trademark and service mark applications, the application must include a verified statement that meets the requirements of 37 C.F.R. §2.33, dated and signed by a person properly authorized to sign on behalf of the applicant pursuant to 37 C.F.R. §2.193(e)(1). 37 C.F.R. §2.22(a)(9).
For collective trademark, collective service marks, and collective membership mark applications, the application must include a verified statement that meets the requirements of 37 C.F.R. §2.44, dated and signed by a person properly authorized to sign on behalf of the applicant pursuant to 37 C.F.R. §2.193(e)(1). See id.
For certification mark applications, the application must include a verified statement that meets the requirements of 37 C.F.R. §2.45, dated and signed by a person properly authorized to sign on behalf of the applicant pursuant to 37 C.F.R. §2.193(e)(1). See id.
If the application includes a signed verification, the insufficient information fee will not be required if a substitute verification is later submitted. See 37 C.F.R. §2.22(b). To provide a signature, the applicant has the option of: (1) the signatory personally entering any combination of letters, numbers, spaces, and/or punctuation marks that the signatory has adopted as a signature, placed between two forward slash ("/") symbols in the electronic application form (37 C.F.R. §2.193(c)(1) ); (2) the signatory signing the verified statement in the traditional pen-and-ink manner, and attachment of an image file of the signed document to the electronic application form; (3) the signatory signing the verified statement as set forth in the USPTO’s pdf signature page with an electronic signature generated used document signing software that meets the requirements of TMEP §611.01(c)(ii), and attachment of an image file of the signed document to the electronic application form; or (4) completing the application online and emailing it to the signatory for electronic signature and automatic return via the trademark electronic filing system to the party who requested the signature. See TMEP §611.01(c).
If the applicant elects to attach a verified statement, the insufficient information fee will be required if the attachment: