611.03(f) Amendment, Correction, or Surrender of Registration
A request for correction or amendment of a registration or a surrender of a registration must be signed by the individual owner of the registration, someone with legal authority to bind a juristic owner, or a qualified practitioner. In the case of joint owners who are not represented by a qualified practitioner, all must sign. 37 C.F.R. §§2.171(a), 2.173(b)(2), 2.175(b)(2), and 2.193(e)(6).