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).