609.02 Changing the Correspondence Address
Once the correspondence address is established, the USPTO will generally send correspondence to that address until a written request to change the address is submitted, signed by the practitioner whom the USPTO has recognized, or, if the applicant or registrant is not represented by a qualified practitioner, by the individual applicant or registrant or someone with legal authority to bind a juristic applicant or registrant (e.g., a corporate officer or general partner of a partnership). 37 C.F.R. §§2.18(b)(2) and 2.193(e)(9)–2.193(e)(9)(ii).
The mere transmittal of a response to an Office action bearing a new address does not effect a change in a correspondence address, except when a new owner takes an action in an application or registration (e.g., files a response to an Office action or statement of use) after recordation of a change of ownership, as discussed in TMEP §609.02(f).
The USPTO will not undertake double correspondence with the applicant or registrant and the applicant’s or registrant’s qualified practitioner, or with more than one qualified practitioner. 37 C.F.R. §2.18(a)(6). However, if the applicant or the applicant’s qualified practitioner authorizes the USPTO to send official communications by e-mail, the applicant or the applicant’s qualified practitioner may designate one primary e-mail address and up to four secondary e-mail addresses for duplicate courtesy copies of the correspondence. See TMEP §403 regarding treatment of outgoing e-mail correspondence that is returned as undeliverable.
A written request to change the correspondence address does not revoke a power of attorney. 37 C.F.R. §§2.18(a)(7) and 2.19(a)(3). See TMEP §606 regarding revocation.
See also TBMP §§117–117.08 for information about correspondence in Board proceedings.