403.02 Two Patent Practitioners for Same Application [R-11.2013]
If the applicant simultaneously appoints two patent practitioners, applicant should indicate with whom correspondence is to be conducted by specifying a correspondence address. See MPEP §§ 403, 403.01(a), and MPEP § 403.01(b).
If, after one patent practitioner is appointed, a second patent practitioner is later appointed without revocation of the power of the first patent practitioner, correspondence will be mailed to the latest correspondence address of record. See 37 CFR 1.33 and 1.76