Manual of Patent Examining Procedure - MPEP

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400 Representative of Inventor or Owner

403.02 Two Attorneys for Same Application

If the applicant simultaneously appoints two principal attorneys, he or she should indicate with whom correspondence is to be conducted. If one is a local Washington metropolitan area attorney and the applicant fails to indicate either attorney, correspondence will be conducted with the local attorney.

If, after one attorney is appointed, a second attorney is later appointed without revocation of the power of the first attorney, the correspondence address of the second attorney is entered into the application file record (Ex parte Eggan, 1911 C.D. 213, 172 O.G. 1091 (Comm'r Pat. 1911)), so that the Office letters are to be sent to him or her.

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