[Code of Federal Regulations] [Title 37, Volume 1] [Revised as of July 1, 1999] From the U.S. Government Printing Office via GPO Access [CITE: 37CFR1.34] [Page 30-31] TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS CHAPTER I--PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE PART 1--RULES OF PRACTICE IN PATENT CASES--Table of Contents Subpart B--National Processing Provisions Sec. 1.34 Recognition for representation. (a) When a registered attorney or agent acting in a representative capacity appears in person or signs a paper in practice before the Patent and Trademark Office in a patent case, his or her personal appearance or signature shall constitute a representation to the Patent and Trademark Office that under the provisions of this subchapter and the law, he or she is authorized to represent the particular party in whose behalf he or she acts. In filing such a paper, the registered attorney or agent should specify his or her registration number with his or her signature. Further proof of authority to act in a representative capacity may be required. (b) When an attorney or agent shall have filed his or her power of attorney, or authorization, duly executed by the person or persons entitled to prosecute an application or a patent involved in a reexamination proceeding, he or she is a principal attorney of record in the case. A principal attorney or agent, so appointed, may appoint an associate [[Page 31]] attorney or agent who shall also then be of record. [46 FR 29181, May 29, 1981, as amended at 50 FR 5171, Feb. 6, 1985]