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402 Power of Attorney - 400 Representative of Inventor or Owner


402 Power of Attorney

37 CFR 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 attorney or agent who shall also then be of record.


Powers of attorney or authorizations of agent naming firms of attorneys or agents filed in patent applications will not be recognized. However, the U.S. Patent and Trademark Office will construe any such powers or authorizations as a direction to consider the address of the firm as the correspondence address for the application.

Powers of attorney and authorizations of agent under 37 CFR 1.34(b) naming one or more registered individuals, or all registered practitioners associated with a Customer Number, may be made. See MPEP § 403 for Customer Number practice.

For a power of attorney or authorization of agent to be valid, the attorney or agent appointed must be registered to practice before the U.S. Patent and Trademark Office in accordance with 37 CFR 10.6. Form PTO/SB/81 may be used to appoint a registered practitioner.

Form PTO/SB/81 Power of Attorney or Authorization of agent

In accordance with 37 CFR 1.34(a), a paper filed by a registered patent attorney or agent in an application in which he or she is not of record should include both his or her signature and registration number. Acceptance of papers filed in patent applications and reexamination proceedings by registered attorneys and agents upon a representation that the attorney or agent is authorized to act in a representative capacity is for the purpose of facilitating replies on behalf of applicants in patent applications and, further, to obviate the need for filing powers of attorney or authorizations of agent in individual applications or patents when there has been a change in composition of law firms or corporate patent staffs. Interviews with a registered attorney or agent not of record will, in view of 35 U.S.C. 122, be conducted only on the basis of information and files supplied by the attorney or agent. A person acting in a representative capacity may not sign a power of attorney or a document granting access to an application.

A power of attorney or authorization given to a registered Canadian patent agent, to be valid, must be given by the applicants, all of whom are located in Canada. See 37 CFR 10.6(c).

When an application for patent is filed accompanied by a power of attorney or authorization of agent to a person not registered to practice before the United States Patent and Trademark Office, the Office of Initial Patent Examination will send the official filing receipt directly to the applicant, together with an explanatory letter. A copy of the letter will be sent to the person named in the power or authorization and a copy placed in the file without being given a paper number. The name of the unregistered person will not be placed on either the face of the file or the PALM bib-data sheet and the examiner will communicate only with the applicant directly at the correspondence address specified by the applicant unless and until the applicant appoints a recognized practitioner. An associate power of attorney or authorization from the unregistered person will not be recognized or accepted.

Form paragraph 4.09 may be used to notify applicant that the attorney or agent is not registered.


¶ 4.09 Unregistered Attorney or Agent

An examination of this application reveals that applicant has attempted to appoint an attorney or agent who is not registered to practice before the U.S. Patent and Trademark Office, contrary to the Code of Federal Regulations, 37 CFR 1.31. Therefore, the appointment is void, ab initio. We will not recognize the appointment and all correspondence concerning this application must be signed by: 1) all named applicants (inventors), 2) all the owners of the rights to the invention, or 3) a registered attorney or agent duly appointed by the inventor(s) or the owner(s). Furthermore, all communications from the Office will be addressed to the first named inventor, unless specific instructions to the contrary are supplied bythe named inventor(s) or owner(s).

While an applicant may prosecute the application, lack of skill in this field usually acts as a liability in affording the maximum protection for the invention disclosed. Applicant is, therefore, encouraged to secure the services of a registered patent attorney or agent (i.e., registered to practice before the U.S. Patent and Trademark Office) to prosecute the application, since the value of a patent is largely dependent upon skillful preparation and prosecution.

The Office cannot aid you in selecting a registered attorney or agent, however, we do have a publication which lists all the patent attorneys and agents who are registered to practice before the Office. The publication, "Attorneys and Agents Registered to Practice Before the U.S. Patent and Trademark Office," may be purchased from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. In addition, applicant may obtain this information: from the USPTO Internet Web Site [http://www.uspto.gov/]; by writing to the Commissioner of Patents and Trademarks, Box OED, Washington, DC 20231; by calling the Office of Enrollment and Discipline at (703) 306-4097; or, through the Patent Assistance Center toll free number, 1(800)786-9199.

Examiner Note

This form paragraph is to be used ONLY after ensuring that the named representative is not registered with the Office. A PALM inquiry should be first made and if no listing is given, the Office of Enrollment and Discipline should be contacted to determine the current "recognition" status of the individual named by the applicant in a "power of attorney." If the named individual is NOT registered or otherwise recognized by the Office, the correspondence address on the face of the file should be promptly changed to that of the first named inventor unless applicant specifically provides a different "correspondence address." A copy of the Office communicationincorporating this form paragraph should also be mailed to the unregistered individual named by the applicant in the "power of attorney." If desired, you may include with your communication, a list of the registered practitioners from applicant's Zip Code copied from the above noted publication which should be available in the TC Director's Office.

See MPEP § 601.03 for change of correspondence address. See MPEP § 201.06(c) for change in the power of attorney in continuation or divisional applications filed under 37 CFR 1.53(b). See MPEP § 403 for the addition and/or deletion of a practitioner from the list of practitioners associated with a Customer Number. For a representative of a requester of reexamination, see MPEP § 2213.

37 CFR 10.18 Signature and certificate for correspondence filed in the Patent and Trademark Office.

(a) For all documents filed in the Office in patent, trademark, and other non-patent matters, except for correspondence that is required to be signed by the applicant or party, each piece of correspondence filed by a practitioner in the Patent and Trademark Office must bear a signature, personally signed by such practitioner, in compliance with § 1.4(d)(1) of this chapter.

(b) By presenting to the Office (whether by signing, filing, submitting, or later advocating) any paper, the party presenting such paper, whether a practitioner or non-practitioner, is certifying that-

(1) All statements made therein of the party's own knowledge are true, all statements made therein on information and belief are believed to be true, and all statements made therein are made with the knowledge that whoever, in any matter within the jurisdiction of the Patent and Trademark Office, knowingly and willfully falsifies, conceals, or covers up by any trick, scheme, or device a material fact, or makes any false, fictitious or fraudulent statements or representations, or makes or uses any false writing or document knowing the same to contain any false, fictitious or fraudulent statement or entry, shall be subject to the penalties set forth under 18 U.S.C. 1001, and that violations of this paragraph may jeopardize the validity of the application or document, or the validity or enforceability of any patent, trademark registration, or certificate resulting therefrom; and

(2) To the best of the party's knowledge, information and belief, formed after an inquiry reasonable under the circumstances, that -

(i) The paper is not being presented for any improper purpose, such as to harass someone or to cause unnecessary delay or needless increase in the cost of prosecution before the Office;

(ii) The claims and other legal contentions therein are warranted by existing law or by a nonfrivolous argument for the extension, modification, or reversal of existing law or the establishment of new law;

(iii) The allegations and other factual contentions have evidentiary support or, if specifically so identified, are likely to have evidentiary support after a reasonable opportunity for further investigation or discovery; and

(iv) The denials of factual contentions are warranted on the evidence, or if specifically so identified, are reasonably based on a lack of information or belief.

(c) Violations of paragraph (b)(1) of this section by a practitioner or non-practitioner may jeopardize the validity of the application or document, or the validity or enforceability of any patent, trademark registration, or certificate resulting therefrom. Violations of any of paragraphs (b)(2)(i) through (iv) of this section are, after notice and reasonable opportunity to respond, subject to such sanctions as deemed appropriate by the Commissioner, or the Commissioner's designee, which may include, but are not limited to, any combination of -

(1) Holding certain facts to have been established;

(2) Returning papers;

(3) Precluding a party from filing a paper, or presenting or contesting an issue;

(4) Imposing a monetary sanction;

(5) Requiring a terminal disclaimer for the period of the delay; or

(6) Terminating the proceedings in the Patent and Trademark Office.

(d) Any practitioner violating the provisions of this section may also be subject to disciplinary action. See § 10.23(c)(15).


37 CFR 10.18(a) emphasizes that every paper filed by a practitioner must be personally signed by the practitioner, except those required to be signed by the applicant or party. 37 CFR 10.18(b) provides that, by presenting any paper to the Office, the party presenting such paper (whether a practitioner or nonpractitioner) is: (1) certifying that the statements made therein are subject to the declaration clause of 37 CFR 1.68; and (2) making the certifications required for papers filed in a federal court under Rule 11(b) of the Federal Rules of Civil Procedure. See MPEP § 410. 37 CFR 10.18(d) provides that any practitioner violating the provisions of 37 CFR 10.18 may also be subject to disciplinary action (see 37 CFR 10.23(c)(15)), thus clarifying that a practitioner may be subject to disciplinary action in lieu of, or in addition to, the sanctions set forth in 37 CFR 10.18(c) for violations of 37 CFR 10.18. See also 37 CFR 1.4(d)(2).

The certifications in 37 CFR 10.18(b) apply to all papers filed in the Office, including allegations of improper conduct made by a registered practitioner in any Office proceeding.

37 CFR 10.11 Removing names from registers.

(a) Registered attorneys and agents shall notify the Director of any change of address. Any notification to the Director of any change of address shall be separate from any notice of change of address filed in individual applications.

(b) A letter may be addressed to any individual on the register, at the address of which separate notice was last received by the Director, for the purpose of ascertaining whether such individual desires to remain on the register. The name of any individual failing to reply and give any information requested by the Director within a time limit specified will be removed from the register and the names of individuals so removed will be published in the Official Gazette. The name of any individual so removed may be reinstated on the register as may be appropriate and upon payment of the fee set forth in § 1.21(a)(3) of this subchapter.


See also MPEP § 1702.

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