Prosecution Insights
Last updated: October 01, 2026
Application No. 18/606,343

METHODS OF BOOSTING AN IMMUNE RESPONSE AGAINST HIV USING COMMENSAL MICROBE ANTIGENS

Non-Final OA §112
Filed
Mar 15, 2024
Priority
Mar 16, 2023 — provisional 63/490,661
Examiner
KINSEY WHITE, NICOLE ERIN
Art Unit
Tech Center
Assignee
Vanderbilt University
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
8m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
509 granted / 876 resolved
-1.9% vs TC avg
Strong +16% interview lift
Without
With
+16.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
34 currently pending
Career history
907
Total Applications
across all art units

Statute-Specific Performance

§101
3.6%
-36.4% vs TC avg
§103
33.0%
-7.0% vs TC avg
§102
15.9%
-24.1% vs TC avg
§112
30.9%
-9.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 876 resolved cases

Office Action

§112
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions Applicant’s election without traverse of the following species: i) claim 2, ii) claim 10, and iii) SEQ ID NO: 48 of claim 13 in the reply filed on 7/29/2026 is acknowledged. Status of the Claims Claims 3 and 6-8 have been withdrawn as being directed to a non-elected species. Claims 1-2, 4-5, and 9-20 are under examination at this time. Specification The use of trademarks has been noted in this application. A trademark should be capitalized wherever it appears and be accompanied by the generic terminology. Although the use of trademarks is permissible in patent applications, the proprietary nature of the marks should be respected and every effort made to prevent their use in any manner, which might adversely affect their validity as trademarks. Claim Objections Claim 18 is objected to because of the following informalities: Claim 18 should recite “wherein the commensal microbe antigen and the HIV antigen enhance[[s]] an immune response”. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-2, 4-5, and 9-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the specification, while being enabling for a method for enhancing an immune response against HIV Env by administering or priming with EF-Tu from Limosilactobacilius reuteri (L. reuteri) or Bacteroides thetaiotaomicron (B. thetaiotaomicron), does not reasonably provide enablement for a method for enhancing an immune response against an HIV antigen other than Env by administering or priming with a commensal microbe antigen other than EF-Tu from L. reuteri or B. thetaiotaomicron. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make/use the invention commensurate in scope with these claims. The claims are directed to a method of preventing an infection from a human immunodeficiency virus (HIV), the method comprising administering to a subject an effective amount of a first composition comprising a commensal microbe antigen and an effective amount of a second composition comprising an HIV antigen. There is one example demonstrating that animals primed with full length EF-Tu from L. reuteri or B. thetaiotaomicron elicited a greater/stronger antibody response to HIV-1 antigen RSC3, which mimics the CD4bs on the Env protein. However, there is no evidence that antigens other than EF-Tu from L. reuteri or B. thetaiotaomicron or antigens from commensal microbes other than from L. reuteri or B. thetaiotaomicron are capable of enhancing the HIV Env immune response. Additionally, there is no evidence that EF-Tu from L. reuteri or B. thetaiotaomicron can enhance the immune response against HIV antigens other than HIV Env. Further, there is no evidence that fragments of EF-Tu from L. reuteri or B. thetaiotaomicron can enhance the immune response against HIV Env. Given the breadth of the claims, the lack of guidance in the specification, and the lack of working examples demonstrating the prevention or inhibition of HIV infections, it would require undue experimentation for one skilled in the art to practice the claimed method. Claims 1-2, 4-5, and 9-19 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the enablement requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. The claims are directed to a method of preventing an infection from a human immunodeficiency virus (HIV), the method comprising administering to a subject an effective amount of a first composition comprising a commensal microbe antigen and an effective amount of a second composition comprising an HIV antigen. There is one example demonstrating that animals primed with EF-Tu elicited a greater/stronger antibody response to HIV-1 antigen RSC3, which mimics the CD4bs on the Env protein. However, there is no evidence that the greater/stronger antibody response can prevent or inhibit an HIV infection or even treat HIV. Given the breadth of the claims, the lack of guidance in the specification, and the lack of working examples demonstrating the prevention or inhibition of HIV infections, it would require undue experimentation for one skilled in the art to practice the claimed method. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Nicole Kinsey White whose telephone number is (571)272-9943. The examiner can normally be reached M to Th 6:30 am to 6:00 pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Thomas Visone can be reached at 571-270-0684. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /NICOLE KINSEY WHITE/Primary Examiner, Art Unit 1672
Read full office action

Prosecution Timeline

Mar 15, 2024
Application Filed
Sep 03, 2026
Non-Final Rejection mailed — §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
58%
Grant Probability
74%
With Interview (+16.4%)
3y 3m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 876 resolved cases by this examiner. Grant probability derived from career allowance rate.

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