Prosecution Insights
Last updated: April 19, 2026
Application No. 18/032,545

FUSION PROTEIN AND VACCINE

Non-Final OA §102§112
Filed
Apr 18, 2023
Examiner
BOESEN, AGNIESZKA
Art Unit
1672
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Research Foundation For Microbial Diseases Of Osaka University
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
90%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allow Rate
555 granted / 816 resolved
+8.0% vs TC avg
Strong +22% interview lift
Without
With
+22.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
31 currently pending
Career history
847
Total Applications
across all art units

Statute-Specific Performance

§101
6.9%
-33.1% vs TC avg
§103
31.6%
-8.4% vs TC avg
§102
20.7%
-19.3% vs TC avg
§112
21.3%
-18.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 816 resolved cases

Office Action

§102 §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 . Applicant’s preliminary amendment filed on April 18, 2023 is acknowledged. Claims 1-9 are pending and under examination in this Office action. Information Disclosure Statement The information disclosure statement (IDS) submitted on November 25, 2024 and April 18, 2023 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. 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. Claim 4 is rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 4 recites “A fusion protein that is used as a vaccine antigen and comprising an antigen of a virus and/or bacterium and an antigen against which a vaccinated subject has antibodies in a body.” The claim is rejected because Applicant’s specification lacks written description support for the entire genus of fusion proteins encompassed by the present claims. The claims are drawn to a large genus of vaccine antigens comprising any viral or bacterial antigen. Applicant’s specification contemplates vaccine compositions comprising receptor-binding domain (RBD) of SARS-CoV-2 and influenza virus hemagglutinin. Applicant’s specification fails to provide written description support of the entire genus of viral and bacterial antigens encompassed by the present claim 4. Additionally, the recitation of “used” is interpreted as intended use that fails to limit the claimed product. Correction is required. Thus, the present claims are rejected for lack of written description support. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-9 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by OOstvogels et al. (US Patent Application Publication US 2022/0211838). OOstvogels et al. teach a vaccine composition comprising a fusion protein comprising a receptor-binding domain (RBD) of SARS-CoV-2 and influenza virus hemagglutinin (see paragraph [0102], [0186], [0215, 0216], claims 1-30). Regarding present claim 2. OOstvogels et al. teach hemagglutinin protein that is H1, type, H3 type, H5 type or H7 type (see paragraph [0704] The at least one influenza A virus may be selected from influenza A viruses characterized by a hemagglutinin (HA) selected from the group consisting of H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16, H17 and H18. Preferably the influenza A virus is selected from an Influenza virus characterized by a hemagglutinin (HA) selected from the group consisting of H1, H3, H5, H7, H9, or H10). Regarding present claim 3. OOstvogels et al. teach methods of treating a subject having SARS-CoV-2 infection (see paragraph [1477], and [1520-1526]). Regarding present claim 4. OOstvogels et al. teach administering the vaccine in a subject infected with the SARS-CoV-2 (see [1520-1526]. However, the intended use of the claimed composition is not considered limiting. Regarding present claim 6. OOstvogels et al. teach an optional adjuvant (see paragraph [0712]). Regarding present claims 7-9. OOstvogels et al. teach methods of eliciting an immune response, comprising administering the vaccine comprising a fusion protein comprising a receptor-binding domain (RBD) of SARS-CoV-2 and influenza virus hemagglutinin y injection and intranasally (see paragraph [1444-1452]). A vast majority of the population has been infected with and has antibodies against the influenza virus and for the is reason the limitations of claim 7 are inherently anticipated by the disclosure of OOstvogels et al. Thus, by this disclosure OOstvogels et al. anticipate the present claims. Pertinent references Kim et al. (EBioMedicine, May 2020, p. 1-12) teaches corona virus vaccines. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to AGNIESZKA BOESEN whose telephone number is (571)272-8035. The examiner can normally be reached on 8:30 - 5:00 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 on 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 an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /AGNIESZKA BOESEN/Primary Examiner, Art Unit 1648
Read full office action

Prosecution Timeline

Apr 18, 2023
Application Filed
Dec 27, 2025
Non-Final Rejection — §102, §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
68%
Grant Probability
90%
With Interview (+22.5%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 816 resolved cases by this examiner. Grant probability derived from career allow rate.

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