Prosecution Insights
Last updated: October 04, 2026
Application No. 18/856,345

STABILIZED SPIKE PROTEIN AND METHOD OF USE THEREOF AS A CORONAVIRUS DISEASE 2019 (COVID-19) VACCINE

Non-Final OA §112
Filed
Oct 11, 2024
Priority
Apr 11, 2022 — provisional 63/329,687 +1 more
Examiner
GRIZER, CASSANDRA SENN
Art Unit
Tech Center
Assignee
Daniel Kulp
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
1y 1m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
6 granted / 8 resolved
+15.0% vs TC avg
Strong +19% interview lift
Without
With
+18.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
41 currently pending
Career history
49
Total Applications
across all art units

Statute-Specific Performance

§101
5.9%
-34.1% vs TC avg
§103
44.1%
+4.1% vs TC avg
§102
11.3%
-28.7% vs TC avg
§112
32.0%
-8.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 8 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 . Priority Acknowledgement is made of Applicants’ claim for benefit to prior filed US Provisional application 63/329,687 (filed 04/11/2022). Claim Status Claims 1-20 are pending, all of which have been examined on the merits. Claim Objections Claims 4-5, 8, 13-15, and 20 objected to because of the following informalities: “a stabilized spike antigen” in claim 4 (line 1) should read “the stabilized spike antigen”; “a stabilized spike antigen” in claim 5 (lines 1-2) should read “the stabilized spike antigen”; “a nucleic acid molecule” in claim 8 (line 1) should read “the nucleic acid molecule”; “a stabilized spike antigen” in claim 13 (lines 1-2) should read “the stabilized spike antigen”; “a stabilized spike antigen” in claim 14 (line 1) should read “the stabilized spike antigen”; “a stabilized spike antigen” in claim 15 (line 1) should read “the stabilized spike antigen”; “an immunogenic composition” in claim 20 (line 2) should read “the immunogenic composition”. Appropriate correction is required. Claim Rejections - 35 USC § 112 Claim 3 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The phrase “a sequence as set forth in” in claim 3 (lines 1-2) is indefinite. One of ordinary skill would not be able to reasonably ascertain the invention. For purposes of compact prosecution and applying prior art, the claim was broadly interpreted to require a stabilized spike antigen comprising the amino acid sequence of SEQ ID NO: 4. For example, “the sequence comprises SEQ ID NO: 4” (claim 3, lines 1-2). In is noted that any interpretation of the claims set forth above does not relieve Applicant of the responsibility of responding to this rejection. If the actual interpretation of the claims is different than that posited by the Examiner, additional rejections and art may be readily applied in a subsequent final Office action. Allowable Subject Matter Claims 1-2, 6-12, and 16-19 are allowed. Claims 4-5, 8, 13-15, and 20 are allowed subject to the objections above. Conclusion CLAIMS 1-2, 6-12, AND 16-19 ARE ALLOWED. CLAIMS 4-5, 8, 13-15, AND 20 ARE ALLOWED SUBJECT TO THE OBJECTIONS ABOVE. CLAIM 3 IS REJECTED. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Cassandra Senn Grizer whose telephone number is (571)272-2292. The examiner can normally be reached M-Th 0630 - 1700 ET. 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 J. 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. /CASSANDRA SENN GRIZER/Examiner, Art Unit 1672 /THOMAS J. VISONE/Supervisory Patent Examiner, Art Unit 1672
Read full office action

Prosecution Timeline

Oct 11, 2024
Application Filed
Sep 21, 2026
Non-Final Rejection mailed — §112 (current)

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Study what changed to get past this examiner. Based on 3 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
75%
Grant Probability
94%
With Interview (+18.8%)
3y 1m (~1y 1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 8 resolved cases by this examiner. Grant probability derived from career allowance rate.

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