Prosecution Insights
Last updated: October 04, 2026
Application No. 18/275,463

VACCINE AND METHODS FOR PREVENTING FILARIASIS AND DIROFILARIASIS

Final Rejection §112
Filed
Aug 02, 2023
Priority
Feb 03, 2021 — provisional 63/145,153 +1 more
Examiner
GANGLE, BRIAN J
Art Unit
1645
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Pai Life Sciences Inc.
OA Round
2 (Final)
77%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allowance Rate
733 granted / 956 resolved
+16.7% vs TC avg
Moderate +15% lift
Without
With
+14.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
44 currently pending
Career history
1000
Total Applications
across all art units

Statute-Specific Performance

§101
6.4%
-33.6% vs TC avg
§103
16.1%
-23.9% vs TC avg
§102
22.3%
-17.7% vs TC avg
§112
37.4%
-2.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 956 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 . Applicant’s amendment and remarks filed on 7/9/2026 are acknowledged. Claim 1 is amended. Claims 1-20 are pending. Election/Restrictions Claims 11-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Claims 1-10 are currently under examination. Objections Maintained The use of the trademark HIS TAG has been noted in this application in multiple places. It 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. It is noted that the cited occurrence of improper use is only exemplary and applicant should review the specification to correct any other use of trademarks. Applicant’s amendment is noted. However, as set forth in MPEP 608.01(v), each letter of the mark must be capitalized. In addition, the mark must be accompanied by the generic terminology. Claim Rejections Withdrawn The rejection of claims 1-4, 8, and 10 on the ground of nonstatutory double patenting as being unpatentable over claims 1-3 of U.S. Patent No. 10,072,054 is withdrawn in light of applicant’s amendment thereto. The rejection of claims 1-4, 8, and 10 under 35 U.S.C. 102(a)(1) as being anticipated by Kalyanasundaram et al (US Patent 10,072,054, 2018; IDS filed 8/28/2023) is withdrawn in light of applicant’s amendment thereto. Claim Rejections Maintained 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (B) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. The rejection of claims 1-10 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 pre-AIA the applicant regards as the invention is maintained for the reasons set forth in the previous office action. Claims not specifically mentioned are included because they contain the issue of the parent claim. Claim 1 is rendered indefinite by the recitation of the trademark His-tag. If a trademark or trade name is used in a claim as a limitation to identify or describe a particular material or product, the claim does not comply with the requirements of the 35 U.S.C. 112, second paragraph. Ex parte Simpson, 218 USPQ 1020 (Bd. App. 1982). The claim scope is uncertain since the trademark or trade name cannot be used properly to identify any particular material or product. Applicant argues: That the claim has been amended to read “His-tag”. Applicant’s arguments have been fully considered and are not persuasive for the following reasons: The term is still a trademark, which renders the claim indefinite. New Claim Rejections 35 USC § 112 The following is a quotation 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 35 U.S.C. 112 (pre-AIA ), first paragraph: 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 1-4, 6, and 8-10 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 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 pre-AIA the inventor(s), at the time the application was filed, had possession of the claimed invention. Applicant has amended claim 1 to recite “a linker between two or more of said antigens, wherein the linker comprises a glycine and/or serine.” This phrase does not appear in the specification or original claims as filed. Applicant points to paragraph 0014 of the instant specification as support for this amendment. However, said paragraph does not provide support for the actual limitation in the claims. The specification mentions linkers that are composed of glycine or serine or a combination thereof as well as a “glycine/serine linker,” which is a peptide linker that is composed primarily of glycine and serine. Neither of these definitions is equivalent in scope to a linker that “comprises a glycine and/or serine”. Therefore, this limitation is new matter. Conclusion No claim is allowed. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Brian J Gangle whose telephone number is (571)272-1181. The examiner can normally be reached M-F, 9-6:30. 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, Anne Gussow can be reached at 571-272-6047. 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. /BRIAN GANGLE/ Primary Examiner, Art Unit 1645
Read full office action

Prosecution Timeline

Aug 02, 2023
Application Filed
Apr 15, 2026
Non-Final Rejection mailed — §112
Jul 09, 2026
Response Filed
Sep 22, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

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

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Prosecution Projections

3-4
Expected OA Rounds
77%
Grant Probability
91%
With Interview (+14.7%)
2y 7m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 956 resolved cases by this examiner. Grant probability derived from career allowance rate.

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