Prosecution Insights
Last updated: July 17, 2026
Application No. 18/341,960

METHOD FOR PRODUCING INFLUENZA HA SPLIT VACCINE

Non-Final OA §112§DP
Filed
Jun 27, 2023
Priority
Sep 04, 2017 — JP 2017-169230 +3 more
Examiner
BLUMEL, BENJAMIN P
Art Unit
1671
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Japan AS Represented By Director General Of National Institute Of Infectious Diseases
OA Round
4 (Non-Final)
71%
Grant Probability
Favorable
4-5
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
732 granted / 1035 resolved
+10.7% vs TC avg
Strong +31% interview lift
Without
With
+30.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
46 currently pending
Career history
1077
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
51.6%
+11.6% vs TC avg
§102
6.8%
-33.2% vs TC avg
§112
21.6%
-18.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1035 resolved cases

Office Action

§112 §DP
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 invention I in the reply filed on 7/23/24 is acknowledged. Claims 20 and 21 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 7/23/24. Claims 8, 10, 12-18 and 22-25 are examined on the merits and are allowed. Information Disclosure Statement The information disclosure statement (IDS) submitted on 4/16/26 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 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. (Prior Rejection withdrawn in view of amendment) Claims 26-29 are 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. (New Rejection) Claims 17, 18, 24 and 25 are 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. Claims 17 and 18 depend from claim 9, which is cancelled. Therefore it is unclear what claim claims 17 and 18 are attempting to further limit. Claims 24 and 25 depend from claim 17, but do not remedy this deficiency. The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. (New Rejection) Claims 17, 18, 24 and 25 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claims 17 and 18 depend from claim 9, which is cancelled and claims 24 and 25 depend from claim 17. Therefore these claims do not further limit another claim.. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Terminal Disclaimer The terminal disclaimer filed on 1/22/26 disclaiming the terminal portion of any patent granted on this application which would extend beyond the expiration date of U.S. Patent 11732031 has been reviewed and is accepted. The terminal disclaimer has been recorded. Examiner Initiated Interview On April 29th, 2026, the examiner contacted applicants to propose the filing of a terminal disclaimer over U.S. Patent 12,491,240 in order to avoid a double patenting rejection and allow the instant application. Applicants asked that an office action be mailed with the double patenting rejection presented for consideration. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. (New Rejection) Claims 8, 10, 12-16 and 22-23 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-22 of U.S. Patent No. 12,491,240. Although the claims at issue are not identical, they are not patentably distinct from each other because the patented invention is drawn to a method of producing influenza HA split vaccine. Specifically, the HA to be produced can be part of a split vaccine that comprises HA from H3N2 or H1N1 influenza A viruses. The method involves the treating of influenza virus particles with ether to obtain an influenza HA split vaccine. This vaccine is also subjected to an acidic treatment (pH of 4.4 to 5.8). The method also requires that formalin is not used in the production of the split vaccine. The resulting influenza HA split vaccine generates a long alpha helix (LAH) of a HA stem region which can produce antibodies specific for it. The patented method also produces a membrane fusion-type HA split vaccine, thus exposing the HA stem region and the method achieves an LAH that is capable of generating a binding to an influenza HA split vaccine. Therefore, the patented method anticipates the instant invention since it would create the presently claimed membrane fusion-type influenza HA split vaccine since the product by process limitations of claims 8 and 13 and the pH treatment ranges of claims 15, 22 and 23 of the instant invention are the same as those claimed in the patent. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BENJAMIN P BLUMEL whose telephone number is (571)272-4960. The examiner can normally be reached on M-F 8-5 EST. 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, Michael Allen can be reached on (571) 270-3497. 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 https://ppair-my.uspto.gov/pair/PrivatePair. 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. /BENJAMIN P BLUMEL/Primary Examiner, Art Unit 1648
Read full office action

Prosecution Timeline

Show 2 earlier events
Feb 26, 2025
Response Filed
Jul 14, 2025
Final Rejection mailed — §112, §DP
Oct 14, 2025
Request for Continued Examination
Oct 16, 2025
Response after Non-Final Action
Nov 17, 2025
Non-Final Rejection mailed — §112, §DP
Jan 22, 2026
Response Filed
Apr 29, 2026
Examiner Interview (Telephonic)
Jun 03, 2026
Non-Final Rejection mailed — §112, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12661322
NOVEL MULTIVALENT NANOPARTICLE-BASED VACCINES
2y 3m to grant Granted Jun 23, 2026
Patent 12644101
NOVEL ADENO-ASSOCIATED VIRUS (AAV) CLADE F VECTOR AND USES THEREFOR
2y 7m to grant Granted Jun 02, 2026
Patent 12636358
RECOMBINANT NON-STRUCTURAL PROTEIN 1, RECOMBINANT INFLUENZA VIRUS AND IMMUNOLOGICAL COMPOSITION INCLUDING THE SAME, AND METHOD OF TREATING OR PREVENTING DISEASE OR CONDITION CAUSED BY OR ASSOCIATED WITH INFLUENZA VIRUS
4y 5m to grant Granted May 26, 2026
Patent 12622963
MICROMOLDED OR 3-D PRINTED PULSATILE RELEASE VACCINE FORMULATIONS
2y 4m to grant Granted May 12, 2026
Patent 12605439
UNIVERSAL INFLUENZA VACCINE COMPOSITIONS
4y 3m to grant Granted Apr 21, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
71%
Grant Probability
99%
With Interview (+30.7%)
3y 1m (~1m remaining)
Median Time to Grant
High
PTA Risk
Based on 1035 resolved cases by this examiner. Grant probability derived from career allowance rate.

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