Prosecution Insights
Last updated: April 19, 2026
Application No. 17/794,786

COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING HEPATITIS B AND D

Final Rejection §102§DP
Filed
Jul 22, 2022
Examiner
ZOU, NIANXIANG
Art Unit
1671
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Svf Vaccines AB
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
2y 8m
To Grant
88%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allow Rate
483 granted / 751 resolved
+4.3% vs TC avg
Strong +24% interview lift
Without
With
+23.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
49 currently pending
Career history
800
Total Applications
across all art units

Statute-Specific Performance

§101
5.7%
-34.3% vs TC avg
§103
35.8%
-4.2% vs TC avg
§102
18.6%
-21.4% vs TC avg
§112
24.5%
-15.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 751 resolved cases

Office Action

§102 §DP
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 . DETAILED ACTION Acknowledgement is hereby made of receipt and entry of the communication filed on Aug. 29, 2025. Claims 50-69 are pending and currently examined. Claim Rejections - 35 USC § 102/103 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)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102 of this title, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. (Previous Rejection – Maintained) Claims 50-69 are rejected under 35 U.S.C. 102/103 as being unpatentable over Sallberg et al. (WO 2017/132332 A1, published on Aug. 3, 2017; submitted in IDS filed on Jul. 22, 2022). Applicant argues that claim 50 is amended to recite a “prime dose” and “at least one boost dose”, that Sallberg provides no teaching or suggestion of a prime dose, which is a nucleic acid and at least one boost dose, which is a polypeptide, and that, thus, the anticipation rejection of the present claims cannot maintain. Applicant argues that the amended claims read upon a product combination that works unexpected well at inhibiting hepatitis B and/or hepatitis D infection and the skilled person reviewing Sallberg would not have had a reasonable expectation of arriving at the now claimed product composition, as well. Applicant’s arguments are not persuasive. The claims are directed to a “product combination” comprising components (a) a nucleic acid and (b) a polypeptide. Referring them by different terms does not change the structure and/or properties of the components. Applicant’s arguments about unexpected results are not considered as germane to the current rejection since the results mentioned by applicants are related to a process of immunizing a subject with the claimed components rather than to the “combination” of the components themselves. Double Patenting Rejection 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 claims at issue 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); and 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 a nonstatutory double patenting ground provided the reference application or patent either is shown to be commonly owned with this 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 §§ 706.02(l)(1) - 706.02(l)(3) 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 USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/forms/. The 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 http://www.uspto.gov/patents/process/file/efs/guidance/eTD-info-I.jsp. (Previous Rejection – Maintained) Claims 50-69 are rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1-20 of US Patent 10905760 B2 alone or in view of Sallberg et al. (WO 2017/132332 A1, published on Aug. 3, 2017; submitted in IDS filed on Jul. 22, 2022), cited in the art rejection above. (Previous Rejection – Maintained) Claims 50-69 are rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims 1-14 of US Patent 11478544 B2 in view of Sallberg et al. (WO 2017/132332 A1, published on Aug. 3, 2017; submitted in IDS filed on Jul. 22, 2022), cited in the art rejection above. Applicant argues that none of the claims of 10905760 B2 or 11478544 B2 encompass a product combination for use in the inhibition of hepatitis B or hepatitis D, comprising: (a) a prime dose comprising a nucleic acid and (b) a boost dose comprising a polypeptide. Applicant’s arguments are not persuasive for the same reason as presented in the response in the 103 rejection above. Conclusion No claims are allowed. 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 extension fee 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 NIANXIANG (NICK) ZOU whose telephone number is (571)272-2850. The examiner can normally be reached on Monday - Friday, 8:30 am - 5:00 pm, EST. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, JANET ANDRES, on (571) 272-0867, can be reached. 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. /NIANXIANG ZOU/ Primary Examiner, Art Unit 1671
Read full office action

Prosecution Timeline

Jul 22, 2022
Application Filed
Feb 15, 2023
Response after Non-Final Action
May 14, 2025
Non-Final Rejection — §102, §DP
Aug 29, 2025
Response Filed
Sep 16, 2025
Final Rejection — §102, §DP (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
64%
Grant Probability
88%
With Interview (+23.8%)
2y 8m
Median Time to Grant
Moderate
PTA Risk
Based on 751 resolved cases by this examiner. Grant probability derived from career allow rate.

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