Prosecution Insights
Last updated: September 17, 2026
Application No. 18/615,934

ANTI-PLASMA KALLIKREIN ANTIBODY DOSING REGIMENS FOR TREATING HEREDITARY ANGIOEDEMA

Final Rejection §DP
Filed
Mar 25, 2024
Priority
Dec 13, 2022 — provisional 63/387,187 +7 more
Examiner
CHEONG, CHEOM-GIL
Art Unit
1645
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Astria Therapeutics, Inc.
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
10m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
121 granted / 189 resolved
+4.0% vs TC avg
Strong +52% interview lift
Without
With
+52.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
34 currently pending
Career history
220
Total Applications
across all art units

Statute-Specific Performance

§101
3.1%
-36.9% vs TC avg
§103
24.3%
-15.7% vs TC avg
§102
16.1%
-23.9% vs TC avg
§112
37.5%
-2.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 189 resolved cases

Office Action

§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 . Claim Status Claims 2-4, 8, 11, 14-15, 17, 22, 25-26, 28-29, 30-33 and 37-39 were canceled. Claims 1, 5-7, 9-10, 12-13, 16, 18-21, 23-24, 27 and 34-36 are pending and under consideration. Withdrawn Rejections Objection of specification is withdrawn. Applicant amended the specification, thereby obviating this objection. Objection of claim 21 is withdrawn. Applicant amended the claim 21, thereby obviating this rejection/objection. Rejection of Claims 1, 5-7, 12, 18-21, 27, 29, 35 and 38 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or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention is withdrawn. Applicant amended the claims, thereby obviating this rejection/objection. Rejection of Claims 1, 5-7, 9-10, 12-13, 16, 18-21, 23-24, 27, 29, and 34-39 under 35 U.S.C. 103 as being unpatentable over Bedian et al (WO2022/165130) in view of Chyung et al (WO2015/112578) is withdrawn. Applicant provided a persuasive argument “Even if one of ordinary skill in the art had been motivated to investigate longer dosing intervals, nothing in either Bedian or Chyung teaches that the specific dosing regimen now claimed would maintain serum concentrations above the claimed threshold while simultaneously producing the dramatic reductions in HAE attack frequency or duration required by the claims.” (Applicant’s response, 7/27/2026, page 13). MAINTAINED - 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. Claims 1, 5-7, 9-10, 12-13, 16, 18-21, 23-24, 27 and 34-36 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1-251 of copending Application No. 19/134,598 (hereinafter application’598). Although the claims at issue are not identical, they are not patentably distinct from each other because of the following reasons. Regarding claims 1, 9, 18, 23-24, 27 and 34-36, claim 1 of application’598 claims “A method of treating a human subject having a plasma kallikrein associated disorder, comprising: administering a loading dose of 600-900 mg of an anti-plasma kallikrein antibody to the subject; and administering a maintenance dose of 150-450 mg of the anti-plasma kallikrein antibody to the subject beginning at least about 2 months after administering the loading dose and then at least about every 2 months thereafter; wherein the anti-plasma kallikrein antibody comprises: … iii) an immunoglobulin heavy chain comprising the amino acid sequence of SEQ ID NO:9 and a light chain comprising the amino acid sequence of SEQ ID NO: 10.” SEQ ID NO: 9 and 10 of application’598 is 100% identical to instant SEQ ID NO: 9 and 10, respectively (see SCV; result 1 of 9.rapm; result 1 of 10.rapm). Therefore, the antibody of application’598 is the same antibody with same sequence as instant claims. Claim 16 of application’598 claims that the loading dose is 600 mg. Claim 27 of application’598 claims that the maintenance dose is 300 mg. Claim 43 of application’598 claims that the maintenance dose is administered about three months after administering the loading dose and then about every three months thereafter. Therefore, application’598 claims same dosing regimen as instant claim 1. The limitation “reducing a monthly hereditary angioedema (HAE) attack rate experienced by a subject with HAE” and “wherein treating the subject with the anti-plasma kallikrein antibody according to the dosing regimen reduces the subject's monthly HAE attack rate by at least 85% for at least 3 months from initiation of the dosing regimen relative to the-subject's baseline monthly HAE attack rate prior to initiation of the dosing regimen” of instant claim 1 is expected result. Because application’598 claims same active process step using same antibody with same sequence as instant claims, the claims of application’598 will have same expected result as instant claims. Claim 130 of application’598 claims that the first dose, second dose, and any one or more subsequent doses are administered to the subject subcutaneously. Regarding claims 9, 18 and 23-24, wherein-clause of these claims describe different expected result, but claims same active process step as instant claim 1. As application’598 claims same active process step as instant claims, application’598 claims same claim as instant claims. Regarding claims 5-7, 10, 12-13, 16, and 19-21, these claims describe expected result of the active process step (i.e. administering anti-plasma kallikrein antibody). As discussed above, because application’598 claims same active process step using same antibody with same sequence as instant claims, the claims of application’598 will have same expected result as instant claims. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Response to Arguments In the response filed on 7/27/2026, Applicant argued at page 14, PNG media_image1.png 427 1308 media_image1.png Greyscale Applicant's arguments have been fully considered but they are not persuasive. Because same dosing regimen with same antibody will have same result, instant claims are not patentably distinct from claims of application’598. 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 CHEOM-GIL CHEONG whose telephone number is (571)272-6251. The examiner can normally be reached Monday - Friday 9:00 am - 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, Misook Yu can be reached at 571-272-0839. 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. /CHEOM-GIL CHEONG/Examiner, Art Unit 1645 /MISOOK YU/Supervisory Patent Examiner, Art Unit 1641
Read full office action

Prosecution Timeline

Mar 25, 2024
Application Filed
Apr 27, 2026
Non-Final Rejection mailed — §DP
Jul 27, 2026
Response Filed
Sep 01, 2026
Examiner Interview (Telephonic)
Sep 04, 2026
Final Rejection mailed — §DP (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

3-4
Expected OA Rounds
64%
Grant Probability
99%
With Interview (+52.4%)
3y 3m (~10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 189 resolved cases by this examiner. Grant probability derived from career allowance rate.

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