Prosecution Insights
Last updated: September 26, 2026
Application No. 18/664,161

CLAUDIN 18.2 T CELL-ANTIGEN COUPLERS AND USES THEREOF

Non-Final OA §DP
Filed
May 14, 2024
Priority
Jun 01, 2021 — provisional 63/202,211 +4 more
Examiner
SZPERKA, MICHAEL EDWARD
Art Unit
Tech Center
Assignee
Triumvira Immunologics Usa Inc.
OA Round
1 (Non-Final)
63%
Grant Probability
Moderate
1-2
OA Rounds
8m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allowance Rate
596 granted / 949 resolved
+2.8% vs TC avg
Strong +37% interview lift
Without
With
+36.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
53 currently pending
Career history
989
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
20.2%
-19.8% vs TC avg
§102
16.8%
-23.2% vs TC avg
§112
33.4%
-6.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 949 resolved cases

Office Action

§DP
DETAILED ACTION 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 preliminary amendment received July 29, 2024 is acknowledged. Claims 1-126 have been canceled. Claims 127-140 have been added. Claims 127-140 are pending in the instant application. Information Disclosure Statement The IDS forms received 5/14/2024 are acknowledged and the references cited therein have been considered. 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 127-140 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-18 of U.S. Patent No. 12,016,923. Although the claims at issue are not identical, they are not patentably distinct from each other because the issued claims anticipate that which is presently claimed. It should be noted that the application which matured into the ‘923 patent is the parent of the instant application related as a continuation and as such all SEQ ID numbers and their underlying biological sequences are necessarily identical. Additionally, no restriction requirement was set forth during the prosecution of the parent application. The issued claims recite TAC that bind Claudin 18.2 and comprises a polypeptide of SEQ ID NO:73, as well as nucleic acids, host cells including gamma delta T cells, and methods of administering such cells to treat cancer (see all issued claims, most notably claim 7). It should be noted that the instant claimed polynucleotide sequence of SEQ ID NO:72 (i.e. instant claim 129) encodes the polypeptide of SEQ ID NO:73. Given that SEQ ID NO:73 (as well as issued claim 1) includes additional TAC domains including a CD3 binding domain and CD4 coreceptor domain while instant claim 127 recites a generic TAC with a specific VHH sequence defined by SEQ ID numbers, the issued claims are necessarily of narrower scope than that which applicant is presently claims. Thus the issued claims anticipate the broader scope of the inventions as presently recited. No claims are allowable. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Szperka whose telephone number is (571)272-2934. The examiner can normally be reached Monday-Friday 8:30-5:00. 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. Michael Szperka Primary Examiner Art Unit 1641 /MICHAEL SZPERKA/Primary Examiner, Art Unit 1641
Read full office action

Prosecution Timeline

May 14, 2024
Application Filed
Sep 09, 2026
Examiner Interview (Telephonic)
Sep 18, 2026
Non-Final Rejection mailed — §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

1-2
Expected OA Rounds
63%
Grant Probability
99%
With Interview (+36.8%)
3y 0m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 949 resolved cases by this examiner. Grant probability derived from career allowance rate.

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