Prosecution Insights
Last updated: October 25, 2026
Application No. 18/003,646

C825 EXPRESSING IMMUNE CELLS AND DIAGNOSTIC USES THEREOF

Non-Final OA §DP
Filed
Dec 28, 2022
Priority
Jun 29, 2020 — provisional 63/045,641 +1 more
Examiner
POPA, ILEANA
Art Unit
1633
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Memorial Sloan Kettering Cancer Center
OA Round
2 (Non-Final)
22%
Grant Probability
At Risk
2-3
OA Rounds
10m
Est. Remaining
37%
With Interview

Examiner Intelligence

Grants only 22% of cases
22%
Career Allowance Rate
184 granted / 849 resolved
-38.3% vs TC avg
Strong +16% interview lift
Without
With
+15.7%
Interview Lift
resolved cases with interview
Typical timeline
4y 8m
Avg Prosecution
48 currently pending
Career history
913
Total Applications
across all art units

Statute-Specific Performance

§101
2.3%
-37.7% vs TC avg
§103
48.1%
+8.1% vs TC avg
§102
7.7%
-32.3% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 849 resolved cases

Office Action

§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 . 1. Claims 2-5, 7-12, 14, 17-23, 25-50, 52-54, 56, 58-64, 66, 68, 69, and 72-75 have been cancelled. Claims 1, 6, 13, 15, 51, 55, 57, 65, 67, and 70 have been amended. Claim 76 is new. Claims 1, 6, 13, 15, 16, 24, 51, 55, 57, 65, 67, 70, 71, and 76 are pending and under examination. 2. All rejections/objections pertaining to claims 29, 30, 33, 34, 42, 43, 47 are moot because the claims were cancelled with the reply filed on 07/23/2026. The objections to claims 1, 51, 55, 57, 65, and 67 are withdrawn in response to the amendments filed on 07/23/2026. The rejection of claims 55, 57, 65, 67, 70, and 71 under 35 U.S.C. 112(b) is withdrawn in response to the amendment replacing the recitation “a reference value” with “non-tumor tissue”. The obviousness-type rejection set forth in the non-final Office action mailed on 03/12/2026 are withdrawn in response to the provided data evidencing that the claimed combination of anti-DOTA C823/ Proteus-DOTA provides superior results over anti-DOTA scFv/ acrylamidobenzoyl-DOTA taught by Krebs. New Rejections Double Patenting 3. 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. 4. Claims 1, 6, 13, 15, 16, 24, 51, 55, 57, 65, 67, 70, 71, and 76 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 50, 55-57, 64, 66, 69, and 70 of copending Application No. 18/003,645 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because both claim sets are drawn to: (1) the same engineered immune cell comprising a fusion protein between an anti-DOTA antigen binding fragment linked to a transmembrane domain (TM) or GPI anchor and a CAR directed to a target antigen; and (2) to the same methods (tracking/monitoring biodistribution/monitoring viability) by administering the engineered immune cell and the same radiolabeled DOTA hapten. By practicing the methods recited in the application claims, one of skill in the art would have obtained a complex as recited in the instant claim 51. As evidenced by the attached Sequence Alignments, SEQ ID NOs: 1 and 5 recited in the application claim 50 are identical to SEQ ID NOs: 35 and 36 recited in the instant claim 1. The application specification discloses that: the CAR is CD19 CAR; the CD19 scFv is set forth by SEQ ID NO: 27 or 28; the anti-DOTA antigen binding fragment/TM or GPI anchor fusion and the CD19 CAR are expressed as separate polypeptides (see [0026]; [0132]; Fig. 3). As evidenced by the attached Sequence Alignments, SEQ ID NOs: 27 and 28 are identical to SEQ ID NOs: 3 and 4 recited in the instant claim 16. The application claims 64 and 70 recite a method for tracking the engineered immune cells in a subject having cancer. One of skill in the art would have reasonably concluded that this method would result in result in the accumulation of the engineered immune cells in the tumors, i.e., in detecting tumors in the subject as recited in the instant claim 55. Thus, the instant claims and the application claims are obvious variants. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. 5. No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ILEANA POPA whose telephone number is (571)272-5546. The examiner can normally be reached 8:00 am to 4:30 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, Christopher Babic can be reached at 571-272-8507. 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. /ILEANA POPA/Primary Examiner, Art Unit 1633
Read full office action

Prosecution Timeline

Dec 28, 2022
Application Filed
Aug 28, 2023
Response after Non-Final Action
Mar 12, 2026
Non-Final Rejection mailed — §DP
Jul 23, 2026
Response Filed
Sep 30, 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

2-3
Expected OA Rounds
22%
Grant Probability
37%
With Interview (+15.7%)
4y 8m (~10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 849 resolved cases by this examiner. Grant probability derived from career allowance rate.

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