Prosecution Insights
Last updated: October 02, 2026
Application No. 17/831,638

CELLS EXPRESSING C-KIT MUTATIONS AND USES THEREOF

Non-Final OA §112
Filed
Jun 03, 2022
Priority
Dec 03, 2019 — provisional 62/943,032 +1 more
Examiner
AMICK, THOMAS RUSSE
Art Unit
1638
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Memorial Hospital For Cancer And Allied Diseases
OA Round
2 (Non-Final)
73%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
76 granted / 104 resolved
+13.1% vs TC avg
Strong +30% interview lift
Without
With
+30.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
15 currently pending
Career history
119
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
38.8%
-1.2% vs TC avg
§102
25.1%
-14.9% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 104 resolved cases

Office Action

§112
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 . Status of the Claims The following Office Action is in response to Applicant’s communication dated 12/31/2025. Claims 1, 3, 12, 19, 22, 27, 29, 37, 42, 47, 54-57, 60, 62-64, and 70 are pending. Claim 1 is amended. Rejections and/or objections not reiterated from previous office actions are hereby withdrawn. The following rejections and/or objections are either reiterated or newly applied. They constitute the complete set presently being applied to the instant application. This action is a second non-final rejection to address newly-applied 112(a) rejections. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claim 1, 3, 12, 19, 22, 27, 29, 37, 42, 47, 54-57, 60, 62-64, and 70 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claims 1, 37, and 42 recite the limitation of “ a mutant of c-Kit comprising an activating mutation”. The specification recites that “In certain embodiments, the activating mutation is a gain-of-function mutation. In certain embodiments, the activating mutation is a mutation whose gene product consists of an enhanced effect as compared to a gene product without such mutation (e.g., the wild-type protein).” And that “The activating mutation of c-Kit promotes proliferation and anti-apoptosis of cells comprising the c-Kit mutant. The activating mutation of c-Kit makes cells comprising the c-Kit mutant resistant to PD-L1/2-PD-1 inhibition.” (Specification [0120, 122]). However, the only actual examples of such a mutation appear to be those species of mutation recited in claim 3. The specification describes certain desired features of a potential mutation, but with over 900 amino acids comprising cKit there potentially several million or more potential mutations, which would require exhaustive experimentation for the skilled artisan to effectively discover. That is, the disclosed species of c-Kit mutations in the specification do not reasonably convey to the skilled artisan that the applicant was in possession of every mutation of c-Kit that could ever exist that would result in the claimed desired activating feature. Claim 3 is similarly rejected, but only due to the limitation od item (i), “is within the intracellular region of human c-Kit”. Again, there are no specific mutations recited in this limitation, and even if this region were a handful of amino acids in length, there would still be hundreds, thousands, or millions of possible mutations available to choose from, exponentially increasing with the addition of each amino acid in the intracellular region. All claims dependent on claim 1, 37, and 42 (3, 12, 19, 22, 27, 29, 47, 54-57, 60, 62-64, and 70 are rejected for being dependent on claim 1. A suggested remedy for this rejection would be to import the specific mutations listed in claim 3 which are supported in the specification, namely limitations (ii-vii), and not limitation (i). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to THOMAS RUSSE AMICK whose telephone number is (571)272-5474. The examiner can normally be reached 7:30-5 M-F. 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, Tracy Vivlemore can be reached at (571) 272-2914. 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. /THOMAS R. AMICK/Examiner, Art Unit 1638 /Tracy Vivlemore/Supervisory Primary Examiner, Art Unit 1638
Read full office action

Prosecution Timeline

Jun 03, 2022
Application Filed
Jul 01, 2025
Non-Final Rejection mailed — §112
Dec 31, 2025
Response Filed
Apr 16, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12742184
METHODS FOR MANUFACTURING GENETICALLY ENGINEERED CAR-T CELLS
4y 1m to grant Granted Sep 22, 2026
Patent 12741025
Genetically Engineered Phagocytes, and Related Compositions, Vectors, Methods and Systems
3y 11m to grant Granted Sep 22, 2026
Patent 12735681
FILTRATION-BASED SYSTEMS AND METHODS FOR ISOLATION OF CLUSTERED PARTICLES
4y 9m to grant Granted Sep 15, 2026
Patent 12714756
ISOLATED MODIFIED AAV9 CAPSID PROTEIN VP1
2y 6m to grant Granted Aug 25, 2026
Patent 12703735
METHODS AND COMPOSITIONS FOR ENGINEERING CD4-DEFICIENT CAR T CELLS AND ANTI-CD4 CAR T CELLS AND USES THEREOF
4y 11m to grant Granted Aug 11, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

2-3
Expected OA Rounds
73%
Grant Probability
99%
With Interview (+30.4%)
3y 11m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 104 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month