Prosecution Insights
Last updated: April 19, 2026
Application No. 17/194,761

METHOD FOR INDUCING ALVEOLAR EPITHELIAL PROGENITOR CELLS

Non-Final OA §101
Filed
Mar 08, 2021
Examiner
LANKFORD JR, LEON B
Art Unit
1657
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Kyoto University
OA Round
5 (Non-Final)
70%
Grant Probability
Favorable
5-6
OA Rounds
3y 12m
To Grant
99%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allow Rate
496 granted / 714 resolved
+9.5% vs TC avg
Strong +31% interview lift
Without
With
+30.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 12m
Avg Prosecution
34 currently pending
Career history
748
Total Applications
across all art units

Statute-Specific Performance

§101
6.6%
-33.4% vs TC avg
§103
39.4%
-0.6% vs TC avg
§102
16.4%
-23.6% vs TC avg
§112
25.8%
-14.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 714 resolved cases

Office Action

§101
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 1/16/26 has been entered. Applicant's arguments filed 1/16/26 have been fully considered but they are not persuasive. The claims remain rejected for the reasons of record. Claim 19 is considered in this action, not withdrawn. Applicant has amended the claims to indicate that the cells are now required to be “a sheet.” Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. The claimed invention is directed to a judicial exception (i.e., a law of nature, a natural phenomenon, or an abstract idea) without significantly more. Claim(s) 1-2, 4-11, 17, 19, 21 & 25 are directed to a naturally occurring cell population. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception. The claims are drawn to a composition of matter. The claims are drawn to a natural phenomenon, namely the occurrence in nature of a cell population predominately comprising alveolar epithelial or alveolar epithelial cells which are CPM positive. The specification (and at least claim 2) indicates that the cells are isolated from a subject by selecting for CPM. The markers claimed all are inherent properties of the cells and used to identify the cell as such. The specification contains no evidence, that the culturing of the cells imparts characteristics markedly different from those cells as they exist and function in nature. As such, there is no evidence that the claimed population or composition of the population has any characteristics (structural, functional, or otherwise) that are different from the naturally occurring cells and molecules. The limitation “sheet” describing the cells has been introduced to the claims but the claims still requirement nothing more than the cells per se and whether the cells form a sheet or not would not appear to make the cells markedly different from the natural cells especially because the specification merely indicates that (p 31) cells “are formed into a sheet” and there is no indication what the parameters of such a sheet are. The broadest reasonable interpretation of “sheet” absent an explicit definition could be any simple linear array of the cells and that would not appear to be different from the product of nature. Even if there would be considered to be an actual difference, said difference would not appear to be markedly different in that the cells can be isolated and/or manipulated in vitro as in culturing and the cells per se not differ markedly from the product of nature absent and showing to the contrary. For these reasons, the claimed invention does not appear to have markedly different characteristics from what occurs in nature and is a “product of nature” exception. Accordingly, the claim is directed to an exception. The claimed invention does not include any additional features that could add significantly more to the exception, so the claim does not qualify as eligible subject matter. Concluding the analysis, the claimed invention is drawn to a judicial exception to the statute and must be rejected as ineligible under 35 USC101. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BLAINE LANKFORD whose telephone number is (571)272-0917. The examiner can normally be reached M-Th 8-6:30. 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, Louise Humphrey can be reached on 571-272-5543. 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. BLAINE LANKFORD Examiner Art Unit 1657 /BLAINE LANKFORD/Primary Examiner, Art Unit 1657
Read full office action

Prosecution Timeline

Mar 08, 2021
Application Filed
Apr 21, 2023
Non-Final Rejection — §101
Oct 25, 2023
Response after Non-Final Action
Oct 25, 2023
Response Filed
Nov 02, 2023
Applicant Interview (Telephonic)
Nov 02, 2023
Examiner Interview Summary
Feb 09, 2024
Final Rejection — §101
Jul 09, 2024
Response after Non-Final Action
Jul 09, 2024
Request for Continued Examination
Jul 13, 2024
Response after Non-Final Action
Jul 25, 2024
Non-Final Rejection — §101
Nov 21, 2024
Applicant Interview (Telephonic)
Nov 21, 2024
Examiner Interview Summary
Jan 29, 2025
Response Filed
Apr 19, 2025
Final Rejection — §101
Oct 22, 2025
Request for Continued Examination
Oct 24, 2025
Response after Non-Final Action
Nov 04, 2025
Response after Non-Final Action
Jan 16, 2026
Response after Non-Final Action
Feb 07, 2026
Non-Final Rejection — §101 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Mar 31, 2026
Patent 12590954
NEURAL STEM CELL-INDUCED DIFFERENTIAL MEDIUM AND INDUCTION DIFFERENTIATION METHOD
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Patent 12590951
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2y 5m to grant Granted Mar 31, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
70%
Grant Probability
99%
With Interview (+30.6%)
3y 12m
Median Time to Grant
High
PTA Risk
Based on 714 resolved cases by this examiner. Grant probability derived from career allow rate.

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