Prosecution Insights
Last updated: September 26, 2026
Application No. 18/565,253

CELL CULTURE SUPPLEMENT FOR PRODUCING STEM CELLS, AND METHOD FOR PRODUCING STEM CELLS

Final Rejection §101§102
Filed
Nov 29, 2023
Priority
May 31, 2021 — JP 2021-091262 +1 more
Examiner
BURKHART, MICHAEL D
Art Unit
1638
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Opticell Inc.
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
6m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
521 granted / 836 resolved
+2.3% vs TC avg
Moderate +12% lift
Without
With
+11.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
39 currently pending
Career history
872
Total Applications
across all art units

Statute-Specific Performance

§101
5.1%
-34.9% vs TC avg
§103
28.5%
-11.5% vs TC avg
§102
19.3%
-20.7% vs TC avg
§112
26.3%
-13.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 836 resolved cases

Office Action

§101 §102
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 . 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. Claims 8-11, 13, 14 are rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The claim(s) does/do not fall within at least one of the four categories of patent eligible subject matter because use claims are considered an improper definition of a process. The claims do not recite any active, positive method steps. See MPEP § 2173.05(q). This rejection affects all dependent claims. Therefore, the claims cannot be evaluated for examination purposes and the claims have not been further treated on the merits. Claim Objections Applicant is advised that should claim 1 be found allowable, claims 2 and 3 will be objected to under 37 CFR 1.75 as being a substantial duplicate thereof. When two claims in an application are duplicates or else are so close in content that they both cover the same thing, despite a slight difference in wording, it is proper after allowing one claim to object to the other as being a substantial duplicate of the allowed claim. See MPEP § 608.01(m). Claims 2 and 3 merely recite types of cells that may be modified by the composition of claim 1. Cells are not claimed as a component in claim 1, only the polypeptide is claimed. Thus, claims 2 and 3 do not alter the scope of claim 1 in any significant way. Applicant is advised that should claim 1 be found allowable, claim 5 will be objected to under 37 CFR 1.75 as being a substantial duplicate thereof. When two claims in an application are duplicates or else are so close in content that they both cover the same thing, despite a slight difference in wording, it is proper after allowing one claim to object to the other as being a substantial duplicate of the allowed claim. See MPEP § 608.01(m). Claim 5 merely recites a different intended use of the composition of claim 1, thus, claim 5 does not alter the scope of the claimed composition in any significant way. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-3, 5-7, 12 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yu et al (US 20080287342 A1, of record). Yu et al teach collagen mimetic peptides (CMP) that comprise (ProHypGly)n repeats, wherein one exemplified repeat is n=6. See the abstract, Figure 2 and ¶ [0009]. The instant claim limitations of “reprogramming agents” are intended use limitations at best and do not add further structure to the claimed polypeptide products. If a prior art structure is capable of performing the intended use as recited, then it meets the claim. See, e.g., In re Schreiber, 128 F.3d 1473, 1477, 44 USPQ2d 1429, 1431 (Fed. Cir. 1997). (MPEP 2111.02). Cells are not claimed as a component in claim 1, only the polypeptide is claimed. Thus, instant claims 2 and 3 do not alter the scope of claim 1 in any significant way. Claim 5 merely recites a different intended use of the composition of claim 1, thus, claim 5 does not alter the scope of the claimed composition. Yu et al teach cell culture substrates wherein the surface is treated with the polypeptide of claim 1 (Figure 7, ¶’s [0010], [0057], [0125]). Yu et al teach cell culture systems comprising the CMP polypeptides and somatic (fibroblasts) cells or cancer (MCF-7) cells (Figure 7, ¶’s [0178], [0257]). Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Burkhart whose telephone number is (571)272-2915. The examiner can normally be reached M-F 8-5. 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. /MICHAEL D BURKHART/Primary Examiner, Art Unit 1638
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Prosecution Timeline

Nov 29, 2023
Application Filed
Apr 08, 2026
Non-Final Rejection mailed — §101, §102
Jul 07, 2026
Response Filed
Sep 23, 2026
Final Rejection mailed — §101, §102 (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
62%
Grant Probability
74%
With Interview (+11.5%)
3y 4m (~6m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 836 resolved cases by this examiner. Grant probability derived from career allowance rate.

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