Prosecution Insights
Last updated: July 17, 2026
Application No. 18/005,936

A CHEMICAL COCKTAIL DRIVING EXPANSION OF MYOGENIC STEM CELLS

Non-Final OA §102
Filed
Jan 18, 2023
Priority
Jul 29, 2020 — provisional 63/058,254 +2 more
Examiner
AMICK, THOMAS RUSSE
Art Unit
1638
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Regents of the University of California
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
67 granted / 92 resolved
+12.8% vs TC avg
Strong +31% interview lift
Without
With
+31.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
15 currently pending
Career history
111
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
55.4%
+15.4% vs TC avg
§102
23.4%
-16.6% vs TC avg
§112
6.3%
-33.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 92 resolved cases

Office Action

§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 . Status of the Claims Claims 1-18 are pending. Claims 1-5, and 11-18 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected Groups, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 2/18/2026 Election/Restrictions Applicant's election with traverse of the restriction requirement of 11/19/2025 in the reply filed on 2/18/2026 is acknowledged. The traversal is on the grounds that the subject matter of each of the claim groups is linked by an inventive concept, and as a result a search of the prior art would be so related that separate search efforts would not be necessary. This is not found persuasive because Applicant has effectively argued that there would be a lack of a search burden on the examiner. In response, the examiner respectfully notes that search burden is not an issue herein, since the instant case is a 371 national stage entry of a PCT case, and search burden is only applicable in restriction practice for applications which enter under, for example, 35 U.S.C. 111. See also, MPEP §801, which explicitly states that, “applications entering the National Stage under 35 U.S.C. 371 as a Designated or Elected Office in the U.S. Patent and Trademark Office is covered in Chapter 1800.” Wherein Chapter 1800, and specifically, 1893.03 (d), clearly states that, “Examiners are reminded that unity of invention (not [US] restriction practice pursuant to 37 CFR 1.141 -1.146)) practice is applicable …in national stage applications submitted under 35 U.S.C. 371.” (Emphasis added). Therefore, an argument for rejoining groups on an alleged lack of undue search burden is not persuasive. The requirement is still deemed proper and is therefore made FINAL. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 6-10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by: Hochedlinger (US20190161731A1) (Provided in IDS of 8/22/2025). Regarding claim 6, Hochedlinger teaches a composition of matter (Hochedlinger [0005]) comprising a mammalian cell culture media (Hochedlinger [0008]), wherein the cell culture media comprises a supplement comprising forskolin and RepSox (Hochedlinger [0080-0081]). Hochedlinger teaches a method of deriving expandable myogenic stem cells (which they refer to as induced myogenic progenitor cells iMPC) from different somatic tissues (Hochedlinger [0065], [0230])). Hochedlinger teaches a method of generating induced Myogenic Progenitor Cells (iMPCs) (i.e., myogenic stem cells), comprising treating a population of somatic cells obtained from a subject with cyclic AMP agonist, and a TGF-β inhibitor for a time and under conditions that induce dedifferentiation of the somatic cells to a population of cells comprising iMPCs. Hochedlinger teaches that in one embodiment, the somatic cells may be fibroblasts, and that the cyclic AMP agonist may be forskolin, and that the TGF-β inhibitor may be RepSox. (Hochedlinger [0006]). Hochedlinger teaches that the somatic cells may include muscle cells or fibroblasts (Hochedlinger [0050]). Hochedlinger anticipates claim 6. Regarding claim 7, Hochedlinger teaches that their resulting iMPCs overexpress MyoD by at least a 20% compared to control after at least 4 days as compared to control. (Hochedlinger, [0025] FIG. 2E, 3B) Regarding claim 8, Hochedlinger teaches that in various embodiments, the method further comprises culturing the somatic cells and/or population of cells comprising iMPCs with ascorbic acid. (Hochedlinger [0011]). Hochedlinger teaches that ascorbic acid is an important vitamin in the generation of their progenitor-like cell population, i.e., enhances the induction of the iMPC. (Hochedlinger [0229]). Regarding claim 9 and 10, Hochedlinger contemplates the treatment of acute or chronic muscle injury (Hochedlinger [0103]). Hochedlinger teaches in various embodiments, the iMPC cell composition can be administered intramuscularly by injection, and that artificially prepared tissues produced by expansion and differentiation of iMPCs in culture, alone or in conjunction with other cells and/or a scaffold comprising extracellular materials that can be implanted at a desired site intradermally, intramuscularly, or subcutaneously. (i.e., disposing the expanded iMPC at a site of injury in vivo) (Hochedlinger [0107]). Conclusion Claims 6-10 are rejected. 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

Jan 18, 2023
Application Filed
Mar 27, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12674142
HYDROGEL COMPOSITIONS AND METHODS OF USE THEREOF
3y 2m to grant Granted Jul 07, 2026
Patent 12668763
CO-CULTURING DEVICE, MOTOR NEURON CULTURING DEVICE, MULTI-WELL PLATE, FABRICATION METHOD OF IN VITRO EVALUATION MODEL OF NEUROMUSCULAR DISEASE, AND SCREENING METHOD OF THERAPEUTIC AGENT AGAINST NEUROMUSCULAR DISEASE
4y 10m to grant Granted Jun 30, 2026
Patent 12617837
COMPOSITION FOR USE IN TREATMENT OF ALLERGIC DISEASES
4y 8m to grant Granted May 05, 2026
Patent 12611427
TREATMENT OF NSCLC PATIENTS REFRACTORY FOR ANTI-PD-1 ANTIBODY
4y 12m to grant Granted Apr 28, 2026
Patent 12606630
CD25 CHIMERIC ANTIGEN RECEPTORS AND USES THEREOF
4y 1m to grant Granted Apr 21, 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

1-2
Expected OA Rounds
73%
Grant Probability
99%
With Interview (+31.0%)
3y 11m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 92 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