Prosecution Insights
Last updated: April 19, 2026
Application No. 17/303,133

METHODS OF ENHANCING FIBROBLAST THERAPEUTIC ACTIVITY

Non-Final OA §DP
Filed
May 20, 2021
Examiner
BARRON, SEAN C
Art Unit
1653
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Spinalcyte LLC
OA Round
4 (Non-Final)
53%
Grant Probability
Moderate
4-5
OA Rounds
3y 8m
To Grant
85%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allow Rate
323 granted / 605 resolved
-6.6% vs TC avg
Strong +32% interview lift
Without
With
+31.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
68 currently pending
Career history
673
Total Applications
across all art units

Statute-Specific Performance

§101
6.2%
-33.8% vs TC avg
§103
43.6%
+3.6% vs TC avg
§102
16.0%
-24.0% vs TC avg
§112
22.4%
-17.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 605 resolved cases

Office Action

§DP
DETAILED ACTION 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 allowance or after an Office action under Ex Parte Quayle, 25 USPQ 74, 453 O.G. 213 (Comm'r Pat. 1935). 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, prosecution in this application has been reopened pursuant to 37 CFR 1.114. Applicant's submission filed on 9/30/2025 has been entered. Status of Claims Claims 1, 11-15, and 17 are currently pending and under consideration in the merits. Double Patenting 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. Claims 1, 11-15, and 17 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 4, 5, 7-11, and 13 of U.S. Patent No. US 11,034,934 (Reference A). Although the claims at issue are not identical, they are not patentably distinct from each other because claims 1, 4, and 5 of the ‘934 patent are directed towards a method of generating regenerative fibroblasts comprising the step of contacting fibroblasts with platelet-rich plasma and one or more biologically active substances, thereby generating regenerative fibroblasts having improved immune modulation activity compared to fibroblasts that lack said contact, wherein the one or more biologically active substances comprise FGF-alpha or FGF-beta. The claims of the ‘934 patent only differ from instant claim 1 by claiming FGF-alpha and FGF-beta separately as alternatives and not in-combination, but combining separate steps and/or components taught as useful in a method into a singular method must be held as prima facie obvious, as each step is taught separately useful for the same purpose. See In re Kerkhoven, 626 F.2d 846, 850, 205 USPQ 1069, 1072 (CCPA 1980). Absent any persuasive showing of non-obviousness to the contrary, instant claim 1 must be rejected as prima facie obvious over claims 1, 4, and 5 of the ‘934 patent. Claims 7-11 of the ‘934 patent read on instant claims 11-15, respectively. Claim 13 of ‘934 patent reads on instant claim 17 in view of the obvious rationale set forth above. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SEAN C BARRON whose telephone number is (571)270-5111. The examiner can normally be reached 7:30am-3:30pm EDT/EST (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, Sharmila Landau can be reached at 571-272-0614. 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. /Sean C. Barron/Primary Examiner, Art Unit 1653
Read full office action

Prosecution Timeline

May 20, 2021
Application Filed
Jun 21, 2023
Non-Final Rejection — §DP
Dec 26, 2023
Response Filed
Jan 24, 2024
Final Rejection — §DP
Jul 18, 2024
Request for Continued Examination
Jul 24, 2024
Response after Non-Final Action
Oct 29, 2024
Non-Final Rejection — §DP
Apr 30, 2025
Response Filed
Sep 30, 2025
Request for Continued Examination
Oct 03, 2025
Response after Non-Final Action
Feb 10, 2026
Non-Final Rejection — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12584906
COATING AGENT FOR INDUCING DIFFERENTIATION OF PLURIPOTENT STEM CELLS INTO BRAIN MICROVASCULAR ENDOTHELIUM-LIKE CELLS AND USE THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12558424
T CELLS HAVING ENHANCED ANTI-TUMOR ACTIVITY
2y 5m to grant Granted Feb 24, 2026
Patent 12550890
SYSTEM AND METHOD FOR MAINTAINING ORGAN VIABILITY
2y 5m to grant Granted Feb 17, 2026
Patent 12551511
METHODS TO DIFFERENTIATE STEM CELLS INTO HORMONE-PRODUCING CELLS
2y 5m to grant Granted Feb 17, 2026
Patent 12544407
FIBROBLAST CELL THERAPY FOR TREATMENT OF OSTEOPOROSIS
2y 5m to grant Granted Feb 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
53%
Grant Probability
85%
With Interview (+31.6%)
3y 8m
Median Time to Grant
High
PTA Risk
Based on 605 resolved cases by this examiner. Grant probability derived from career allow rate.

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