Prosecution Insights
Last updated: October 04, 2026
Application No. 17/836,165

OPTIMIZED CRISPR/CAS9 SYSTEMS AND METHODS FOR GENE EDITING IN STEM CELLS

Non-Final OA §DP
Filed
Jun 09, 2022
Priority
May 11, 2015 — provisional 62/159,785 +5 more
Examiner
MONTANARI, DAVID A
Art Unit
1632
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Editas Medicine Inc.
OA Round
3 (Non-Final)
65%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allowance Rate
499 granted / 771 resolved
+4.7% vs TC avg
Strong +49% interview lift
Without
With
+49.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
52 currently pending
Career history
827
Total Applications
across all art units

Statute-Specific Performance

§101
4.9%
-35.1% vs TC avg
§103
36.7%
-3.3% vs TC avg
§102
13.6%
-26.4% vs TC avg
§112
33.6%
-6.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 771 resolved cases

Office Action

§DP
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 5/5/2026 has been entered. Claims 1, 4, 11 and 23 have been amended. In view of Applicant’s amendments, the 112(b) rejection is withdrawn. In view of Applicant’s amendments, the previous ODP rejection is withdrawn and a new ODP rejection is set forth. Claims 1-15, 20, 21 and 23 are examined in the instant application. 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 1-15, 20, 21 and 23 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-16 of U.S. Patent No. 11,390,884 in view of Fares et al. (2013, Blood, Vol. 122(21), Abstract) and Boitano et al. (2010, Science, Vol. 329, pgs. 1345-1348). While the instantly claimed invention is drawn to using Stemregenin 1 (SR1) and the claims of ‘884 are drawn to using either rapamycin or UM171, it would have been obvious to use SR1 since the art teaches that SR1 and UM171 have the same effect preparing a stem cell for transplantation (see Fares). Particularly, Boitano teaches that expansion of stem cells does not occur until after 1-week after culturing stem cells with SR1 (see Fig. 1E). Thus, the instantly claimed methods and dependent claims fully encompass the invention of claims 1-16 of ‘884. It would have been obvious to use SR1 to prepare a stem cell for transplantation since it functions the same as UM171 for preparing a stem cell for transplantation. The instant application was filed as a CON and the court has found that safe harbor does not apply when the continuing application is filed as CON. The court found that safe harbor from an ODP rejection only applies when a continuing application is filed as a DIV. See AMGEN INC., v. F. HOFFMANN-LA ROCHE LTD. 580 F.3d l340; 2009 U.S. App, LEXIS 20409; 92 U.S.P.Q.2D (BNA) 1289. Response to Arguments Applicant’s Arguments Applicants argue in amendment that SR1 is structurally and functionally distinct from the rapamycin and UM171 of ‘884 and thus would not be obvious over their use. Examiner’ Response While Applicants argument has been fully considered it is not found persuasive since the art teaches above that SR1 and UM171 have similar effects for preparing a cell for transplantation. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID A MONTANARI whose telephone number is (571)272-3108. The examiner can normally be reached M-Tr 8-6. 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, Peter Paras can be reached at 571-272-4517. 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. /DAVID A MONTANARI/Examiner, Art Unit 1632
Read full office action

Prosecution Timeline

Jun 09, 2022
Application Filed
Mar 20, 2025
Non-Final Rejection mailed — §DP
Aug 20, 2025
Response Filed
Nov 05, 2025
Final Rejection mailed — §DP
May 05, 2026
Request for Continued Examination
May 06, 2026
Response after Non-Final Action
Aug 12, 2026
Non-Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12703854
IN VITRO METHOD OF DIFFERENTIATING A HUMAN PLURIPOTENT STEM CELL POPULATION INTO A CARDIOMYOCYTE CELL POPULATION
4y 11m to grant Granted Aug 11, 2026
Patent 12698310
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Patent 12692481
BACULOVIRUS EXPRESSION SYSTEM
6y 1m to grant Granted Jul 28, 2026
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
65%
Grant Probability
99%
With Interview (+49.0%)
3y 10m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 771 resolved cases by this examiner. Grant probability derived from career allowance rate.

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