Prosecution Insights
Last updated: September 17, 2026
Application No. 18/036,578

Media and methods for establishing and maintaining early embryo-like cells

Final Rejection §112
Filed
May 11, 2023
Priority
Nov 11, 2020 — nonprovisional of PCTCN2020128091
Examiner
MONTANARI, DAVID A
Art Unit
1632
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BGI GENOMICS CO., LTD.
OA Round
2 (Final)
65%
Grant Probability
Moderate
3-4
OA Rounds
5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allowance Rate
496 granted / 768 resolved
+4.6% vs TC avg
Strong +49% interview lift
Without
With
+49.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
49 currently pending
Career history
826
Total Applications
across all art units

Statute-Specific Performance

§101
4.8%
-35.2% vs TC avg
§103
36.6%
-3.4% vs TC avg
§102
13.5%
-26.5% vs TC avg
§112
33.8%
-6.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 768 resolved cases

Office Action

§112
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 . Applicant’s arguments and amendments filed on 5/4/2026 have been entered. Claims 1, 3, 4, 6, 8, 10 and 12 have been amended. Claims 40 and 41 are new. In view of Applicant’s amendments to the claims, the 112b rejections are withdrawn. In view of Applicant’s amendments to claim 1, the ODP, 102 and 103 are withdrawn. However, the new amendment would necessitate a new rejection under New Matter below. Claims 1, 3-5, 6, 8, 10-12, 40 and 41 are examined in the instant application. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1, 3-5, 6, 8, 10-12, 40 and 41 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. This is a new matter rejection. Applicants have amended claim 1 to recite that the culture medium is further supplemented with components group consisting of L-ascorbic acid or a derivative thereof, an activator of JAK/STAT3 signaling, an inhibitor of MAPK/ERK signaling and a tankyrase inhibitor. However, a review of the instant specification and originally filed claims provides no support for a culture medium that comprises a basal medium, an HDAC inhibitor and one or more of a PRC and EZH2 inhibitor and consists of a components group consisting of L-ascorbic acid or a derivative thereof, an activator of JAK/STAT3 signaling, an inhibitor of MAPK/ERK signaling and a tankyrase inhibitor. There is no teaching in the specification regarding a culture medium comprising the 3-4 components and consisting of the four components set forth in amended claim 1. If Applicant believes this rejection is in error they are invited to cite line and page number where the amended culture medium can be found in the specification. Conclusion No claims are allowed. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. 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 /ANOOP K SINGH/Primary Examiner, Art Unit 1632
Read full office action

Prosecution Timeline

May 11, 2023
Application Filed
Feb 05, 2026
Non-Final Rejection mailed — §112
May 04, 2026
Response Filed
Jul 29, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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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
COMPOSITIONS AND METHODS FOR INSECT CONTROL
5y 0m to grant Granted Aug 04, 2026
Patent 12692481
BACULOVIRUS EXPRESSION SYSTEM
6y 1m to grant Granted Jul 28, 2026
Patent 12669506
CANCER DETECTION METHOD USING SENSE OF SMELL OF NEMATODE
5y 2m to grant Granted Jun 30, 2026
Patent 12662657
UNIVERSAL DONOR STEM CELLS AND RELATED METHODS
2y 1m to grant Granted Jun 23, 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 (+49.1%)
3y 10m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 768 resolved cases by this examiner. Grant probability derived from career allowance rate.

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