Prosecution Insights
Last updated: April 19, 2026
Application No. 17/935,605

In-vivo Continuous Directed Evolution System and Application Thereof

Non-Final OA §102
Filed
Sep 27, 2022
Examiner
BOESEN, CHRISTIAN C
Art Unit
1684
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Jiangnan University
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
3y 8m
To Grant
97%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
463 granted / 616 resolved
+15.2% vs TC avg
Strong +22% interview lift
Without
With
+21.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
22 currently pending
Career history
638
Total Applications
across all art units

Statute-Specific Performance

§101
8.5%
-31.5% vs TC avg
§103
28.8%
-11.2% vs TC avg
§102
18.1%
-21.9% vs TC avg
§112
25.4%
-14.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 616 resolved cases

Office Action

§102
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 . DETAILED ACTION This Non-Final Office Action is responsive to the communication received 12/23/2025. Election/Restrictions Applicant’s election without traverse in the Reply filed on 12/23/2025 of group II, claims 11-13 is acknowledged. Applicant has elected without traverse in the Reply filed on 12/23/2025 the following species: A. the mutagenic genes on the random mutation module mutagenesis plasmid is an encoding gene AID of a cytosine deaminase The Restriction/Election Requirements are deemed proper and are made FINAL. Claims 1-13 are pending. Claims 1-10 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the Reply filed on 12/23/2025. Claims 11-13 are under examination in this Office Action. 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. Claims 11-13 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Liu et al. (10/22/2020) US Patent Application Publication 2020/0332282 A1 cited in the 12/02/2022 IDS (hereinafter known as "Liu"). With regards to claims 11-13, Liu teaches: a) as in claims 11-13, a method of continuous directed evolution of genes, comprising transforming a continuous directed evolution system, comprising a random mutation module mutagenesis plasmid, a programmed death module toxin-antitoxin system and a target gene expression module target plasmid, wherein the random mutation module mutagenesis plasmid comprises mutagenic genes and helper genes, the target gene expression module target plasmid comprises target genes and helper gene recognition or binding elements, and the programmed death module toxin-antitoxin system comprises toxin protein encoding genes and antitoxic protein encoding genes to microbial cells, and the microbial cells comprises Escherichia coli; wherein the mutagenic genes on the random mutation module mutagenesis plasmid comprise an encoding gene AID of a cytosine deaminase; comprising inducing the microbial cells by virtue of inducers, inducing the random mutation module mutagenesis plasmid to express mutagenic proteins, inducing the target gene expression module target plasmid to express target proteins, inducing the programmed death module toxin-antitoxin system to express proteins assisting in recognition or binding and toxin proteins, and adding corresponding substrates according to different target proteins; comprising transforming the induced microbial cells and continuously culturing in a culture medium containing inducers (see Figures 2 and 3 and [0007] to [0084]). Thus, Liu anticipates the present claims. Conclusion No claim is allowed. Any inquiry concerning this communication or earlier communications from the Examiner should be directed to Christian Boesen whose telephone number is 571-270-1321. The Examiner can normally be reached on Monday-Friday 9:00 AM to 5:00 PM. If attempts to reach the Examiner by telephone are unsuccessful, the Examiner’s supervisor, Heather Calamita can be reached at 571-272-2876. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. 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 . /CHRISTIAN C BOESEN/Primary Examiner, Art Unit 1684
Read full office action

Prosecution Timeline

Sep 27, 2022
Application Filed
Feb 07, 2026
Non-Final Rejection — §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

1-2
Expected OA Rounds
75%
Grant Probability
97%
With Interview (+21.9%)
3y 8m
Median Time to Grant
Low
PTA Risk
Based on 616 resolved cases by this examiner. Grant probability derived from career allow rate.

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