Prosecution Insights
Last updated: April 19, 2026
Application No. 18/689,218

DETACHMENT MECHANISM AND DELIVERY CATHETER

Non-Final OA §102
Filed
Mar 05, 2024
Examiner
GEDEON, BRIAN T
Art Unit
3796
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Jiangsu Trulive Medtech Co. Ltd.
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
94%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allow Rate
1158 granted / 1327 resolved
+17.3% vs TC avg
Moderate +7% lift
Without
With
+7.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
46 currently pending
Career history
1373
Total Applications
across all art units

Statute-Specific Performance

§101
4.3%
-35.7% vs TC avg
§103
40.2%
+0.2% vs TC avg
§102
23.2%
-16.8% vs TC avg
§112
13.2%
-26.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1327 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 . Priority This application is a national stage entry under 35 USC 371 of PCT/CN2022/112967 filed 17 August 2022 which claims the benefit of foreign priority from Chinese Application no. 202111681706.5 filed 29 December 2021. 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. Claim(s) 1-3, 8, 11, and 15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Liu et al. (US Patent no. 10,188,497). In regard to claim 1, Liu et al. disclose a detachment mechanism for enabling delivery and detachment of an implant 1, comprising a detacher 3 (lock 3 is considered equivalent to the detacher), a first control member 4 (control wire) and a second control member 11 (connecting wire) (col 4 lines 15-45), a distal end of the detacher 3 configured for engagement of the implant 1 therewith e.g. as shown in any of figures 3, 4 or 6-8, lock 3 is at distal end of catheter 5 and is configured to engage closure head 2 of implant 1), the detacher 3 defining a through hole 7 (col 4 lines 22-27, lock hole 7 defined in lock 3 is considered to comprise the claimed through hole, col 6 lines 46-49), the first control member 4 and the second control member 11 detachably engaged with or directly joined to each other (as shown in either of figures 3, 4, or 6-8), a distal end of the first control member 4 and a distal end of the second control member 11 configured to be inserted into the through hole (col 4 lines 25-27 and 42-47), wherein when the distal end of the first control member 11 and the distal end of the second control member 11 are passed through the through hole 7 and engaged with each other (col 4 lines 25-27 and 42-47), the first control member 4 and the second control member 11 are locked against the detacher, and wherein when the first control member is pulled (via control component 21), the first control member 4 is removed from the through hole 7 (col 7 lines 18-25), the second control member 11 is unlocked from the detacher 3 with the removal of the first control member 4, thereby detaching the first control member and the second control member from the detacher (col 5 lines 13-20). In regard to claim 2, wherein in Liu et al. the through hole 7 of the detacher 3 comprises a straight hole and an interconnected hole in communication with the straight hole 8/14 (col 6 lines 46-49, the hole 7 is designed as a through hole and necessarily comprises these structures, also see col 5 lines 53-60, the lock hole 7 is the interconnected hole and the inner cavity 8 and hole 14 is the straight hole, wherein element 4 moves through the cavity 8 and hole 14), wherein the distal end of the second control member 11 is inserted in the interconnected hole (figures 6-8), wherein the distal end of the first control member 4 is inserted in the straight hole 8, and wherein the first control member 4 and the second control member 11 are detachably engaged with each other at a location where the interconnected hole comes into communication with the straight hole (col 5 lines 53-60). In regard to claim 3, in Liu et al., the distal end of the second control member 11 defines a control hole, wherein the first control member 4 is passed through the control hole (col 4 lines 46-47), thereby engaging the first control member and the second control member with each other, and wherein when the first control member is removed from the control hole, the first control member and the second control member are disengaged from each other (this is shown in figures 6 and 7 where control wire 4 passes through connection wire 11). In regard to claim 8, in Liu et al., the through hole 7 of the detacher 3 is a straight hole (as in figures 6-8), an axis of the straight hole is perpendicular to an axis of the detachment mechanism (such as cavity 8 with hole 14 also shown in figures 6-8). In regard to claim 11, in Liu et al., the detachment mechanism further comprises a push tube (e.g., catheter 5), and wherein the first control member 4 and the second control member 11 are passed through the push tube and engaged with the detacher (figures 7 and 8 show that the wires 4 and 11 pass through inner cavity 8 and hole 14 of the catheter 5). In regard to claim 15, Liu et al. describes a delivery catheter 6 according the limitations of the detachment mechanism of claim 1. Allowable Subject Matter Claims 4-7, 9, 10, and 12-14 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: the claims recite structural limitations that depart from the teachings of Liu et al. such that the modification to Liu et al. in this manner is not considered to be sufficiently taught or suggested by the prior art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN T GEDEON whose telephone number is (571)272-3447. The examiner can normally be reached M-F 8:00 am to 5:30 PM ET. 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, David E. Hamaoui can be reached at 571-270-5625. 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. /BRIAN T GEDEON/Primary Examiner, Art Unit 3796 6 January 2026
Read full office action

Prosecution Timeline

Mar 05, 2024
Application Filed
Jan 06, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

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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
87%
Grant Probability
94%
With Interview (+7.0%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1327 resolved cases by this examiner. Grant probability derived from career allow rate.

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