Prosecution Insights
Last updated: September 17, 2026
Application No. 18/882,445

THROMBECTOMY DEVICE HAVING OPEN FRAME CELL RING

Non-Final OA §112
Filed
Sep 11, 2024
Priority
Aug 03, 2023 — continuation of 12/114,880
Examiner
RWEGO, KANKINDI
Art Unit
3771
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Nventric Corporation
OA Round
5 (Non-Final)
75%
Grant Probability
Favorable
5-6
OA Rounds
12m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
374 granted / 499 resolved
+4.9% vs TC avg
Strong +34% interview lift
Without
With
+33.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
23 currently pending
Career history
532
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
43.3%
+3.3% vs TC avg
§102
23.5%
-16.5% vs TC avg
§112
25.5%
-14.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 499 resolved cases

Office Action

§112
DETAILED ACTION It is noted during a telephone interview conducted 8/12/26, applicant’s representative acknowledged that the only one adjacent frame cell circumferentially interconnecting the first and second frame cell and the adjacent frame cells to flap inward to allow a clot to press into and through the gap are different structures having different functions (See Attached Interview Summary). 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 2/11/26 has been entered. Response to Amendment The amendment filed 5/07/26 has been entered. Claims 1, 8 and 15 are amended. Claims 1- 20 are being addressed by this Office action. Claim Objections Claim 17 is objected to because of the following informalities: “wherein the gap extends radially outward from a cylindrical interior of the clot arrestor between the first strut and the second strut to a surrounding environment” should be amended to - - wherein the circumferential gap extends radially outward from a cylindrical interior of the clot arrestor between the first strut and the second strut to a surrounding environment - - to maintain consistent claim terminology. Appropriate correction is required. 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. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1- 20 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. Amended claim 1 recites “wherein the first frame cell and the second frame cell are each circumferentially interconnected to only one adjacent frame cell, and wherein when deployed in free space outside of a vessel the first strut is circumferentially adjacent to and separated from the second strut by a gap having a gap width less than three times a strut width of each of the first strut and the second strut to allow the adjacent frame cells to flap inward to allow a clot to press into and through the gap” in lines 5- 10. There is no embodiment in which the only one adjacent frame cell interconnecting the first frame cell and second frame cell also flaps inward. Paragraph [0056] of the originally filed specification states “The adjacent frame cells can flap down to allow the clot to press into and through the slit, even when the clot is too large to pass through any individual frame cell.” However, there is no support for the same flapping adjacent frame cells performing the function of interconnecting the first frame cell and the second frame cell. Claims 2 - 7 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as being dependent off claim 1. Amended claim 8 recites “wherein the first frame cell and the second frame cell are each circumferentially interconnected to only one adjacent frame cell, wherein when deployed in free space outside of a vessel the first strut extends circumferentially adjacent and parallel to the second strut in a longitudinal direction on either side of a circumferential gap in the open frame cell ring, and wherein the circumferential gap has a gap width less than three times a strut width of each of the first strut and the second strut to allow the adjacent frame cells to flap inward to allow a clot to press into and through the gap” in lines 5- 11. There is no embodiment in which the only one adjacent frame cell circumferentially interconnecting the first frame cell and second frame cell also flaps inward. Paragraph [0056] of the originally filed specification states “The adjacent frame cells can flap down to allow the clot to press into and through the slit, even when the clot is too large to pass through any individual frame cell.” However, there is no support for the same flapping adjacent frame cells performing the function of circumferentially interconnecting the first frame cell and the second frame cell. Claims 9 - 15 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as being dependent off claim 8. Amended claim 15 recites “wherein the first frame cell and the second frame cell are each circumferentially interconnected to only one adjacent frame cell, wherein when deployed in free space outside of a vessel a circumferential gap separates the first strut from the second strut such that the first strut is circumferentially adjacent to the second strut, and wherein the circumferential gap has a gap width less than three times a strut width of each of the first strut and the second strut to allow the adjacent frame cells to flap inward to allow a clot to press into and through the gap.” in lines 5- 11. There is no embodiment in which the only one adjacent frame cell circumferentially interconnecting the first frame cell and second frame cell also flaps inward. Paragraph [0056] of the originally filed specification states “The adjacent frame cells can flap down to allow the clot to press into and through the slit, even when the clot is too large to pass through any individual frame cell.” However, there is no support for the same flapping adjacent frame cells performing the function of circumferentially interconnecting the first frame cell and the second frame cell. Claims 16- 20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as being dependent off claim 15. Claims 1- 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding amended claim 1, as written, it is not clear whether the only one adjacent frame cell circumferentially interconnecting the first and second frame cell and the adjacent frame cells to flap inward to allow a clot to press into and through the gap are the same structures or whether they are different structures. Claims 2- 7 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being dependent off claim 1. Regarding amended claim 8, as written, it is not clear whether the only one adjacent frame cell circumferentially interconnecting the first and second frame cell and the adjacent frame cells to flap inward to allow a clot to press into and through the gap are the same structures or whether they are different structures. Claims 9- 14 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being dependent off of claim 8. Regarding amended claim 15, as written, it is not clear whether the only one adjacent frame cell circumferentially interconnecting the first and second frame cell and the adjacent frame cells to flap inward to allow a clot to press into and through the gap are the same structures or whether they are different structures. Claims 16- 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being dependent off of claim 15. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KANKINDI RWEGO whose telephone number is (303)297-4759. The examiner can normally be reached Monday- Friday: 10:00- 5:00 MT. 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, (Jackie) Tan-Uyen Ho can be reached at 571 272-4696. 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. /KANKINDI RWEGO/Primary Examiner, Art Unit 3771
Read full office action

Prosecution Timeline

Show 10 earlier events
Oct 23, 2025
Applicant Interview (Telephonic)
Oct 29, 2025
Response Filed
Feb 11, 2026
Final Rejection mailed — §112
Apr 08, 2026
Response after Non-Final Action
May 07, 2026
Request for Continued Examination
May 12, 2026
Response after Non-Final Action
Aug 12, 2026
Examiner Interview (Telephonic)
Aug 20, 2026
Non-Final Rejection mailed — §112 (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

5-6
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+33.9%)
3y 0m (~12m remaining)
Median Time to Grant
High
PTA Risk
Based on 499 resolved cases by this examiner. Grant probability derived from career allowance rate.

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