Prosecution Insights
Last updated: September 17, 2026
Application No. 18/035,782

HEART VALVE ABLATION CATHETER

Final Rejection §102
Filed
May 08, 2023
Priority
Nov 08, 2020 — provisional 63/111,033 +1 more
Examiner
CLARK, RYAN T
Art Unit
3794
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Bio Refine Ltd.
OA Round
2 (Final)
50%
Grant Probability
Moderate
3-4
OA Rounds
6m
Est. Remaining
69%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allowance Rate
138 granted / 274 resolved
-19.6% vs TC avg
Strong +18% interview lift
Without
With
+18.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
26 currently pending
Career history
305
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
54.1%
+14.1% vs TC avg
§102
25.5%
-14.5% vs TC avg
§112
15.3%
-24.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 274 resolved cases

Office Action

§102
DETAILED ACTION A complete action on the merits of pending claims 1, 6, 7, 11, 17, 18, 24, 26, 27, 29, and 49-54 appears below. 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 . 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 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. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1, 6, 7, 11, 17, 18, 24, 26, 27, 29, and 49-54 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Gifford US 20200275974. Regarding claims 1 and 24, Gifford teaches piercing tissue along a perimeter of a heart valve with at least one electrode (Fig. 4D); applying mechanical force to the at least one electrode to deform the pierced tissue and reduce the perimeter of the heart valve annulus (par. [0077] pushing tissue together or par. [0081] walked method of turning one electrode in place to place the second); delivering tissue-ablating energy through the electrode, thereby inducing plastic deformation of the deformed tissue (par. [0078]); and releasing the mechanical force, leaving the heart valve annulus with a reduced perimeter (par. [0071]); wherein the applying mechanical force comprises placing torsion on the pierced tissue (par. [0077] pushing tissue together or par. [0081] walked method of turning one electrode in place to place the second). Regarding claim 6, Gifford teaches wherein the at least one sharpened element also comprises an element is used to deliver the structurally disruptive energy to the tissue (par. [0078]). Regarding claim 7, Gifford teaches wherein the at least one sharpened element delivers the structurally disruptive energy to the tissue by operating as an electrode (par. [0078]). Regarding claim 11, Gifford teaches wherein the mechanical deforming comprises compression including pinching the tissue between a plurality of the at least one sharpened element (par. [0077] pushing tissue together). Regarding claim 17, Gifford teaches wherein the tissue-ablating energy is provided by at least one of the group consisting of: radiofrequency energy; focused ultrasound energy; cryogenic cooling (par. [0078]). Regarding claim 18, Gifford teaches wherein the tissue ablated comprises at least one of the group consisting of: fibrous tissue of the valve annulus; and tissue of the heart wall adjacent to the fibrous tissue of the valve annulus (par. [0070]). Regarding claim 26, Gifford teaches wherein the applying mechanical force comprises compressing the pierced tissue (par. [0077] pushing tissue together). Regarding claim 27, Gifford teaches wherein the tissue-ablating energy is radiofrequency energy (par. [0078]). Regarding claim 29, Gifford teaches wherein the reduced perimeter draws leaflets of the heart valve into positions that reduce regurgitation of the valve (par. [0069]). Regarding claim 49, Gifford teaches wherein the at least one sharpened element comprises a plurality of sharpened elements (Fig. 4D), and the tissue is compressed by the torsion without change in distance between any of the plurality of sharpened elements (par. [0081] walked method of turning one electrode in place to place the second). Regarding claim 50, Gifford teaches comprising measuring impedance using the at least one sharpened element, and adjusting one or more of the delivery energy and operations to perform the piercing, using the measured impedance (par. [0075]). Regarding claim 51, Gifford teaches wherein the piercing the tissue comprises: placing a casing containing the at least one sharpened element in contact with the tissue (Fig. 1 108a/108b); and extending the at least one sharpened element out of the casing and into the tissue (par. [0073]). Regarding claim 52, Gifford teaches wherein the at least one sharpened element comprises a plurality of sharpened elements extending from the casing parallel to each other (Figs. 2 and 3). Regarding claim 53, Gifford teaches wherein a depth of the piercing of the tissue is limited by a distal surface of the casing (Fig. 4C 108 distal end against tissue). Regarding claim 54, Gifford teaches wherein the energy delivered comprises at least 112 Joules delivered over a period of at least 12 seconds (Watts=Joules/second and par. [0078] the heating can be done for about 15 seconds, the wattage can be between 10 and 100 Watts). Response to Arguments Applicant's arguments filed 3/27/26 have been fully considered but they are not persuasive. The applicant argues pars. [0077] and [0081] do not teach a torsion force on the pierced tissue. The examiner will address the arguments to par. [0081] since that is the section pertains to the torsion while par. [0077] was cited to demonstrate other forces used. The applicant argues that the pivot of the electrode is not a mode of applying force on tissue and there is no rotational force, angular displacement, or shear deformation about an axis. The examiner disagrees with this assertion. A torsion mode does not need to be an express mode of Gifford as long as it occurs in some way. To this end, par. [0081] states that the electrode is pivoted while inside of the tissue. Twisting within something else creates a torsion force. This is commonly seen in a screw turning in wood. Thus, as a screw creates a torsion force on the wood because it is turning so does the turning of the electrode in tissue. Therefore, the arguments presented by the applicant are not persuasive. Conclusion THIS ACTION IS MADE FINAL. 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 RYAN T. CLARK whose telephone number is (408)918-7606. The examiner can normally be reached on Monday-Friday 7AM-3PM 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, Joseph Stoklosa can be reached on (571)272-1213. 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. /R.T.C./Examiner, Art Unit 3794
Read full office action

Prosecution Timeline

May 08, 2023
Application Filed
Dec 31, 2025
Non-Final Rejection mailed — §102
Mar 27, 2026
Response Filed
Aug 07, 2026
Final Rejection mailed — §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

3-4
Expected OA Rounds
50%
Grant Probability
69%
With Interview (+18.2%)
3y 11m (~6m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 274 resolved cases by this examiner. Grant probability derived from career allowance rate.

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