Prosecution Insights
Last updated: April 19, 2026
Application No. 18/616,839

MITRAL VALVE IMPLANTS FOR THE TREATMENT OF VALVULAR REGURGITATION

Non-Final OA §DP
Filed
Mar 26, 2024
Examiner
DANG, ANH TIEU
Art Unit
3771
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Polares Medical Inc.
OA Round
3 (Non-Final)
65%
Grant Probability
Favorable
3-4
OA Rounds
3y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allow Rate
412 granted / 633 resolved
-4.9% vs TC avg
Strong +36% interview lift
Without
With
+35.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
46 currently pending
Career history
679
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
41.4%
+1.4% vs TC avg
§102
29.0%
-11.0% vs TC avg
§112
19.9%
-20.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 633 resolved cases

Office Action

§DP
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 December 30, 2025 has been entered. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 52-54, 56-71 are rejected on the ground of nonstatutory double patenting as being unpatentable over claim 9 of U.S. Patent No. 10500048 in view of Khairkhahan et al (US 20130023985). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 of Patent 10500048 recites a coaptation assist device comprising a anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory (claim 9) structure comprising a hub and a plurality of struts (claim 1), wherein the coaptation assist device comprises a proximal end greater than a distal end, wherein the coaptation assist device tapers along a first lateral edge and a second lateral edge toward the distal end (claim 1), wherein the hub is placed on a proximal side of the coaptation assist device and coupled to the biocompatible membrane; and a helical tissue anchor, wherein the hub is configured to receive the helical tissue anchor, wherein the helical tissue anchor is configured to be rotated relative to the hub, wherein the helical tissue anchor is configured to secure the coaptation assist device to an annulus of a mitral valve (claim 1). Khairkhahan teaches an anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory structure (500, nitinol, paragraph 0100) comprising a hub (762)and a plurality of struts (830), wherein the coaptation assist body comprises a biocompatible membrane (covering 850, paragraph 0100, 0114) coupled to the shape memory structure in order to maintain a shape of the coaptation assist body. Therefore, it would have been obvious to one with ordinary skill in the art at the time of the invention to further include a biocompatible membrane coupled to the shape memory structure in the device of Patent 10500048 claim 9 order to maintain of a shape of the coaptation assist body. Claims 61- are rejected on the ground of nonstatutory double patenting as being unpatentable over claim 9 of U.S. Patent No. 10500048 in view of Khairkhahan et al (US 20130023985). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 of Patent 10500048 recites a coaptation assist device comprising a anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory (claim 9) structure comprising a hub and a plurality of struts (claim 1), wherein the coaptation assist device comprises a proximal end greater than a distal end, wherein the coaptation assist device tapers along a first lateral edge and a second lateral edge toward the distal end (claim 1), wherein the hub is placed on a proximal side of the coaptation assist device and coupled to the biocompatible membrane; and a helical tissue anchor, wherein the hub is configured to receive the helical tissue anchor, wherein the helical tissue anchor is configured to be rotated relative to the hub, wherein the helical tissue anchor is configured to secure the coaptation assist device to an annulus of a mitral valve (claim 1). Khairkhahan teaches an anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory structure (500, nitinol, paragraph 0100) comprising a hub (762)and a plurality of struts (830), wherein the coaptation assist body comprises a biocompatible membrane (covering 850, paragraph 0100, 0114) coupled to the shape memory structure in order to maintain a shape of the coaptation assist body. Therefore, it would have been obvious to one with ordinary skill in the art at the time of the invention to further include a biocompatible membrane coupled to the shape memory structure in the device of Patent 10500048 claim 9 order to maintain of a shape of the coaptation assist body. Claims 52-54, 56-60 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 8 and 21 of U.S. Patent No. 10500048 in view of Khairkhahan et al (US 20130023985). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 of Patent 10500048 recites a coaptation assist device comprising a anchoring system comprising: a coaptation assist device (claim 1), wherein the coaptation assist device comprises an arcuate, peripheral superior edge, a first lateral edge, a second lateral edge, an inferior edge, wherein the arcuate peripheral superior edge is greater than the inferior edge (claims 8, 21), wherein the coaptation assist device comprises a hub and a plurality of struts extending from the hub, wherein the hub is positioned closer to the arcuate, peripheral superior edge than the inferior edge (claim 1, positioned proximally from which the plurality of struts extend); and a helical tissue anchor, wherein the hub is configured to receive the helical tissue anchor, wherein the helical tissue anchor is configured to be rotated relative to the hub, wherein the helical tissue anchor is configured to secure the coaptation assist device to an annulus of a mitral valve (claim 1). Khairkhahan teaches an anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory structure (500, nitinol, paragraph 0100) comprising a hub (762)and a plurality of struts (830), wherein the coaptation assist body comprises a biocompatible membrane (covering 850, paragraph 0100, 0114) with a plurality of struts comprising a first zone that is generally oriented substantially parallel to the longitudinal axis of a substantially perpendicular to the longitudinal axis of the coaptation assist body (see image in previous office action) coupled to the shape memory structure in order to maintain a shape of the coaptation assist body. Therefore, it would have been obvious to one with ordinary skill in the art at the time of the invention to further include a plurality of struts comprising a first zone that is generally oriented substantially parallel to the longitudinal axis of a substantially perpendicular to the longitudinal axis of the coaptation assist body with a biocompatible membrane coupled to the shape memory structure in the device of Patent 10500048 claims 8 and 21 in order to maintain of a shape of the coaptation assist body. Claims 66-71 are rejected on the ground of nonstatutory double patenting as being unpatentable over claim 9 of U.S. Patent No. 10500048 in view of Khairkhahan et al (US 20130023985). Although the claims at issue are not identical, they are not patentably distinct from each other because claim 1 of Patent 10500048 recites a coaptation assist device comprising a anchoring system comprising: a coaptation assist device (claim 1), wherein the coaptation assist device comprises a hub and a plurality of struts extending from the hub, wherein at least one strut of the plurality of struts comprises a first zone that is generally oriented downward and a second zone, wherein the second zone has a greater dimension transverse to the longitudinal axis of the coaptation assist body than the first zone (claim 1), wherein the hub directly from the second zone (claim 1, positioned proximally from which the plurality of struts extend); and a helical tissue anchor, wherein the hub is configured to receive the helical tissue anchor, wherein the helical tissue anchor is configured to be rotated relative to the hub, wherein the helical tissue anchor is configured to secure the coaptation assist device to an annulus of a mitral valve (claim 1). Khairkhahan teaches an anchoring system comprising: a coaptation assist device, wherein the coaptation assist device comprises a shape memory structure (500, nitinol, paragraph 0100) comprising a hub (762)and a plurality of struts (830), wherein the coaptation assist body comprises a biocompatible membrane (covering 850, paragraph 0100, 0114) with a plurality of struts comprising a first zone that is generally oriented substantially parallel to the longitudinal axis of a substantially perpendicular to the longitudinal axis of the coaptation assist body (see image in previous office action) coupled to the shape memory structure in order to maintain a shape of the coaptation assist body. Therefore, it would have been obvious to one with ordinary skill in the art at the time of the invention to further include a plurality of struts comprising a first zone that is generally oriented substantially parallel to the longitudinal axis of a substantially perpendicular to the longitudinal axis of the coaptation assist body with a biocompatible membrane coupled to the shape memory structure in the device of Patent 10500048 claims 8 and 21 in order to maintain of a shape of the coaptation assist body. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANH TIEU DANG whose telephone number is (571)270-3221. The examiner can normally be reached Monday-Thursday (9am-4pm EST). 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, Darwin Erezo can be reached at (571) 272-4695. 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. /ANH T DANG/Primary Examiner, Art Unit 3771
Read full office action

Prosecution Timeline

Mar 26, 2024
Application Filed
Jul 01, 2024
Response after Non-Final Action
Mar 13, 2025
Non-Final Rejection — §DP
Jun 18, 2025
Response Filed
Oct 10, 2025
Final Rejection — §DP
Dec 30, 2025
Request for Continued Examination
Feb 15, 2026
Response after Non-Final Action
Mar 16, 2026
Examiner Interview (Telephonic)
Mar 20, 2026
Non-Final Rejection — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589028
GRASPING STRUCTURE FOR MEMBRANE REMOVAL
2y 5m to grant Granted Mar 31, 2026
Patent 12582436
EXTERNAL NEEDLE GUIDE AND ANCHOR
2y 5m to grant Granted Mar 24, 2026
Patent 12551671
SURGICAL DILATORS AND ASSEMBLIES AND METHODS THEREOF
2y 5m to grant Granted Feb 17, 2026
Patent 12551334
SURGICAL IMPLANT DELIVERY WITH LOCKABLE PLUNGER
2y 5m to grant Granted Feb 17, 2026
Patent 12544094
Pulse Control For Ultrasonic Tool Systems
2y 5m to grant Granted Feb 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
65%
Grant Probability
99%
With Interview (+35.8%)
3y 5m
Median Time to Grant
High
PTA Risk
Based on 633 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month