Prosecution Insights
Last updated: October 25, 2026
Application No. 19/028,568

DEVICES AND METHODS FOR TREATING VASCULAR OCCLUSION

Non-Final OA §DP
Filed
Jan 17, 2025
Priority
Jan 10, 2017 — provisional 62/444,705 +4 more
Examiner
NGUYEN, TUAN VAN
Art Unit
3771
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Inari Medical Inc.
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
1y 6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
1040 granted / 1273 resolved
+11.7% vs TC avg
Strong +19% interview lift
Without
With
+19.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
31 currently pending
Career history
1304
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
45.9%
+5.9% vs TC avg
§102
26.8%
-13.2% vs TC avg
§112
18.4%
-21.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1273 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 . Priority This application is a continuation of U.S. patent application Ser. No. 18/311,805, filed on May 3, 2023, now issued as U.S. Pat. No. 12,251,120, which is a continuation of U.S. patent application Ser. No. 17/154,806, filed on Jan. 21, 2021, now issued as U.S. Pat. No. 11,806,033, which is a continuation of U.S. patent application Ser. No. 16/160,920, filed on Oct. 15, 2018, now issued as U.S. Pat. No. 10,912,577, which is a continuation of U.S. patent application Ser. No. 15/498,320, filed on Apr. 26, 2017, now issued as U.S. Pat. No. 10,098,651, which claims the benefit of U.S. Provisional Application No. 62/444,705, filed on Jan. 10, 2017. 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 21-34 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-11, 13 and 16-17, respectively, of U.S. Patent No. 12,310,608 (hereinafter “the patent”). Although the claims at issue are not identical, they are not patentably distinct from each other because all limitation in claims 21-34 of the application can be found in claims 1-11, 13 and 16-17, respectively, of the patent. Examiner notes that the limitation of “closed cells” in claim 1 of the patent is more specific than the limitation of “openings” in claim 21 of the patent application. The more specific anticipates the broader. The claims match-up with respect to one another as listed below: Patent Application No. 19/028,568 US Patent No. 12,310,608 Claim 21. A thrombus extraction device, comprising: a coring element comprising a plurality of interconnected struts, wherein the coring element includes a distal end portion defining a plurality of openings; and a mesh structure comprising a plurality of filaments and extending distally from the distal end portion of the coring element, wherein each of the filaments extends through a corresponding one of the openings such that a first portion of each of the filaments extends distally from the distal end portion of the coring element and a second portion of each of the filaments extends distally from the distal end portion of the coring element, and wherein the first portions and the second portions of the filaments are woven together. Claim 1. A thrombus extraction device, comprising: a coring element comprising a plurality of interconnected struts and having a distal end portion, wherein the interconnected struts form closed cells at a distal end portion of the coring element; and a mesh structure comprising a plurality of filaments and extending distally from the distal end portion of the coring element, wherein each of the filaments extends through a corresponding one of the closed cells such that a first portion of each of the filaments extends distally from the distal end portion of the coring element and a second portion of each of the filaments extends distally from the distal end portion of the coring element, and wherein the first portions and the second portions of the filaments are woven together. Claim 22. The thrombus extraction device of claim 21 wherein the openings extend circumferentially about a longitudinal axis of the coring element. Claim 2. The thrombus extraction device of claim 1 wherein the closed cells extend circumferentially about a longitudinal axis of the coring element. Claim 23. The thrombus extraction device of claim 21 wherein the first portion of each of the filaments comprises a first distal end portion, wherein the second portion of each of the filaments comprises a second distal end portion, and wherein the first distal end portion and the second distal end portion of each of the filaments are secured together. Claim 3. The thrombus extraction device of claim 1 wherein the first portion of each of the filaments comprises a first distal end portion, wherein the second portion of each of the filaments comprises a second distal end portion, and wherein the first distal end portion and the second distal end portion of each of the filaments are secured together. Claim 24. The thrombus extraction device of claim 23 wherein the first distal end portion and the second distal end portion of each of the filaments are secured together at a hub. Claim 4. The thrombus extraction device of claim 3 wherein the first distal end portion and the second distal end portion of each of the filaments are secured together at a hub. Claim 25. The thrombus extraction device of claim 23 wherein the first distal end portion and the second distal end portion of each of the filaments are secured together at an atraumatic tip. Claim 5. The thrombus extraction device of claim 3 wherein the first distal end portion and the second distal end portion of each of the filaments are secured together at an atraumatic tip. Claim 26. The thrombus extraction device of claim 23, further comprising: a first shaft coupled to a proximal end portion of the coring element; and a second shaft, wherein the first distal end portion and the second distal end portion of each of the filaments are secured together to the second shaft. Claim 6. The thrombus extraction device of claim 3, further comprising: a first shaft coupled to a proximal end portion of the coring element; and a second shaft, wherein the first distal end portion and the second distal end portion of each of the filaments are secured together to the second shaft. Claim 27. The thrombus extraction device of claim 26 wherein the first shaft and the second shaft are movable relative to one another. Claim 7. The thrombus extraction device of claim 6 wherein the first shaft and the second shaft are movable relative to one another. Claim 28. The thrombus extraction device of claim 21 wherein the coring element is configured to self-expand when unconstrained. Claim 8. The thrombus extraction device of claim 1 wherein the coring element is configured to self-expand when unconstrained. Claim 29. The thrombus extraction device of claim 21 wherein at least some of filaments form a loop about the corresponding one of the openings. Claim 9. The thrombus extraction device of claim 1 wherein at least some of filaments form a loop about the corresponding one of the closed cells. Claim 30. The thrombus extraction device of claim 21 wherein at least some of filaments do not form a loop about the corresponding one of the filaments. Claim 10. The thrombus extraction device of claim 1 wherein at least some of filaments do not form a loop about the corresponding one of the closed cells. Claim 31. The thrombus extraction device of claim 21 wherein the filaments comprise first filaments and second filaments, wherein individual ones of the first filaments form a loop about the corresponding one of the openings, and wherein individual ones of the second filaments do not form a loop about the corresponding one of the openings. Claim 11. The thrombus extraction device of claim 1 wherein the filaments comprise first filaments and second filaments, wherein individual ones of the first filaments form a loop about the corresponding one of the closed cells, and wherein individual ones of the second filaments do not form a loop about the corresponding one of the closed cells. Claim 32. The thrombus extraction device of claim 21 wherein the first portions and the second portions of the filaments are woven together to have a generally cylindrical shape. Claim 13. The thrombus extraction device of claim 1 wherein the first portions and the second portions of the filaments are woven together to have a generally cylindrical shape. Claim 33. The thrombus extraction device of claim 21 wherein a number of the filaments is the same as a number of the openings. Claim 16. The thrombus extraction device of claim 1 wherein a number of the filaments is the same as a number of the closed cells. Claim 34. The thrombus extraction device of claim 21 wherein a number of the filaments is greater than a number of the openings. Claim 17. The thrombus extraction device of claim 1 wherein a number of the filaments is twice as great as a number of the closed cells. Allowable Subject Matter Claims 21-34 would be allowable if a terminal disclaimer is filed to overcome the nonstatutory double patenting rejection set forth above. Claim 35-40 allowable. Holloway (US 2015/0032144, hereinafter “Holloway”) discloses a thrombus extraction device (FIG. 1-9, FIG. 1 is reproduced below), comprising: a coring element 16 comprising a plurality of interconnected struts, wherein the coring element includes a distal end portion defining a plurality of openings 20 (FIG. 2A); and a mesh structure 50 comprising a plurality of filaments and extending distally from the distal end portion of the coring element. PNG media_image1.png 272 744 media_image1.png Greyscale There is no art of record alone or in combination that discloses a thrombus extraction device that includes the combination of recited limitation in claim 21. Prior art of record did not disclose the limitation of wherein each of the filaments extends through a corresponding one of the openings such that a first portion of each of the filaments extends distally from the distal end portion of the coring element and a second portion of each of the filaments extends distally from the distal end portion of the coring element, and wherein the first portions and the second portions of the filaments are woven together. There is no art of record alone or in combination that discloses A method of manufacturing a thrombus extraction device that includes the combination of recited limitation in claim 35. Prior art of record did not disclose the limitation of threading each of the filaments through a corresponding one of the openings such that a first portion of each of the filaments extends distally from the distal end portion of the coring element and a second portion of each of the filaments extends distally from the distal end portion of the coring element; and weaving the first portions and the second portions of the filaments together to form a mesh structure that extends distally from the distal end portion of the coring element. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TUAN V NGUYEN whose telephone number is (571)272-5962. The examiner can normally be reached Monday - Friday 8:30 AM - 5:30 PM. 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 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. /TUAN V NGUYEN/Primary Examiner, Art Unit 3771
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Prosecution Timeline

Jan 17, 2025
Application Filed
Jun 24, 2025
Response after Non-Final Action
Jun 10, 2026
Response Filed
Jun 10, 2026
Response after Non-Final Action
Jul 21, 2026
Non-Final Rejection mailed — §DP (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
82%
Grant Probability
99%
With Interview (+19.4%)
3y 3m (~1y 6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1273 resolved cases by this examiner. Grant probability derived from career allowance rate.

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