Prosecution Insights
Last updated: October 04, 2026
Application No. 18/779,513

Hemodynamic Assist Device

Final Rejection §DP
Filed
Jul 22, 2024
Priority
Feb 07, 2012 — provisional 61/595,953 +5 more
Examiner
HULBERT, AMANDA K
Art Unit
3792
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Sanjaya Khanal
OA Round
2 (Final)
85%
Grant Probability
Favorable
3-4
OA Rounds
11m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allowance Rate
652 granted / 771 resolved
+14.6% vs TC avg
Minimal +4% lift
Without
With
+4.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
22 currently pending
Career history
803
Total Applications
across all art units

Statute-Specific Performance

§101
4.1%
-35.9% vs TC avg
§103
42.3%
+2.3% vs TC avg
§102
24.8%
-15.2% vs TC avg
§112
22.8%
-17.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 771 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 . Response to Amendment Applicant’s amendment dated July 6, 2026 is acknowledged. Currently claims 1, 5-11, 15-18 and 21-28 are pending in this application. 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 1, 5-11, 15-18 and 21-28 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 11,389,638. Although the claims at issue are not identical, they are not patentably distinct from each other because the claims are still not patentable distinct from one another for the follow reasons: Applicant has amended the claims in the instant application that were previously identical to the claims of the ‘638 patent, but the amendments have not patentably distinguished the two applications. The differences between are as follows: Applicant has removed the word “retrievable” from the preamble, however, the body of the claim now specifies a “release mechanism” that allows for the pump to be retrieved. Applicant has removed the “engagement mechanism” from the claim, however, the addition of the “release mechanism” further in the claim fulfills the same function as the engagement mechanism. Applicant has added that the cage not only remains but “functions as a stent.” This is not a patentably distinct change to the claim, as the cage was previously capable of functioning as a stent. Similar issues exist in independent claims 17 and 18. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 Amanda K Hulbert whose telephone number is (571)270-1912. The examiner can normally be reached Monday - Friday 9:00-5:00. 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, Unsu Jung can be reached at 571-272-8506. 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. /Amanda K Hulbert/Primary Examiner, Art Unit 3792
Read full office action

Prosecution Timeline

Jul 22, 2024
Application Filed
Oct 01, 2025
Non-Final Rejection mailed — §DP
Jan 02, 2026
Response Filed
Jul 06, 2026
Response Filed
Sep 14, 2026
Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12714858
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3y 1m to grant Granted Aug 25, 2026
Patent 12691280
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Patent 12691289
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2y 8m to grant Granted Jul 28, 2026
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
85%
Grant Probability
89%
With Interview (+4.2%)
3y 1m (~11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 771 resolved cases by this examiner. Grant probability derived from career allowance rate.

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