Prosecution Insights
Last updated: April 19, 2026
Application No. 17/927,681

EX-VIVO HEART PERFUSION SYSTEMS

Non-Final OA §102
Filed
Nov 23, 2022
Examiner
KOSAR, AARON J
Art Unit
1655
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
UPMC
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
3y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allow Rate
547 granted / 770 resolved
+11.0% vs TC avg
Strong +31% interview lift
Without
With
+30.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
12 currently pending
Career history
782
Total Applications
across all art units

Statute-Specific Performance

§101
9.1%
-30.9% vs TC avg
§103
29.2%
-10.8% vs TC avg
§102
17.8%
-22.2% vs TC avg
§112
29.0%
-11.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 770 resolved cases

Office Action

§102
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 . Election/Restrictions Applicant’s election Group I in the reply filed on October 15, 2025, is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claims 1-25 are pending of which claims 10-25 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Pending claims 1-9 have been examined on the merits. 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. Claim(s) 1, 6, and 7 are rejected under 35 U.S.C. 102(a)(1) and (a)(2) as being anticipated by Badiwala et al (US 20200120924 A1). The instant claims are drawn to a device (“system”) comprising: a reservoir; a pump; an oxygenator; adapters for fluidly connection to an ex-vivo (a) right atria, (b) pulmonary artery, (c) left atria, and (d) aorta; a network of conduits that fluidly couple (i-iv); and a plurality of valves coupled to the conduits; wherein the system is configurable to the following modes, directing perfusate: to coronary arteries (Langendorff Perfusion Mode); to a left half of the heart (Isolated Left Heart Working Mode); to a right half of the heart (Isolated Right Heart Working Mode); and to both the left half and the right half of the heart (Whole Heart Working Mode). The disclosure further teaches that the “valves” broadly include clamps disclosing that “[i]n FIG. 1, valves (e.g., clamps or other occlusion devices) at points 52, 54, 56, and 58…” (see para [0038]). Badiwala et al ‘924, however, anticipates the claims by teaching an ex-vivo perfusion device, including the device of fig 1A (as reproduced below): PNG media_image1.png 530 782 media_image1.png Greyscale The device, comprises a reservoir (110), perfusion and oxygenating pumps (131-132) and oxygenator (120), adaptors (205,215,211,220) fluidly connected respectively to the right atria, pulmonary artery, left atria, and aorta; a network of conduits that fluidly couple (181-189; and broadly interpreted as comprising an aortic inlet, outlet and Langendorff port as required of claim 6); and a plurality of valves (including scissors/clamps) coupled to the conduits (depicted by scissors in fig 1A, (141-145). The system is expressly taught and implied by the ability to selectively clamp/valve-close one of more of the associated conduits, then the device of Badiwala et al based on the finite combinations useful thereamong, is broadly and reasonably interpreted as to be a configuration suitable for perfusate directing as required of instant claim 1 (including to coronary arteries (Langendorff Perfusion Mode), and/or to a left and/or right half of the heart (Isolated Left. Isolate Right, or Whole Heart Working Modes) (see ‘924, fig 1A and at para [0060-0085]). Additionally, the device as configured and being suitable for sampling metabolites and adjusting perfusate flow (see [0080-0085]; broadly, a configuration operable to restore and maintain normothermic heart metabolism and assessing function, as required of instant claim 7). Please note, since the Office does not have the facilities for examining and comparing Applicants’ composition with the composition of the prior art, the burden is on applicant to show a novel or unobvious difference between the claimed product and the product of the prior art. See In re Best, 562 F.2d 1252, 195 USPQ 430 (CCPA 1977) and In re Fitzgerald, 619 F.2d 67, 205 USPQ 594 (CCPA 1980), and “as a practical matter, the Patent Office is not equipped to manufacture products by the myriad of processes put before it and then obtain prior art products and make physical comparisons therewith.” In re Brown, 459 F.2d 531, 535, 173 USPQ 685, 688 (CCPA 1972). Claim Objections Claims 2-5, 8, and 9 are objected to because of the following: The claimed are objected to as depending directly or indirectly from rejected claims, which are rejected for the reasons set forth above. Conclusion No claims are presently allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AARON J KOSAR whose telephone number is (571)270-3054. The examiner can normally be reached Mon.-Fri. 9-6 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, Anand Desai can be reached at (571)272-0947. 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. /AARON J KOSAR/Primary Examiner, Art Unit 1655
Read full office action

Prosecution Timeline

Nov 23, 2022
Application Filed
Feb 07, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12595488
INSECTICIDAL PROTEINS FROM PLANTS AND METHODS FOR THEIR USE
2y 5m to grant Granted Apr 07, 2026
Patent 12589187
Valve Material With Combined Anti-Clotting And Anti-Calcification Properties And Preparation Method Therefor
2y 5m to grant Granted Mar 31, 2026
Patent 12589152
COMPOSITION FOR ENHANCED ABSORPTION OF SUPPLEMENTS
2y 5m to grant Granted Mar 31, 2026
Patent 12568959
ORGAN PRESERVATION AND/OR PERFUSION SOLUTION
2y 5m to grant Granted Mar 10, 2026
Patent 12569531
TRADITIONAL CHINESE HERBAL COMPOSITION FOR TREATING PULMONARY NODULE, PREPARATION METHOD THEREOF, AND HONEYED PILL
2y 5m to grant Granted Mar 10, 2026
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
71%
Grant Probability
99%
With Interview (+30.6%)
3y 6m
Median Time to Grant
Low
PTA Risk
Based on 770 resolved cases by this examiner. Grant probability derived from career allow rate.

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