Prosecution Insights
Last updated: April 19, 2026
Application No. 17/553,999

SYSTEMS AND METHODS FOR PERFUSING A HUMAN PLACENTA-BASED MRI PHANTOM

Non-Final OA §102
Filed
Dec 17, 2021
Examiner
BURKE, TIONNA M
Art Unit
2178
Tech Center
2100 — Computer Architecture & Software
Assignee
The General Hospital Corporation
OA Round
3 (Non-Final)
54%
Grant Probability
Moderate
3-4
OA Rounds
4y 9m
To Grant
73%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
233 granted / 431 resolved
-0.9% vs TC avg
Strong +19% interview lift
Without
With
+19.3%
Interview Lift
resolved cases with interview
Typical timeline
4y 9m
Avg Prosecution
46 currently pending
Career history
477
Total Applications
across all art units

Statute-Specific Performance

§101
11.0%
-29.0% vs TC avg
§103
60.1%
+20.1% vs TC avg
§102
18.1%
-21.9% vs TC avg
§112
7.5%
-32.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 431 resolved cases

Office Action

§102
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 . Applicant’s Response In Applicant’s response dated 12/22/25, the Applicant amended Claim 1, 22, 23, 25, canceled Claim 5, 6 and argued claims rejected in the Office Action dated 9/25/25. Claims 1-4, 7-9 and 22-25 are pending examination. In light of the Applicant’s amendments and remarks, the 35 USC 103 rejections have been withdrawn. 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 12/22/25 has been entered. 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)(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 1-4, 7-9 and 22-25 rejected under 35 U.S.C. 102 (a)(2)as being anticipated by Madsen et al., “Ex Vivo Human Placenta Perfusion, Metabolic and Functional Imaging for Obstetric Research—A Feasibility Study” (hereinafter “Madsen”). Claim 1: Madsen discloses: A system for perfusing an ex vivo placenta to be imaged using a magnetic resonance imaging (MRI) device (see abstract and page 2, “Magnetic Resonance Imaging), the system comprising: a chamber configured to house the ex vivo placenta therein, wherein the chamber comprises a first portion and a second portion, and a first partition separating the chamber into the first portion and a second portion, wherein the ex vivo placenta is housed at least partially in the first portion (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches a chamber configured to house the ex vivo placenta in the portion and another part of the system; and at least one radio frequency (RF) coil disposed in the second portion of the chamber and configured to detect MR signals generated, at least in part, by the ex vivo placenta when present in the chamber during imaging performed by the MRI device (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches Imaging was performed on a 3 T Signa HDx MRI scanner (GE Healthcare, Milwaukee, WI) equipped with a 2 element 1 H array coil (GE Healthcare) and Clamshell 13C transmit coil (Rapid Biomedical GmbH, Rimpar, Germany). The perfusion chamber with the placenta was placed in the scanner isocenter such that the middle of the organ coincided with the radiofrequency center of both coils; and at least one first inlet disposed in the second portion for receiving at least one first tube, the at least one first tube being configured to pass through at least part of the second portion to couple at least one first pump to a compartment of the ex vivo placenta when present in the chamber (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches an inlet in a portion connected to the chamber for receiving a tube pumps fluid to a portion of the placenta. Claim 2: Madsen discloses: at least one second inlet disposed in the first portion for receiving at least one second tube, the at least one second tube being configured to couple at least one second pump to a maternal compartment of the ex vivo placenta when present in the chamber (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches an inlet disposed in the first portion for the placenta receiving fluid. Claim 3: Madsen discloses: further comprising the at least one first tube and the at least one first pump (see figure 1). Madsen teaches a tube and a pump. Claim 4: Madsen discloses: further comprising the at least one second tube and the at least one second pump (see figure 1). Madsen teaches multiple tubes and multiple pumps. Claim 7: Madsen discloses: the at least one first pump is configured to pump a first solution to the fetal compartment of the ex vivo placenta through the at least one first tube; and the at least one second pump is configured to pump a second solution to the maternal compartment of the ex vivo placenta through the at least one second tube (see figure 1 and description). Madsen teaches 2 pumps to pump two solutions. Claim 8: Madsen discloses: at least one third tube coupled to an injector at a first end and to the at least one first tube and/or the at least one second tube at least one second end (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches a tube used for injecting at the first end. Claim 9: Madsen discloses: wherein the injector comprises an oxygenator for oxygenating the first and/or second solutions (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches an oxygenator for the solutions. Claim 22: Madsen discloses: A system for magnetic resonance imaging (MRI) compatible perfusion apparatus comprising (see abstract and page 2, “Magnetic Resonance Imaging): a chamber configured to house the ex vivo placenta therein, wherein the chamber comprises a first portion, a second portion, and a first partition separating the chamber into the first portion and a second portion, wherein the ex vivo placenta, when present in the chamber, is housed at least partially in the first portion of the chamber (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches a chamber configured to house the ex vivo placenta in the portion and another part of the system; and at least one first inlet arranged to receive at least one first tube configure to couple to a fetal compartment of the ex vivo placenta when present in the chamber (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches an inlet in a portion connected to the chamber for receiving to the fetal compartment; at least one second inlet configured to receive at least one second tube configured to couple to a maternal compartment of the ex vivo placenta when present in the chamber (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches an inlet in a portion connected to the chamber for receiving to a maternal department; at least one radio frequency (RF) coil disposed in the second portion of the chamber and configured to detect MR signals generated, at least in part, by the ex vivo placenta when present in the chamber during MR imaging (see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches Imaging was performed on a 3 T Signa HDx MRI scanner (GE Healthcare, Milwaukee, WI) equipped with a 2 element 1 H array coil (GE Healthcare) and Clamshell 13C transmit coil (Rapid Biomedical GmbH, Rimpar, Germany). The perfusion chamber with the placenta was placed in the scanner isocenter such that the middle of the organ coincided with the radiofrequency center of both coils. Claim 23: Madsen discloses: wherein the at least one RF coil is coupled to the chamber below the first partition see page 2, figure 1, “Magnetic Resonance Imaging” Section). Madsen teaches Imaging was performed on a 3 T Signa HDx MRI scanner (GE Healthcare, Milwaukee, WI) equipped with a 2 element 1 H array coil (GE Healthcare) and Clamshell 13C transmit coil (Rapid Biomedical GmbH, Rimpar, Germany). The perfusion chamber with the placenta was placed in the scanner isocenter such that the middle of the organ coincided with the radiofrequency center of both coils. Claim 24: Madsen discloses: further comprising: a first solution coupled to at least one first pump, the at least one first pump being coupled to the first tube; and a second solution coupled to at least one second pump, the at least one second pump being coupled to the at least one second tube, wherein the second solution is different than the first solution (see figure 1 and description). Madsen teaches 2 pumps to pump two solutions. Claim 25: Madsen discloses: wherein the chamber further comprises a second partition separating the second portion from the third portion, the first portion comprises the at least one second inlet, and the third portion comprises the at least one first inlet (see figure 1 and description). Madsen multiple portions of a chamber with different inlets. This is a design choice; the same functions are being performed. Response to Arguments Applicant’s arguments with respect to claims 1 and 22 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TIONNA M BURKE whose telephone number is (571)270-7259. The examiner can normally be reached M-F 8a-4p. 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, Stephen Hong can be reached at (571)272-4124. 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. /TIONNA M BURKE/Examiner, Art Unit 2178 1/24/26
Read full office action

Prosecution Timeline

Dec 17, 2021
Application Filed
Feb 25, 2025
Non-Final Rejection — §102
Jul 03, 2025
Response Filed
Sep 23, 2025
Final Rejection — §102
Dec 22, 2025
Request for Continued Examination
Jan 10, 2026
Response after Non-Final Action
Jan 24, 2026
Non-Final Rejection — §102 (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

3-4
Expected OA Rounds
54%
Grant Probability
73%
With Interview (+19.3%)
4y 9m
Median Time to Grant
High
PTA Risk
Based on 431 resolved cases by this examiner. Grant probability derived from career allow rate.

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