Prosecution Insights
Last updated: September 17, 2026
Application No. 18/910,679

IMPLANTABLE MONITOR FOR DETERMINING FLUID STATUS IN DIALYSIS PATIENTS

Non-Final OA §102
Filed
Oct 09, 2024
Priority
Oct 10, 2023 — provisional 63/589,117
Examiner
NGO, MEAGAN N
Art Unit
Tech Center
Assignee
Frumkin Cardiorenal LLC
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
1y 7m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
126 granted / 216 resolved
-1.7% vs TC avg
Strong +33% interview lift
Without
With
+33.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
49 currently pending
Career history
268
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
56.1%
+16.1% vs TC avg
§102
18.2%
-21.8% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 216 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 . Claim Objections Claim 1 is objected to because of the following informalities: Claim 1, ln. 8 should read ---and [[assigned]] assigning a score;--- Appropriate correction is required. 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. Claim(s) 1-6 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Sarkar et al. (Pub. No.: US 2025/0262362 A1). Regarding claim 1, Sarkar discloses (fig. 1-6) a method of managing fluid status in patients having renal insufficiency or renal failure (¶ 0004, ¶ 0042), comprising: Implanting a sensor device (implantable medical device 10) into a subject, wherein the sensor device has sensors operative to monitor a physical parameter (¶ 0033, ¶ 0035); Sensing the physical parameter using the implanted sensor (100, impedance measurements collected during a current dialysis session ¶ 0082-¶ 0053); Comparing the physical parameter data to a predetermined range (previous dialysis session data, ¶ 0083) to determine whether the physical parameter is within, above, or below the predetermined range and assigning a score (a mathematical model is implemented to predict fluid volume estimates based on historical and contemporaneous impedance measurements, ¶ 0083); Applying a weighting factor to the score (the dry impedance estimate is further personalized depending on various factors, ¶ 0086); and Calculating a total score (a risk assessment is performed, ¶ 0087-¶ 0088); and Comparing the total score to at least one predetermined threshold to determine a fluid status of the patient (a determination of whether there is an acceptable risk level, ¶ 0092-¶ 0093). Regarding claim 2, Sarkar discloses iterating continuously the steps of sensing, comparing, applying and calculating from initiation of dialysis (¶ 0008); and Halting the dialysis when the total score falls within a second predetermined range (¶ 0094, fig. 6). Regarding claim 3, Sarkar further discloses iterating remotely the steps of sensing, comparing, applying and calculating (¶ 0008); Comparing the total score to a third predetermined range to predict if the subject will experience complications prior to a previously scheduled dialysis event (¶ 0037); and Performing dialysis prior to a previously scheduled dialysis event if the prediction is positive for complications (¶ 0094-¶ 0095). Regarding claim 4, Sarkar discloses wherein the predetermined range, the weighting factor and/or the at least one predetermined threshold are adjusted to improve accuracy of the determination of the fluid status of the subject (¶ 0040). Regarding claim 5, Sarkar discloses wherein the sensors are selected from the group consisting of: an accelerometer, a trans-thoracic impedance sensor, a heart rate sensor, a lung tidal volume sensor, a respiratory sensor, and any combination thereof (¶ 0035). Regarding claim 6, Sarkar discloses wherein the physical parameter is selected from the group consisting of: a change in heart sounds, a presence of fluid in the subject’s lungs, a heart rate, a lung tidal volume, breathing rate, airflow, cough frequency, body temperature, carbon dioxide level, and any combination thereof (¶ 0035). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Sigg et al. (Pub. No.: US 2016/0331884 A1) discloses a method of managing fluid status. Katra et al. (Pub. No.: US 2012/0035432 A1) discloses a method of managing fluid status. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MEAGAN NGO whose telephone number is (571)270-1586. The examiner can normally be reached M - TH 8:00 - 4:00 PT. 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, Sarah Al-Hashimi can be reached at (571) 272-7159. 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. /MEAGAN NGO/Examiner, Art Unit 3781 /PHILIP R WIEST/Primary Examiner, Art Unit 3781
Read full office action

Prosecution Timeline

Oct 09, 2024
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12685810
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Patent 12678166
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Patent 12678553
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3y 5m to grant Granted Jul 14, 2026
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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
58%
Grant Probability
91%
With Interview (+33.1%)
3y 6m (~1y 7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 216 resolved cases by this examiner. Grant probability derived from career allowance rate.

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