Prosecution Insights
Last updated: May 29, 2026
Application No. 18/343,465

Detecting Low Ejection Fraction using Photoplethysmography (PPG)

Non-Final OA §101
Filed
Jun 28, 2023
Examiner
LAU, MICHAEL J
Art Unit
3796
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Google LLC
OA Round
3 (Non-Final)
70%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
210 granted / 298 resolved
+0.5% vs TC avg
Strong +25% interview lift
Without
With
+25.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
32 currently pending
Career history
343
Total Applications
across all art units

Statute-Specific Performance

§101
5.6%
-34.4% vs TC avg
§103
89.5%
+49.5% vs TC avg
§102
1.8%
-38.2% vs TC avg
§112
0.9%
-39.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 298 resolved cases

Office Action

§101
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 4/23/2026 has been entered. Response to Arguments Applicant's arguments and amendments regarding the 101 rejection filed 4/23/2026 have been fully considered but they are not persuasive. The Applicant argued that the claims recite additional elements that improve technology tasked with monitoring and detecting cardiac dysfunctions. The Examiner respectfully disagrees. The Applicant did not identify which elements in the claim fundamentally improve the computer technology. The claims merely recite collecting data from generic sensors (extrasolution activity of necessary data gathering, see MPEP 2106.05(g)), applying a generic machine learning model to make a prediction (applying a program to perform the abstract idea on a computer, see MPEP 2106.05(f)), and outputting results via an annunciator (extrasolution activity of data outputting, see MPEP 2106.05(g)). The Examiner recommends adding language in the claims that improve the technology of machine learning models. Applicant’s arguments and amendments regarding the 103 rejection, see pages 7-11, filed 4/23/2026, with respect to USC 103 have been fully considered and are persuasive. The 103 rejection of claims 1, 3-14, 16-17, and 20 has been withdrawn. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 1-20 are rejected under 35 U.S.C. 101 because of the following analysis: Step 1: Do the claims recite one of the statutory categories of matter (i.e. method, apparatus, etc.)? YES, Claims 1, 3-14 recite a method and claims 16-17, and 20 recite apparatuses. Step 2A Prong 1: Is there an abstract idea involved? YES, the claim language recites generating a cardiac dysfunction prediction for the user (analysis/determination). These limitations, as drafted, is a process that, under its broadest reasonable interpretation, covers performance of the limitation in mind or by a person using a pen and paper. Step 2a Prong 2: Do the claims recite additional elements that integrate the exception into a practical application? NO, the claims recite a sensor, a computing device, and an annunciator. The computing device and annunciator (such as a display) are recited at a high level of generality and is recited as performing generic computer functions. i.e., data processing and display. The elements amount to mere instructions to implement an abstract idea on a computer, or merely uses a computer as a tool to perform an abstract idea (see MPEP 2106.04(d) and 2106.05(f)). Accordingly, each of the additional elements do not integrate the abstract idea into a practical application because they do not impose any meaningful limitations on practicing the abstract idea. The sensor is generically recited and wouldn’t amount to more than an extrasolution activity of necessary data gathering (MPEP 2106.05(g)). The dependent claims recite the same abstract idea as the independent claims. Furthermore, these claims only contain recitations that further limit the abstract idea (that is, the claims only recite limitations that further limit the mental process. The elements are recited at a high level of generality and is recited as performing generic computer functions. i.e., data processing and display. The elements amount to mere instructions to implement an abstract idea on a computer, or merely uses a computer as a tool to perform an abstract idea (see MPEP 2106.04(d) and 2106.05(f)). Step 2B: Do the additional elements amount to “Significantly More” than the judicial exception? NO, the emphasized elements cited above do not amount to significantly more than the judicial exception because these limitations are simply appending well-understood, routine and conventional activities previously known in the industry, specified at a high level of generality, to the judicial exception, e.g., a claim to an abstract idea requiring no more than a generic computer to perform generic computer functions that are well-understood, routine and conventional activities previously known in the industry (see Electric Power Group, 830 F.3d 1350 (Fed. Cir. 2016); Alice Corp. v. CLS Bank Int’I, 110 USPQ2d 1976 (2014)). In view of the above, the additional elements individually do not amount to significantly more than the above-judicial exception (the abstract idea). Looking at the limitations as an ordered combination (that is, as a whole) adds nothing that is not already present when looking at the elements taken individually. There is no indication that the combination of elements improves the functioning of a computer, for example, or improves any other technology. There is no indication that the combination of elements permits automation of specific tasks that previously could not be automated. There is no indication that the combination of elements includes a particular solution to a computer-based problem or a particular way to achieve a desired computer-based outcome. Rather, the collective functions of the claimed invention merely provide conventional computer implementation, i.e., the computer is simply a tool to perform the process. Simply appending well-understood, routine, conventional activities previously known to the industry, specified at a high level of generality, to the judicial exception, e.g., a claim to an abstract idea requiring no more than a generic computer to perform generic computer functions that are well-understood, routine and conventional activities previously known to the industry, as discussed in Alice Corp., 573 U.S. at 225, 110 USPQ2d at 1984 (see MPEP § 2106.05(d)). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL J LAU whose telephone number is (571)272-2317. The examiner can normally be reached 8-5:30 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, Carl Layno can be reached at 571-272-4949. 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. /MICHAEL J LAU/Examiner, Art Unit 3796
Read full office action

Prosecution Timeline

Jun 28, 2023
Application Filed
Jul 15, 2025
Non-Final Rejection mailed — §101
Oct 14, 2025
Response Filed
Jan 23, 2026
Final Rejection mailed — §101
Apr 23, 2026
Request for Continued Examination
Apr 30, 2026
Response after Non-Final Action
May 12, 2026
Non-Final Rejection mailed — §101 (current)

Precedent Cases

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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
70%
Grant Probability
96%
With Interview (+25.1%)
2y 10m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 298 resolved cases by this examiner. Grant probability derived from career allowance rate.

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