Prosecution Insights
Last updated: April 19, 2026
Application No. 18/166,257

PERFUSION INDEX SMOOTHER

Non-Final OA §101§102
Filed
Feb 08, 2023
Examiner
FARDANESH, MARJAN
Art Unit
3791
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Masimo Corporation
OA Round
3 (Non-Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
3y 6m
To Grant
91%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
613 granted / 846 resolved
+2.5% vs TC avg
Strong +18% interview lift
Without
With
+18.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
28 currently pending
Career history
874
Total Applications
across all art units

Statute-Specific Performance

§101
8.8%
-31.2% vs TC avg
§103
29.6%
-10.4% vs TC avg
§102
28.7%
-11.3% vs TC avg
§112
21.8%
-18.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 846 resolved cases

Office Action

§101 §102
DETAILED ACTION The present application is being examined under the pre-AIA first to invent provisions. 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 01/08/2026 has been entered. 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 25-29 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. The claim(s) recite(s) “determining first indication…”, “determining a second indication…”, and “determining a final indication…”. These limitations, as drafted, are processes that, under their broadest reasonable interpretations, cover performances of these limitations in the mind but for the recitation of generic computer components. That is, other than reciting “an input capable of acquiring data responsive to intensity signals” and “output the final indication”, nothing in the claim element precludes the limitations from practically being performed in the mind. If a claim limitation, under its broadest reasonable interpretation, covers performance of the limitation in the mind but for the recitation of generic computer components, then it falls within the “Mental Processes” grouping of abstract ideas. Accordingly, the claim recites an abstract idea. This judicial exception is not integrated into a practical application. In particular, the claim recites additional elements- “an input capable of acquiring data responsive to intensity signals”; “output the final indication” these elements amount no more than mere instructions to apply the exception using a generic computer component. Accordingly, these additional elements do not integrate the abstract idea into a practical application because they do not impose any meaningful limits on practicing the abstract idea. The claim(s) is directed to an abstract idea. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception. As discussed above with respect to integration of the abstract idea into a practical application, the additional elements of “an input capable of acquiring data responsive to intensity signals” and a generic computer component cannot provide an inventive concept. The claim(s) is not patent eligible. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of pre-AIA 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 – (b) the invention was patented or described in a printed publication in this or a foreign country or in public use or on sale in this country, more than one year prior to the date of application for patent in the United States. Claims 25-29 are rejected under pre-AIA 35 U.S.C. 102 (b) as being anticipated by Terry (USPN 2003/0163032-Cited by the Applicant). Regarding claims 25,27-28 Terry discloses a method of determining an indication of a physiological condition using data responsive to intensity signals acquired from a detector capable of detecting light attenuated by body tissue (figures 3-5), the method comprising: determining one or more indications of pulse information from data responsive to intensity signals acquired from a detector capable of detecting light attenuated by body tissue ([0061 ]-[0065]); determining a first indication of amplitude data for a pulse based on the one or more indications of pulse information ([0061]-[0065]); determining a second indication of amplitude data for a combination of pulses based on the one or more indications of pulse information ([0061 ]-[0065]); determining a final indication of amplitude data based on the first and second indications, wherein the determining a final indication comprises selecting a lowest indication of amplitude from the first and second indications, averaging the first and second indications of amplitude, or using a statistical analysis of the first and second indications of amplitude ([0061]-[0065]); and outputting the final indication as an indication of blood flow ([0061]-[0065]). Regarding claims 29, Terry discloses the combination of pulses in the second indication of amplitude data comprises a maximum and minimum amplitude of a plurality of pulses ([0061]-[0065]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Pologe et al. (USPN 5,766,127-Cited by the Applicant) discloses a method and device for determining perfusion index using different techniques (see the entire document). Any inquiry concerning this communication or earlier communications from the examiner should be directed to MARJAN FARDANESH whose telephone number is (571)270-5508. The examiner can normally be reached on Monday-Friday 9:00-17:00. 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, Jacqueline Cheng can be reached on (571)272-5596. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see https://ppair-my.uspto.gov/pair/PrivatePair. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MARJAN FARDANESH/Primary Examiner, Art Unit 3791
Read full office action

Prosecution Timeline

Feb 08, 2023
Application Filed
Feb 22, 2025
Non-Final Rejection — §101, §102
May 23, 2025
Response Filed
Sep 05, 2025
Final Rejection — §101, §102
Dec 09, 2025
Response after Non-Final Action
Jan 08, 2026
Request for Continued Examination
Feb 17, 2026
Response after Non-Final Action
Mar 07, 2026
Non-Final Rejection — §101, §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594064
DUAL MOVABLE BLADE BIOPSY TOOL WITH STYLET
2y 5m to grant Granted Apr 07, 2026
Patent 12588841
CALIBRATION-FREE PULSE OXIMETRY
2y 5m to grant Granted Mar 31, 2026
Patent 12582313
PHYSIOLOGICAL MONITORING SYSTEM
2y 5m to grant Granted Mar 24, 2026
Patent 12582336
DETECTION DEVICE
2y 5m to grant Granted Mar 24, 2026
Patent 12551147
ANALYTE SENSOR
2y 5m to grant Granted Feb 17, 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
72%
Grant Probability
91%
With Interview (+18.5%)
3y 6m
Median Time to Grant
High
PTA Risk
Based on 846 resolved cases by this examiner. Grant probability derived from career allow rate.

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