Prosecution Insights
Last updated: May 29, 2026
Application No. 18/254,625

SYSTEM AND METHODS FOR SEGMENTED FLOW ANALYSIS

Non-Final OA §102
Filed
May 26, 2023
Priority
Nov 30, 2020 — provisional 63/119,279 +1 more
Examiner
MASKELL, MICHAEL P
Art Unit
2878
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
924 granted / 1073 resolved
+18.1% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
10 currently pending
Career history
1083
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
66.5%
+26.5% vs TC avg
§102
24.8%
-15.2% vs TC avg
§112
2.6%
-37.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1073 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 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. Claim(s) 1-4, 6-8, 12-19, and 22 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kennedy, et al (U.S. Patent Application Publication 2021/0153143 A1). Regarding claims 1 and 27, Kennedy discloses a system for loading sample into a segmented flow, the system comprising: A transport capillary having an open end for receiving at least one liquid sample and a segmenting liquid (Fig. 1); A droplet dispenser (Fig. 1 – Fluidic Coupling Union) for separately dispensing the at least one liquid sample and the segmenting liquid to the open end, wherein the at least one liquid sample and the segmenting liquid are alternately dispensed into the open end as discrete droplets (1-D segmented sample array); and A conduit fluidly connected to the transport capillary (Fig. 1 – Connection Tube) connected to the transport capillary that provides a capture liquid to the open end of the transport capillary (paragraph 0062). Regarding claim 2, Kennedy discloses wherein the segmenting liquid is immiscible with the at least one liquid sample and the capture liquid (paragraph 0041). Regarding claim 3, Kennedy discloses wherein the segmenting liquid is perfluorodecalin (paragraph 0075). Regarding claim 4, Kennedy discloses wherein the droplet dispenser is selected from the group consisting of an acoustic droplet ejector, a gravity dispense, a mechanical drive, an electrostatic dispenser, a piezoelectric dispenser, and a pneumatic dispenser (claim 20). Regarding claim 6, Kennedy discloses wherein the capture liquid is methanol (paragraph 0062). Regarding claim 7, Kennedy discloses an ionization source (Fig. 1 – spray emitter nozzle) that ionizes the at least one liquid sample carried in the transport capillary. Regarding claim 8, Kennedy discloses the system further comprising a mass spectrometer (paragraph 0009). Claims 12-17 are drawn to the method of using the system of claims 1-7 and the same rejections apply mutatis mutandis. Regarding claim 18, Kennedy discloses wherein the ionizing comprises electrospray ionization (Fig. 1). Claim 19 is drawn to the method of using the system of claim 8, and the same rejection applies mutatis mutandis. Regarding claim 22, Kennedy discloses adjusting the volume of the capture liquid to control dispersion and dilution of the first liquid sample travelling through the transport capillary (paragraph 0031). Allowable Subject Matter Claims 5, 11, 20 and 21 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Regarding claim 5, Kennedy recites several types of droplet dispenser, but an acoustic droplet ejector is not one of them. Regarding claim 11, Kennedy teaches the opposite of the claimed configuration, and it would appear that the system would not function if turned upside down as claimed. Regarding claims 20 and 21, Kennedy fails to teach treating the transport capillary with a dynamic or permanent coating comprising a wetting agent on the interior surface of the transport capillary. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL P MASKELL whose telephone number is (571)270-3210. The examiner can normally be reached M-F 10A-6P. 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, Georgia Epps can be reached at 571-272-2328. 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 MASKELL/Primary Examiner, Art Unit 2878 05 March 2026
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Prosecution Timeline

May 26, 2023
Application Filed
Mar 09, 2026
Non-Final Rejection mailed — §102 (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

1-2
Expected OA Rounds
86%
Grant Probability
95%
With Interview (+9.2%)
2y 1m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1073 resolved cases by this examiner. Grant probability derived from career allowance rate.

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