Prosecution Insights
Last updated: October 02, 2026
Application No. 19/090,855

VALVE MECHANISM, LIQUID FLUID DEVICE, AND LIQUID EJECTION DEVICE

Non-Final OA §102
Filed
Mar 26, 2025
Priority
Mar 27, 2024 — JP 2024-051312 +3 more
Examiner
LEGESSE, HENOK D
Art Unit
Tech Center
Assignee
Seiko Epson Corporation
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
949 granted / 1098 resolved
+26.4% vs TC avg
Minimal +2% lift
Without
With
+2.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
20 currently pending
Career history
1102
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
42.4%
+2.4% vs TC avg
§102
31.5%
-8.5% vs TC avg
§112
14.8%
-25.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1098 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 . Priority Acknowledgment is made of applicant's claim for foreign priority based on an application filed in the IDS on 03/26/2025. It is noted, however, that applicant has not filed a certified copy of the JP 2024-091546 application as required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement (IDS) submitted on 03/26/2025 is being considered by the examiner. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 1-12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hoshina (JP 2012086535). Regarding claim 1, Hoshina teaches a valve mechanism (figs.2,3,6) comprising: an upstream chamber (“upstream chamber” in figure below, fig.3, corresponding to the upper chamber 22a in fig.2) into which fluid flows via an inflow port (80 fig.2); a downstream chamber (“downstream chamber” in figure below, fig.3, corresponding to the upper chamber 22a in fig.2) that has a first flexible membrane (36 fig.3) and that is in communication with the upstream chamber via a communication port (23 fig.3) downstream of the upstream chamber (“upstream chamber” in figure below, fig.3); a second flexible membrane (35 and/or 27 figs.3,6) that partitions the upstream chamber and the downstream chamber from each other; an open and close section (26,25, and/or 32 figs.3,6) configured to open and close the communication port; and a biasing section (“spring” in figure below, fig.3) that biases the first flexible membrane (36) in a direction of increasing volume of the downstream chamber, wherein the open and close section (26,25, and/or 32 figs.3,6) includes a shaft section (25 figs.3,6) that is provided across the upstream chamber (“upstream chamber” in figure below, fig.3) and the downstream chamber (“downstream chamber”) and that is configured to move following displacement of the first flexible membrane (36 fig.3) and the second flexible membrane (35 and/or 27 figs.3,6) and a valve section (26,and/or 32 figs.3,6) that is connected to the shaft section (25) and that opens and closes the communication port (23). PNG media_image1.png 780 674 media_image1.png Greyscale Regarding claim 2, Hoshina teaches a valve mechanism (figs.2,3,6) comprising: an upstream chamber (“upstream chamber” in figure below, fig.3, corresponding to the bottom chamber 22b in fig.2) that has a first flexible membrane (36 fig.3) and into which a fluid flows via an inflow port (81 fig.2); a downstream chamber (“downstream chamber” in figure below, fig.3, corresponding to the bottom chamber 22b in fig.2) that is in communication with the upstream chamber via a communication port (23 fig.3) downstream of the upstream chamber; a second flexible membrane (35 and/or 27 figs.3,6) that partitions the upstream chamber and the downstream chamber from each other; an open and close section (26,25, and/or 32 figs.3,6) configured to open and close the communication port; and a biasing section (“spring” in figure below, fig.3) that biases the first flexible membrane (36) in a direction of decreasing volume of the upstream chamber, wherein the open and close section (26,25, and/or 32 figs.3,6) includes a shaft section (25 figs.3,6) that is provided across the upstream chamber and the downstream chamber and that is configured to move following displacement of the first flexible membrane (36) and the second flexible membrane (35 and/or 27 figs.3,6) and a valve section (26,and/or 32 figs.3,6) that is connected to the shaft section (25) and that opens and closes the communication port (23). PNG media_image2.png 780 674 media_image2.png Greyscale Regarding claim 3, Hoshina further teaches wherein the shaft section (25 figs.3,6) is inserted into the second flexible membrane (35 and/or 27 figs.3,6), one end of the shaft section (25 figs.3,6) is connected to the first flexible membrane (36), and an other end of the shaft section (25) is connected to the valve section (26,and/or 32 figs.3,6). Regarding claim 4, Hoshina further teaches wherein the valve section (26,and/or 32 figs.3,6) has a seal section (portion of 27) configured to intimately contact the communication port. Regarding claim 5, Hoshina further teaches wherein a bending amount of the first flexible membrane (36 fig.3) when the open and close section is in a closed state is smaller than a bending amount of the first flexible membrane when the open and close section is in an open state (figs.6) and a bending amount of the second flexible membrane (35 and/or 27 figs.3,6) when the open and close section is in the closed state is smaller than a bending amount of the second flexible membrane when the open and close section is in the open state (figs.6). Regarding claim 6, Hoshina further teaches wherein a pressure receiving area of the second flexible membrane (35 and/or 27 figs.3,6) and a pressure receiving area of the valve section (26, and/or 32 figs.3,6) are the same. Regarding claim 7, Hoshina further teaches a liquid fluid device (figs.1,4) comprising: a liquid storage section (6 fig.1) configured to store liquid; a liquid flow path (34 fig.1) coupled to the liquid storage section; a pressure varying mechanism (fig.2) configured to vary the pressure of liquid flowing through the liquid flow path; and the valve mechanism (figs.3,6) according to claim 1. Regarding claim 8, Hoshina further teaches a liquid fluid device (figs.1,4) comprising: a liquid storage section (6 fig.1) configured to store liquid; a liquid flow path (34 fig.1) coupled to the liquid storage section; a pressure varying mechanism (fig.2) configured to vary the pressure of liquid flowing through the liquid flow path; and the valve mechanism (figs.3,6) according to claim 2. Regarding claim 9, Hoshina further teaches wherein the valve mechanism (figs.2,3,6) is provided in the liquid flow path (figs.1,2). Regarding claim 10, Hoshina further teaches wherein the valve mechanism (figs.2,3,6) is configured to adjust pressure of the liquid storage section (6 figs.1,2). Regarding claim 11, Hoshina further teaches further comprising: a second valve mechanism (valve mechanism corresponding to the bottom chamber 22b in fig.2), wherein, assuming that the valve mechanism (figs.2,3,6) is a first valve mechanism, the inflow port (80 fig.2) is a first inflow port, the upstream chamber (“upstream chamber” in figure above in claim 1, fig.3, corresponding to the upper chamber 22a in fig.2) is a first upstream chamber, the first communication port (23 fig.3, corresponding to the upper chamber 22a in fig.2) is a first communication port, the downstream chamber (“downstream chamber” in figure above in claim 1, fig.3, corresponding to the upper chamber 22a in fig.2) is a first downstream chamber, the first open and close section (26,25, and/or 32 figs.3,6, corresponding to the upper chamber 22a in fig.2) is a first open and close section, the biasing portion (“spring” in figure below, fig.3, corresponding to the upper chamber 22a in fig.2) is a first biasing section, the shaft section (25 figs.3,6) is a first shaft section, and the valve section (26, and/or 32 figs.3,6) is a first valve section, the second valve mechanism (valve mechanism corresponding to the bottom chamber 22b in fig.2) includes a second upstream chamber (“upstream chamber” in figure above in claim 2, fig.3, corresponding to the bottom chamber 22b in fig.2) that includes a third flexible membrane (36 fig.3) and into which fluid flows via a second inflow port (81 fig.2), a second downstream chamber (“downstream chamber” in figure above in claim 2, fig.3, corresponding to the bottom chamber 22b in fig.2) that is in communication with the second upstream chamber via a second communication port (23 fig.3, corresponding to the bottom chamber 22b in fig.2) downstream of the second upstream chamber, a fourth flexible membrane (35 and/or 27 figs.3,6 corresponding to the bottom chamber 22b in fig.2) that partitions the second upstream chamber and the second downstream chamber from each other, a second open and close section (26,25, and/or 32 figs.3,6 corresponding to the bottom chamber 22b in fig.2) configured to open and close the second communication port, and a second biasing section (“spring” in figure below, fig.3 in figure above in claim 2, fig.3, corresponding to the bottom chamber 22b in fig.2) that biases the third flexible membrane in a direction of decreasing volume of the second upstream chamber and the second open and close section (26,25, and/or 32 figs.3,6 corresponding to the bottom chamber 22b in fig.2) includes a second shaft section (25 figs.3,6 corresponding to the bottom chamber 22b in fig.2) that is provided across the second upstream chamber and the second downstream chamber and that is configured to move following displacement of the third flexible membrane and the fourth flexible membrane and a second valve section (26, and/or 32 figs.3,6 corresponding to the bottom chamber 22b in fig.2) that is connected to the second shaft section and that opens and closes the second communication port. Regarding claim 12, Hoshina further teaches a liquid ejection device (figs.1,4) comprising: the liquid fluid device (figs.1,4) according to claim 7 and a liquid ejection section (3 figs.1,4) configured to eject liquid. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HENOK D LEGESSE whose telephone number is (571)270-1615. The examiner can normally be reached General Schedule 9:00 am- 5:00 pm, IFP. 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, Douglas Rodriguez can be reached at (571)431-0716. 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. /HENOK D LEGESSE/Primary Examiner, Art Unit 2853
Read full office action

Prosecution Timeline

Mar 26, 2025
Application Filed
Sep 17, 2026
Non-Final Rejection mailed — §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

1-2
Expected OA Rounds
86%
Grant Probability
89%
With Interview (+2.2%)
2y 1m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1098 resolved cases by this examiner. Grant probability derived from career allowance rate.

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