Prosecution Insights
Last updated: July 17, 2026
Application No. 18/473,052

LIQUID CONTAINER AND PRINTING APPARATUS

Non-Final OA §103
Filed
Sep 22, 2023
Priority
Oct 12, 2022 — JP 2022-164270
Examiner
VO, ANH T N
Art Unit
2853
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Inc.
OA Round
4 (Non-Final)
90%
Grant Probability
Favorable
4-5
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allowance Rate
1364 granted / 1516 resolved
+22.0% vs TC avg
Minimal +5% lift
Without
With
+4.6%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
14 currently pending
Career history
1525
Total Applications
across all art units

Statute-Specific Performance

§103
62.0%
+22.0% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
2.5%
-37.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1516 resolved cases

Office Action

§103
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 . Non-Final Rejection 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 June 17, 2026 has been entered. The applicant’s amendment of 05/20/2026 necessitated a new ground of rejection as follows below: Claim Rejections Claim Rejections - 35 USC § 103 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 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-16, and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Hayashi et al. (JP 2020189454) in view of Zheng (CN 221693493). Hayashi et al. disclose in Figures 1-14 printer unit comprising: Regarding claim 1, a main body (131) including a storage chamber (154) configured to store liquid (Figure 6); and a nozzle (161) projecting from the main body (131), the nozzle (161) including an edge face (179) at a leading edge thereof (Figure 7), wherein the liquid container (130) is configured to provide the liquid (ink) for use in a printing apparatus (10) while being tilted such that the edge face (179) faces downward in a direction of gravity, and wherein, when the liquid container (130) is tilted such that the edge face (179) faces downward in the direction of gravity (Figures 4 and 15). Hayashi et al. do not disclose three or more openings that is formed on the edge face, and, three or more flow paths formed in the nozzle, each of the three or more flow paths bringing the storage chamber into communication with an outside through a corresponding one of the three or more openings, wherein each of the three or more flow paths is configured to enable an outflow of liquid from the storage chamber to the outside and an inflow of air from the outside into the storage chamber through a corresponding opening, whether each of the three or more flow paths functions as a liquid outflow path or as an air inflow path is determined based on relative positions of the openings corresponding to the respective flow paths in the direction of gravity. However, Zheng discloses in Figures 1-6 a liquid container comprising: three or more openings (30) those are formed on the edge face (unmarked edge face that contain numbers 2, 3, and 20, see Figure 6) and three or more flow paths (3) formed in the nozzle (2), each of the three or more flow paths (3) bringing the storage chamber (1) into communication with an outside through a corresponding one of the three or more openings (30) (Figures 1 and 5), wherein each of the three or more flow paths (3) is configured to enable an outflow of liquid from the storage chamber (1) to the outside and an inflow of air from the outside into the storage chamber (1) through a corresponding opening (20), whether each of the three or more flow paths (3) functions as a liquid outflow path (3) or as an air inflow path (4) is determined based on relative positions of the openings (30) corresponding to the respective flow paths (3) in the direction of gravity downward in the direction of gravity (Figures 1 and 5-6, see claim 10). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 2, Zheng teaches: wherein the three or more flow paths (3) include a first flow path (3), a second flow path (3), and a third flow path (3), and, wherein, as viewed in a direction perpendicular to the edge face (unmarked edge face that contain numbers 2, 3, and 20, see Figure 6), the opening corresponding to the third flow path (3) is not located on a line connecting the centroid of the opening corresponding to the first flow path and the centroid of the opening corresponding to the second flow path (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 3, Zheng teaches: wherein the three or more flow paths (6 flow paths) include a first flow path (3), a second flow path (3), and a third flow path (3), and a distance from the centroid of the opening corresponding to the first flow path (3) to the centroid of the second opening corresponding to the second flow path (3), a distance from the centroid of the second opening corresponding to the second flow path (3) to the centroid of the opening corresponding to the third flow path (3), and a distance from the centroid of the opening corresponding to the third flow path (3) to the centroid of the opening corresponding to the first flow path (3) are equal to each other (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 4, Zheng teaches: wherein the three or more flow paths (6 flow paths) include a first flow path (3), a second flow path (3, and a third flow path (3), and the centroid of the opening corresponding to the first flow path, the centroid of the opening corresponding to the second flow path, and the centroid of the opening corresponding to the third flow path are at an equal distance from a centroid (20) of the edge face ((Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 5, Zheng teaches: wherein the three or more flow paths (6 flow paths) include a first flow path (3), a second flow path (3), and a third flow path (3), and a position of a centroid of a triangle formed by connecting the centroid of the opening corresponding to the first flow path (3), the centroid of the opening corresponding to the second flow path (3), and the centroid of the opening corresponding to the third flow path (3) coincides with a position of a centroid (20) of the edge face (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 6, Zheng teaches: wherein the three or more flow paths (6 flow paths) include a first flow path (3), a second flow path (3), and a third flow path (3), and the opening corresponding to the first flow path (3), the opening corresponding to the second flow path (3), and the opening corresponding to the third flow path (3) are circular. (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 7, Zheng teaches: wherein the main body has a cylindrical shape, and the edge face is circular (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 8, Zheng teaches: wherein the three or more flow paths (3) include a first flow path (3), a second flow path (3), a third flow path (3), and a fourth flow path (3), and wherein, as viewed in a direction perpendicular to the edge face, a centroid of an opening corresponding to the fourth flow path (3) is not located on a line connecting the centroid of the opening corresponding to the first flow path (3) and the centroid of the opening corresponding to the second flow path (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 9, Zheng teaches: wherein, as viewed in a direction perpendicular to the edge face, the opening (3) corresponding to the fourth flow path (3) is not located on the line connecting the centroid of the opening corresponding to the first flow path (3) and the centroid of the opening corresponding to the second flow path (3) (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 10, Zheng teaches: the centroid of the opening corresponding to the second flow path (3), a distance from the centroid of the second opening corresponding to the second flow path (3) to the centroid of the opening corresponding to the third flow path (3), a distance from the centroid of the opening corresponding to the third flow path (3) to the centroid of the fourth opening corresponding to the fourth flow path (3), and a distance from the centroid of the opening corresponding to the fourth flow path (3) to the centroid of the opening corresponding to the first flow path is equal to each other. (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 11, Zheng teaches: wherein the centroid of the opening corresponding to the first flow path (3), the centroid of the opening corresponding to the second flow path (3), the centroid of the opening corresponding to the third flow path (3), and the centroid of the opening corresponding to the fourth flow path (4) are at an equal distance from a centroid of the edge face. (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 12, Zheng teaches: wherein the opening corresponding to the fourth flow path is circular. (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 13, Zheng teaches: wherein a position of a centroid of a rectangle formed by connecting the centroid of the opening corresponding to the first flow path (3), the centroid of the opening corresponding to the second flow path (3), the centroid of the opening corresponding to the third flow path (3), and the centroid of the opening corresponding to the fourth flow path (3) coincides with a position of a centroid of the edge face. (Figures 1 and 5-6). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 14, Hayashi et al. disclose in Figures 1-14 printer unit comprising: a liquid container (130) comprising a main body (131) including a storage chamber (154) configured to store liquid and a nozzle (161) projecting from the main body (131), the nozzle (161) including an edge face (179) at a leading edge thereof (Figures 5 and 7), a print head (24) configured to eject liquid to perform printing (Figure 2); a liquid tank (100) connectable to the liquid container (130) (Figure 4); and a tube (32) capable of supplying liquid from the liquid tank (100) to the print head (24) (Figures 2 and 4), wherein the liquid container (130) is configured to inject the liquid into the liquid tank (100) by connecting the nozzle (161) to the liquid tank (100) while the liquid container (130) is tilted such that the edge face (179) faces downward in the direction of gravity (Figure 4), and wherein, when the liquid container (130) is tilted such that the edge face (179) faces downward in the direction of gravity (Figure 4). Hayashi et al. do not disclose three or more openings those are formed on the edge face, and three or more flow paths formed in the nozzle, each of the three or more flow paths bringing the storage chamber into communication with an outside through a corresponding one of the three or more openings; and whether each of the three or more flow paths functions as a liquid outflow path or as an air inflow path is determined based on relative positions of the openings corresponding to the respective flow paths in the direction of gravity. However, Zheng discloses in Figures 1-6 a liquid container comprising: three or more openings (130) formed on the edge face (unmarked edge face that contain numbers 2, 3, and 20, see Figure 6), and three or more flow paths (3) formed in the nozzle (2), each of the three or more flow paths (3) bringing the storage chamber (154) into communication with an outside through a corresponding one of the three or more openings (30) (Figures 1 and 5); whether each of the three or more flow paths (3) functions as a liquid outflow path (3) or as an air inflow path (4) is determined based on relative positions of the openings (130) corresponding to the respective flow paths (3) in the direction of gravity (Figures 1-5); Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate the teaching of Zheng in the Hayashi et al.'s printer unit for the purpose of replenishing a liquid to a liquid tank. Regarding claim 15, Hayashi et al disclose: liquid tank (100) includes an inclined wall (106) inclined with respect to a planar direction and a perpendicular direction, and an insertion slot portion (112) into which the nozzle (20) can be inserted is formed on the inclined wall (112) (Figures 3-4). Regarding claim 16, Hayashi et al. disclose: wherein the liquid tank (100) comprises an air communication port )98) through which an inside of the liquid tank (100) is communicated with air. Regarding claim 18, Regarding claim 15, Hayashi et al. disclose: wherein the liquid container (130) is configured to inject liquid into a liquid tank (100), by connecting the nozzle (161) to the liquid tank (100) while the liquid container (130) is tilted such that the edge face (179) faces downward in a direction of gravity (Figure 4). Response to Applicant’s Arguments The applicant’s arguments with respect to the prior art rejection have been carefully considered and have been traversed in view of the new grounds of rejection over Hayashi et al reference. CONCLUSION Any inquiry concerning this communication or earlier communications from the examiner should be directed to Examiner Anh Vo whose telephone number is (571) 272-2262. The examiner can normally be reached on Monday to Friday from 9:30 A.M.to 6:00 P.M.. If attempts to reach the examiner by telephone are unsuccessful, the examiner'ssupervisor, Douglas Rodriguez can be reached on (571) 431-0716. The fax phonenumber 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 thePatent Application Information Retrieval (PAIR) system. Status information forpublished 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 http://pair-direct.uspto.gov. Shouldyou have questions on access to the Private PAIR system, contact the ElectronicBusiness Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from aUSPTO Customer Service Representative or access to the automated informationsystem, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ANH T VO/ Primary Examiner, Art Unit 2853
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Prosecution Timeline

Show 2 earlier events
Sep 03, 2025
Response Filed
Sep 19, 2025
Non-Final Rejection mailed — §103
Dec 19, 2025
Response Filed
Feb 20, 2026
Final Rejection mailed — §103
May 20, 2026
Response after Non-Final Action
Jun 17, 2026
Request for Continued Examination
Jun 23, 2026
Response after Non-Final Action
Jul 01, 2026
Non-Final Rejection mailed — §103 (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

4-5
Expected OA Rounds
90%
Grant Probability
95%
With Interview (+4.6%)
2y 0m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1516 resolved cases by this examiner. Grant probability derived from career allowance rate.

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