Prosecution Insights
Last updated: April 19, 2026
Application No. 18/771,524

LIQUID STORAGE CONTAINER AND LIQUID EJECTION APPARATUS

Non-Final OA §102§103
Filed
Jul 12, 2024
Examiner
MCMILLION, TRACEY M
Art Unit
2853
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Kabushiki Kaisha
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
90%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
545 granted / 623 resolved
+19.5% vs TC avg
Minimal +2% lift
Without
With
+2.4%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
34 currently pending
Career history
657
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
56.2%
+16.2% vs TC avg
§102
25.9%
-14.1% vs TC avg
§112
14.7%
-25.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 623 resolved cases

Office Action

§102 §103
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 Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. 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 and 3-6 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Asai (US 2006/0132563). With regard to claim 1, Asai discloses a liquid storage container (10A) [ink cartridge; Para. 0020], comprising: a plurality of liquid storage portions (13A to 13D) [ink reservoirs; Para. 0021] that store liquids; and a plurality of outlets (not labeled) [nozzles; Para. 0023; Fig. 1B] through which the liquids are dispensed out of the plurality of liquid storage portions, respectively [Fig. 1B], wherein on a first surface of the plurality of liquid storage portions including a connection surface connected with the outlets of the liquid storage portions, A/B > 1 is satisfied where an array pitch between midpoints of points where a center line, which is passing through centers of adjacent outlets, intersects sections of the liquid storage portions is A, and an array pitch between the adjacent outlets is B. PNG media_image1.png 604 616 media_image1.png Greyscale With regard to claim 3, wherein the plurality of liquid storage portions are in a rectangular form [Fig. 1A]. With regard to claim 4, wherein the plurality of liquid storage portions are in the form of a fan [Fig. 1B shows a box fan configuration]. With regard to claim 5, wherein a partition wall is formed between the plurality of outlets, and the partition wall is higher than a height of the plurality of outlets [Fig. 1A]. With regard to claim 6, wherein a member (12) [Fig. 1A] that defines how the plurality of outlets are arranged. Claim Rejections - 35 USC § 103 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. Claim(s) 2 is rejected under 35 U.S.C. 103 as being unpatentable over Asai (US 2006/0132563). With regard to claim 2, Asai discloses all the limitations of claim 1 but does not explicitly disclose wherein A/B <2 is satisfied with a relationship of the array pitch A and the array pitch B. However, Asai teaches the dimensions in height (h), width (w) and depth (d) of the ink reservoirs are not identical [Para. 0034]. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to satisfy the A/B < 2 with a relationship of the array pitch A and the array pitch B, since the dimensions (h, w, d), as taught by Asai, can be modified and such modification would have involved a mere change in the size of a component. A change in size is generally recognized as being within the level of ordinary skill in the art. In re Rose, 105 USPQ 237 (CCPA 195) Allowable Subject Matter Claim 7 is 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. Claim 7 is objected to because the prior art does not teach or make obvious “wherein in a case of refiling the plurality of liquid tanks, the liquid storage container refills the liquid tanks with a plurality of liquids by gas-liquid exchange.” Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Nagaoka (US 2022/0267059) discloses a liquid ejection apparatus (1), comprising a plurality of liquid tanks (12a to 12d); a liquid storage container (2); a liquid ejection head (14) connected to the plurality of liquid of tanks and the tanks are refilled with a plurality of liquids by gas-liquid exchange. The liquid storage container has a single liquid storage portion with a single outlet through which liquid is dispensed and so is not the liquid storage container according to claim 1. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TRACEY M MCMILLION whose telephone number is (571)270-5193. The examiner can normally be reached Monday-Friday 6AM-2:30PM EST. 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, Ricardo Magallanes can be reached at 571-272-5960. 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. /TRACEY M MCMILLION/Examiner, Art Unit 2853 /RICARDO I MAGALLANES/Supervisor Patent Examiner, Art Unit 2853
Read full office action

Prosecution Timeline

Jul 12, 2024
Application Filed
Jan 08, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Mar 17, 2026
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
88%
Grant Probability
90%
With Interview (+2.4%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 623 resolved cases by this examiner. Grant probability derived from career allow rate.

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