Prosecution Insights
Last updated: July 17, 2026
Application No. 18/818,236

LAMINATED SUBSTRATE, LIQUID DISCHARGE HEAD, AND METHOD FOR MANUFACTURING LAMINATED SUBSTRATE

Non-Final OA §102
Filed
Aug 28, 2024
Priority
Aug 30, 2023 — JP 2023-140399
Examiner
FIDLER, SHELBY LEE
Art Unit
2853
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Canon Inc.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
894 granted / 1132 resolved
+11.0% vs TC avg
Moderate +14% lift
Without
With
+14.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
33 currently pending
Career history
1163
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
75.2%
+35.2% vs TC avg
§102
10.5%
-29.5% vs TC avg
§112
4.7%
-35.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1132 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 . Election/Restrictions Claims 9-15 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected Group II, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 5/15/2026. Information Disclosure Statement The information disclosure statement (IDS) submitted on 2/4/2026, 8/28/2025, 8/28/2024 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-8 is/are rejected under 35 U.S.C. 102(a)(1/2) as being anticipated by Luginbuhl et al. (US 6523762 B1). Regarding claim 1: Luginbuhl discloses a laminated substrate comprising: a silicon substrate (1); and a silicon compound film (any of 2, 3, or 12) stacked on the silicon substrate (Fig. 1), wherein the silicon compound film has a through hole (Fig. 1), wherein the silicon substrate has a hole (Fig. 1) communicating with the through hole (Fig. 1), and wherein either a diameter of the hole is smaller at least at a portion in a depth direction of the hold than a diameter of the through hole on a surface in contact with the silicon substrate, or a cross sectional area of the hole is smaller at least at a portion in a depth direction of the hole than a cross sectional area of the through hole on a surface in contact with the silicon substrate (Fig. 1). Regarding claim 2: Luginbuhl discloses all the limitations of claim 1, and also that the hole is a through hole penetrating the silicon substrate (Fig. 2). Regarding claim 3: Luginbuhl discloses all the limitations of claim 1, and also that the silicon compound film contains one or more of SiO, SiO2, Si3N4, SiN, SiC, SiON, SiOC, SiCN, and SiOCN (col. 2, lines 1-5). Regarding claim 4: Luginbuhl discloses all the limitations of claim 1, and also that the silicon compound film is a silicon oxide film (col. 2, lines 1-5). Regarding claim 5: Luginbuhl discloses all the limitations of claim 1, and also that the diameter of the hole is smaller over an entire area in the depth direction of the hole than the diameter of the through hole on the surface in contact with the silicon substrate (at least when the silicon substrate “hole” is the hole corresponding to nozzle 22: Fig. 1). Regarding claim 6: Luginbuhl discloses all the limitations of claim 1, and also that the diameter of the hole is smaller at a portion in the depth direction of the hole than the diameter of the through hole on the surface in contact with the silicon substrate (at least when the silicon substrate “hole” is the hole corresponding to the entire depth of the silicon substrate: Fig. 1). Regarding claim 7: Luginbuhl discloses all the limitations of claim 1, and also that a cross-sectional area of the hole is smaller at least at a portion in a depth direction of the hole than a cross-sectional area of the through hole on a surface in contact with the silicon substrate (Fig. 1). Regarding claim 8: Luginbuhl discloses a liquid discharge head comprising: a silicon substrate (1); and a silicon compound film (any of 2, 3, or 12) stacked on the silicon substrate (Fig. 1), wherein the silicon compound film has a through hole (Fig. 1), wherein the silicon substrate has a hole (Fig. 1) communicating with the through hole (Fig. 1), and wherein either a diameter of the hole is smaller at least at a portion in a depth direction of the hold than a diameter of the through hole on a surface in contact with the silicon substrate, or a cross sectional area of the hole is smaller at least at a portion in a depth direction of the hole than a cross sectional area of the through hole on a surface in contact with the silicon substrate (Fig. 1). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: The following prior art reference (not exhaustive) represent known relative laminated substrates: US 2013/0244352 A1 disclose a silicon substrate (13) having a hole (12) and a silicon compound film (51) having a through hole (83); US 2020/0122465 A1 disclose a silicon substrate (1) having a hole (13) and a silicon compound film (15) having a through hole (12); US 2019/0270307 A1 disclose a silicon substrate (25/21) having a hole (47/26) and a silicon compound film (30) having a through hole (71/26); and US 2020/0215819 A1 disclose a silicon substrate (51) having a hole (512) and a silicon compound film (52,53) having a through hole (Fig. 8). Communication with the USPTO Any inquiry concerning this communication or earlier communications from the examiner should be directed to Shelby L Fidler whose telephone number is (571)272-8455. The examiner can normally be reached Monday-Friday, 8:30am - 5pm 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, 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. SHELBY L. FIDLER Primary Examiner Art Unit 2853 /SHELBY L FIDLER/Primary Examiner, Art Unit 2853
Read full office action

Prosecution Timeline

Aug 28, 2024
Application Filed
Jun 10, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679103
LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS
2y 6m to grant Granted Jul 14, 2026
Patent 12679086
LIQUID EJECTION HEAD
2y 6m to grant Granted Jul 14, 2026
Patent 12679121
PRINTING APPARATUS
2y 5m to grant Granted Jul 14, 2026
Patent 12679104
LIQUID EJECTION APPARATUS AND CONTROL METHOD FOR LIQUID EJECTION APPARATUS
2y 9m to grant Granted Jul 14, 2026
Patent 12673489
DRIVER CIRCUIT FOR A PRINTHEAD
3y 0m to grant Granted Jul 07, 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
79%
Grant Probability
93%
With Interview (+14.4%)
2y 2m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1132 resolved cases by this examiner. Grant probability derived from career allowance rate.

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