Prosecution Insights
Last updated: April 19, 2026
Application No. 18/901,319

SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS

Final Rejection §102
Filed
Sep 30, 2024
Examiner
GONZALEZ, LUIS A
Art Unit
3653
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Canon Kabushiki Kaisha
OA Round
2 (Final)
85%
Grant Probability
Favorable
3-4
OA Rounds
2y 4m
To Grant
89%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
885 granted / 1044 resolved
+32.8% vs TC avg
Minimal +5% lift
Without
With
+4.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
34 currently pending
Career history
1078
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
40.1%
+0.1% vs TC avg
§102
38.6%
-1.4% vs TC avg
§112
19.6%
-20.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1044 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 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 19 and 21 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Morimoto JP 2007-197112 (hereinafter “Morimoto”). Morimoto discloses a sheet stacking apparatus (1), comprising: a conveyance path (15, or pathway to staple handling part 9) through which a sheet is to be conveyed; a guide (upper and lower guide plates of 15, or belts of 9, or 17) which forms a part of the conveyance path and is movable to a closed position (FIG. 1) in which the guide guides the sheet and to an open position (retracted state of FIG. 2) in which the guide opens the conveyance path; and a trolley (5, 51, 52, 12) which is movable away from the guide, wherein an operation of moving the guide from the closed position to the open position is regulated by the trolley, and wherein in a case in which the trolley is moved away from the guide, the guide is allowed (capable of) to be moved from the closed position to the open position. Regarding claim 21, further comprising: a stack tray (43) on which the sheet conveyed through the conveyance path is stacked; and a raising and lowering portion (44, and mechanism to allow for vertical displacement of 43) configured to raise and lower the stack tray, wherein the stack tray is loaded on the trolley by the raising and lowering portion (refer to FIG. 3). Allowable Subject Matter Claims 1-18 and 20 are allowed. The following is a statement of reasons for the indication of allowable subject matter: Claims 1-18 and 20 are allowable because no prior art was found to teach or suggest the relationship of a trolley, a lock member, a guide as claimed. Response to Arguments Applicant’s arguments with respect to claims 19 and 21 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument (a new interpretation of the Morimoto reference is introduced). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LUIS A GONZALEZ whose telephone number is (571)270-3094. The examiner can normally be reached 9am-5:30pm. 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, Michael McCullough can be reached at 571-272-7805. 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. /LUIS A GONZALEZ/ Primary Examiner, Art Unit 3653
Read full office action

Prosecution Timeline

Sep 30, 2024
Application Filed
Sep 29, 2025
Non-Final Rejection — §102
Feb 02, 2026
Response Filed
Mar 19, 2026
Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600592
MEDIUM EJECTION APPARATUS INCLUDING EJECTION TRAY FORMED WITH RECESSED PART AND BEAM PART
2y 5m to grant Granted Apr 14, 2026
Patent 12600587
MEDIUM FEED APPARATUS TO ADVANCE SUCCEEDING SHEET OF MEDIUM WHEN PRECEDING SHEET OF MEDIUM PASSES PICK ROLLER
2y 5m to grant Granted Apr 14, 2026
Patent 12583143
SHEET PROCESSING MACHINE
2y 5m to grant Granted Mar 24, 2026
Patent 12577002
GRASPING SYSTEM AND METHOD FOR INSERTING SEPARATION SHEETS IN A RECEPTACLE
2y 5m to grant Granted Mar 17, 2026
Patent 12577077
SHEET REMOVER, CONVEYING DEVICE, AND IMAGE FORMING APPARATUS
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

3-4
Expected OA Rounds
85%
Grant Probability
89%
With Interview (+4.6%)
2y 4m
Median Time to Grant
Moderate
PTA Risk
Based on 1044 resolved cases by this examiner. Grant probability derived from career allow rate.

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